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000
FXUS66 KPDT 262309 CCA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 262309 CCA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 262309 CCA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 262309 CCA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 262217 AAA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 262217 AAA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 262217 AAA
AFDPDT

FXUS66 KPDT DDHHMM
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
317 PM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD

&&

.AVIATION...0Z TAFS...MID/HIGH CLOUDS WILL MOVE NORTH THIS EVENING
IN CENTRAL OR/WA WITH BKN-OVC CIGS MAINLY AOA 8 KFT AGL. CU NEAR
KPDT/KALW WILL DECREASE THIS EVENING. ALL AREAS CLOUDS WILL DECREASE
AFTER 15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE
PERIOD.  76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 262111
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
211 PM PDT SUN APR 26 2015

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.



.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD


&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 262111
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
211 PM PDT SUN APR 26 2015

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...HIGH PRESSURE WILL
CONTINUE BUILDING OVER THE REGION WITH A WARM FRONT MOVING UP THE
COAST. THIS COULD BRING SOME LIGHT RAIN TO THE CASCADE CREST
OVERNIGHT BUT THE REST OF THE FORECAST AREA WILL REMAIN DRY. THE
HIGH PRESSURE WILL BOOST TEMPERATURES MONDAY 10 TO 15 DEGREES OVER
SUNDAYS HIGH TEMPERATURES. WARM TEMPERATURES WILL CONTINUE INTO
TUESDAY BUT EXPECT A COLD FRONT TO SWEEP THROUGH THE REGION IN THE
AFTERNOON AND EVENING PERIOD. THIS WILL USHER IN SOME BREEZY WEST
WINDS AND SOME LOW END CHANCE OF PRECIPITATION TUESDAY NIGHT
ASSOCIATED WITH THE FRONTAL PASSAGE. TEMPERATURES DROP AROUND 10
DEGREES WEDNESDAY WITH A COOLER BUT MOSTLY DRY WESTERLY FLOW OVER
THE FORECAST AREA.



.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS LOW...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS BEEN POOR. MODELS HAVE SHOWN AN OVERALL
PROGRESSIVE PATTERN IN RECENT RUNS BUT DETAILS HAVE VARIED AS IS
COMMON IN A PROGRESSIVE PATTERN. AN UPPER LEVEL TROUGH WILL MOVE
THROUGH THE AREA WEDNESDAY NIGHT AND THURSDAY BRINGING SHOWERS...
MAINLY IN THE MOUNTAINS. A FEW SHOWERS AND BREEZY WINDS MAY LINGER
FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY NIGHT THROUGH SUNDAY AS
AN UPPER LEVEL RIDGE BUILDS OFFSHORE. DUE TO LOW CONFIDENCE IN
TIMING OF A FEW WEAK DISTURBANCES THAT WILL MOVE THROUGH THE
RIDGE...I LEFT A FEW SHOWERS IN THE MOUNTAINS SINCE DAYTIME HEATING
AND OROGRAPHIC LIFT IN WESTERLY FLOW CAN TRIGGER SHOWERS WITH THESE
DISTURBANCES.  COONFIELD


&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  70  46  73 /   0   0   0   0
ALW  41  74  51  77 /   0   0   0   0
PSC  38  75  45  79 /   0   0   0   0
YKM  37  73  45  76 /  10   0   0   0
HRI  39  75  43  77 /   0   0   0   0
ELN  35  73  42  73 /  10   0   0   0
RDM  30  76  39  70 /   0   0   0   0
LGD  35  69  42  77 /   0   0   0   0
GCD  34  74  42  80 /   0   0   0   0
DLS  40  79  46  73 /  10   0   0  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 261710 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1010 AM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.

&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76

&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 261710 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1010 AM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.

&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76

&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 261710 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1010 AM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.

&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76

&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 261710 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1010 AM PDT SUN APR 26 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.

&&

.AVIATION...18Z TAFS... CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY 6-10 KFT AGL. CLOUDS WILL DECREASE AFTER
15Z TOMORROW. WINDS WILL BE LESS THAN 10 KNOTS THROUGH THE PERIOD.
76

&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 261524
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
823 AM PDT SUN APR 26 2015

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.


&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER


AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 261524
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
823 AM PDT SUN APR 26 2015

.SHORT TERM...TODAY THROUGH MONDAY...RIDGE OF HIGH PRESSURE WILL BE
BUILDING INTO THE REGION FROM THE WEST. THERE WILL BE SOME MOISTURE
MOVING OVER THE RIDGE WHICH WILL BRING SOME CLOUDS TO THE FORECAST
AREA BUT ANY PRECIPITATION WILL BE LIMITED TO THE CASCADE CREST.
TEMPERATURES WILL BEGIN WARMING OVER THE NEXT COUPLE OF DAYS. NO
FREEZE WARNING EXPECTED OR NEEDED FOR TONIGHT.


&&

.PREV DISCUSSION... /ISSUED 415 AM PDT SUN APR 26 2015...UPDATED/

SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER


AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  38  70  45 /   0   0   0   0
ALW  62  42  74  50 /   0   0   0   0
PSC  65  40  75  46 /   0   0   0   0
YKM  65  39  73  45 /   0  10  10   0
HRI  65  38  75  45 /   0   0   0   0
ELN  64  37  73  42 /   0  10  10   0
RDM  62  32  76  38 /   0   0   0   0
LGD  59  34  69  43 /   0   0   0   0
GCD  61  35  74  42 /   0   0   0   0
DLS  68  41  79  47 /   0  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 261113 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT SUN APR 26 2015...UPDATED

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 261113 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT SUN APR 26 2015...UPDATED

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 261113 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT SUN APR 26 2015...UPDATED

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 261113 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT SUN APR 26 2015...UPDATED

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  CLOUDS WILL INCREASE AS THE DAY PROGRESSES
WITH BKN-OVC CIGS MAINLY AOA 8,000 FEET AGL. WINDS WILL BE LESS THAN
15 KNOTS THROUGH THE PERIOD.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 260935
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
235 AM PDT SUN APR 26 2015

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  VFR CONDITIONS WILL PREVAIL WITH VARYING MID
AND HIGH LEVEL CLOUDS...MAINLY AOA 10,000 FEET AGL.  WINDS WILL BE
LESS THAN 15 KNOTS THROUGH THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 260935
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
235 AM PDT SUN APR 26 2015

.SHORT TERM...TODAY THROUGH TUESDAY...A NORTHWEST FLOW WILL EXIST
OVER THE REGION THIS MORNING AHEAD OF BUILDING UPPER RIDGE THAT IS
STILL OFF THE COAST. SKIES HAVE BECOME MOSTLY CLEAR WITH LIGHT WINDS
AND STRONG RADIATIONAL COOLING. SOME LOCATIONS WILL HAVE NEAR OR
BELOW FREEZING TEMPERATURES THIS MORNING...NAMELY THE YAKIMA AND
KITTITAS VALLEYS AS WELL AS NORTH CENTRAL OREGON. THESE AREAS HAVE A
FREEZE WARNING THIS MORNING UNTIL 9 AM. TODAY THE UPPER RIDGE OFF
THE COAST WILL BUILD INTO THE PACIFIC NORTHWEST CAUSING A WARMING
TREND TO TAKE PLACE BEGINNING TODAY AND CONTINUING FOR THE NEXT FEW
DAYS. MAXIMUM TEMPERATURE READINGS TODAY WILL BE IN THE 50S AND 60S
IN THE LOWER ELEVATIONS WHICH WILL WARM TO THE MID AND UPPER 70S BY
TUESDAY. SOME AREAS ON TUESDAY COULD APPROACH 80 DEGREES IN THE
LOWER ELEVATIONS. WINDS WILL GENERALLY BE LIGHT TODAY AND MONDAY BUT
THEY WILL INCREASE FROM THE WEST ON TUESDAY...ESPECIALLY IN THE
KITTITAS VALLEY AND THE EASTERN COLUMBIA RIVER GORGE AS THE NEXT
COLD FRONT APPROACHES THE CWA FROM THE WEST. 88

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY.  OVERALL CONFIDENCE IN
THE EXTENDED FORECAST IS FAIR...AS RUN-TO-RUN CONTINUITY OF THE
DETERMINISTIC MODELS HAS A LOT TO BE DESIRED.  WINDS ON TUESDAY
NIGHT THROUGH WEDNESDAY WILL LIKELY BE 15-30 MPH FOR MOST OF THE
AREA...AND IT`S POSSIBLE THAT WIND ADVISORIES MAY BE NEEDED FOR THE
KITTITAS VALLEY AND THE GRANDE RONDE VALLEY.  MODELS IN GENERAL
AGREEMENT THAT AN UPPER LEVEL TROUGH WILL POSITION OVER WA/OR
WEDNESDAY FOR COOLER AND UNSTABLE CONDITIONS.  PER DISCUSSION WITH
SURROUNDING OFFICES...I WILL HOLD OFF MENTIONING THUNDERSTORMS FOR
THE CASCADES BUT A SLIGHT CHANCE MAY NEED TO BE ADDED IF MODELS
CONTINUE TO ADVERTISE THE COLD UPPER LOW SIMILAR TO THE LATEST RUNS.
AFTER THE PASSAGE OF THE UPPER LEVEL TROUGH...THE FORECAST AREA WILL
BE INFLUENCED BY A W-NW FLOW ALOFT AND SEVERAL EMBEDDED WAVES.
EXPECT OCCASIONAL SHOWERS...MAINLY OVER THE MOUNTAINS...AND
OCCASIONALLY BREEZY WINDS.  WISTER

&&

.AVIATION...12Z TAFS.  VFR CONDITIONS WILL PREVAIL WITH VARYING MID
AND HIGH LEVEL CLOUDS...MAINLY AOA 10,000 FEET AGL.  WINDS WILL BE
LESS THAN 15 KNOTS THROUGH THE PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  58  39  68  45 /   0   0   0   0
ALW  61  43  71  50 /   0   0   0   0
PSC  64  41  73  46 /   0   0   0   0
YKM  63  40  71  45 /   0   0  10   0
HRI  63  39  73  45 /   0   0   0   0
ELN  63  38  71  42 /   0  10  10   0
RDM  61  32  75  38 /   0   0   0   0
LGD  56  36  67  43 /   0   0   0   0
GCD  58  36  73  42 /   0   0   0   0
DLS  67  42  77  47 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR ORZ510.

WA...FREEZE WARNING UNTIL 9 AM PDT THIS MORNING FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 260538 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1035 PM PDT SAT APR 25 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL SLOWLY MOVE AWAY FROM THE
AREA OVERNIGHT. MEANWHILE ISOLD SHOWERS PERSIST ACROSS THE REGION
BUT WITH CLEARING SKIES LATER TONIGHT ESPECIALLY OVER THE WESTERN
ZONES TEMPERATURES ARE EXPECTED TO FALL BELOW FREEZING BY SUNDAY
MORNING OVER THIS AREA WHICH PROMPTED A FREEZE WARNING. OTHERWISE
MINOR ADJUSTMENTS WERE DONE TO THE SKY COVER AND THE PRESENT SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

.AVIATION...MAINLY VFR CONDITIONS WILL PERSIST ACROSS ALL TAF SITES
INTO SUNDAY AFTERNOON WHEN LCL MVFR CEILINGS ARE POSSIBLE AFTER 20Z.

&&

.PREV DISCUSSION... /ISSUED 332 PM PDT SAT APR 25 2015/

SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  20   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  10   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  10   0  10  10
RDM  24  63  33  77 /  10   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  10  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97





000
FXUS66 KPDT 260538 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1035 PM PDT SAT APR 25 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL SLOWLY MOVE AWAY FROM THE
AREA OVERNIGHT. MEANWHILE ISOLD SHOWERS PERSIST ACROSS THE REGION
BUT WITH CLEARING SKIES LATER TONIGHT ESPECIALLY OVER THE WESTERN
ZONES TEMPERATURES ARE EXPECTED TO FALL BELOW FREEZING BY SUNDAY
MORNING OVER THIS AREA WHICH PROMPTED A FREEZE WARNING. OTHERWISE
MINOR ADJUSTMENTS WERE DONE TO THE SKY COVER AND THE PRESENT SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

.AVIATION...MAINLY VFR CONDITIONS WILL PERSIST ACROSS ALL TAF SITES
INTO SUNDAY AFTERNOON WHEN LCL MVFR CEILINGS ARE POSSIBLE AFTER 20Z.

&&

.PREV DISCUSSION... /ISSUED 332 PM PDT SAT APR 25 2015/

SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  20   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  10   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  10   0  10  10
RDM  24  63  33  77 /  10   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  10  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97




000
FXUS66 KPDT 260423 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
915 PM PDT SAT APR 25 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL SLOWLY MOVE AWAY FROM THE
AREA OVERNIGHT. MEANWHILE ISOLD SHOWERS PERSIST ACROSS THE REGION
BUT WITH CLEARING SKIES LATER TONIGHT ESPECIALLY OVER THE WESTERN
ZONES TEMPERATURES ARE EXPECTED TO FALL BELOW FREEZING BY SUNDAY
MORNING OVER THIS AREA WHICH PROMPTED A FREEZE WARNING. OTHERWISE
MINOR ADJUSTMENTS WERE DONE TO THE SKY COVER AND THE PRESENT SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 332 PM PDT SAT APR 25 2015/

SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

AVIATION...0Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR UNTIL
03Z DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED THIS EVENING...
HEN CLEARING WITH VARIABLE HIGH CLOUD INCREASING TOMORROW. WINDS
WILL GENERALLY BE 10-20 KNOTS THIS EVENING...DECREASING TO 0-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  20   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  10   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  10   0  10  10
RDM  24  63  33  77 /  10   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  10  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97





000
FXUS66 KPDT 260423 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
915 PM PDT SAT APR 25 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL SLOWLY MOVE AWAY FROM THE
AREA OVERNIGHT. MEANWHILE ISOLD SHOWERS PERSIST ACROSS THE REGION
BUT WITH CLEARING SKIES LATER TONIGHT ESPECIALLY OVER THE WESTERN
ZONES TEMPERATURES ARE EXPECTED TO FALL BELOW FREEZING BY SUNDAY
MORNING OVER THIS AREA WHICH PROMPTED A FREEZE WARNING. OTHERWISE
MINOR ADJUSTMENTS WERE DONE TO THE SKY COVER AND THE PRESENT SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 332 PM PDT SAT APR 25 2015/

SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

AVIATION...0Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR UNTIL
03Z DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED THIS EVENING...
HEN CLEARING WITH VARIABLE HIGH CLOUD INCREASING TOMORROW. WINDS
WILL GENERALLY BE 10-20 KNOTS THIS EVENING...DECREASING TO 0-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  20   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  10   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  10   0  10  10
RDM  24  63  33  77 /  10   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  10  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97




000
FXUS66 KPDT 252233 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
332 PM PDT SAT APR 25 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

&&

.AVIATION...0Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR UNTIL
03Z DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED THIS EVENING...
HEN CLEARING WITH VARIABLE HIGH CLOUD INCREASING TOMORROW. WINDS
WILL GENERALLY BE 10-20 KNOTS THIS EVENING...DECREASING TO 0-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  30   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  20   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  20   0  10  10
RDM  24  63  33  77 /  20   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  20  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 252233 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
332 PM PDT SAT APR 25 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.

.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD

&&

.AVIATION...0Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR UNTIL
03Z DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED THIS EVENING...
HEN CLEARING WITH VARIABLE HIGH CLOUD INCREASING TOMORROW. WINDS
WILL GENERALLY BE 10-20 KNOTS THIS EVENING...DECREASING TO 0-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  30   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  20   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  20   0  10  10
RDM  24  63  33  77 /  20   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  20  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 252121
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PDT SAT APR 25 2015

.SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.




.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD


&&

.AVIATION...18Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 10-20 KNOTS THIS AFTERNOON DECREASING TO 2-8 KNOTS
OVERNIGHT. COONFIELD


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  30   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  20   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  20   0  10  10
RDM  24  63  33  77 /  20   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  20  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 252121
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PDT SAT APR 25 2015

.SHORT TERM...TONIGHT THROUGH TUESDAY...AN UPPER LEVEL TROUGH WILL
CONTINUE SLOWLY MOVING ACROSS THE FORECAST AREA THIS AFTERNOON AND
OVERNIGHT. SHOWERS WILL CONTINUE THROUGH THE EVENING WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN SOME AREAS BUT OVERALL ACTIVITY WILL
BEGIN TO DECREASE RAPIDLY AFTER SUNSET. EXPECT CLEARING SKIES
OVERNIGHT WHICH WILL ALLOW FOR SOME COLD TEMPERATURES AND POSSIBLE
FREEZING TEMPERATURES IN SOME AREAS WHERE GROWING SEASON IS
UNDERWAY. THUS A FREEZE WARNING HAS BEEN ISSUED FOR SOME ZONES.

RIDGE OF HIGH PRESSURE WILL COMMENCE BUILDING OVER THE REGION SUNDAY
AND MONDAY BRINGING BACK A SPRING WARMING TREND. TEMPERATURES WILL
CLIMB BACK INTO THE 60S AND 70S BY MONDAY. THE RIDGE WILL BEGIN
SHIFTING EAST ON TUESDAY ALLOWING A WEAK FRONT TO ARRIVE LATE
TUESDAY. THIS WILL BE ACCOMPANIED BY INCREASING WESTERLY WINDS AND
TEMPERATURES STARTING TO COOL.




.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A FAST MOVING UPPER
LEVEL DISTURBANCE WILL MOVE ACROSS EASTERN WASHINGTON AND OREGON
TUESDAY NIGHT. MOISTURE IS LIMITED AND POPS WILL BE LOW. IT WILL BE
WINDY IN SOME AREAS LATE TUESDAY...PARTICULARLY THE COLUMBIA RIVER
GORGE AND  KITTITAS VALLEY. A STRONGER TROUGH WILL MOVE INTO THE
AREA WEDNESDAY NIGHT AND THURSDAY BRINGING MORE SHOWERS. A FEW
SHOWERS MAY LINGER FRIDAY. DRIER CONDITIONS WILL DEVELOP FRIDAY
NIGHT AND SATURDAY AS A TRANSITORY RIDGE MOVES OVER WASHINGTON AND
OREGON. MODELS HAVE SHOWN AN OVERALL PROGRESSIVE PATTERN IN RECENT
RUNS BUT DETAILS HAVE VARIED AS IS COMMON IN A PROGRESSIVE PATTERN.
THEREFORE I HAVE LOWER CONFIDENCE IN TIMING THAN NORMAL.  COONFIELD


&&

.AVIATION...18Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 10-20 KNOTS THIS AFTERNOON DECREASING TO 2-8 KNOTS
OVERNIGHT. COONFIELD


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  60  40  70 /  20   0   0   0
ALW  40  63  44  73 /  30   0   0   0
PSC  38  66  42  75 /  20   0   0   0
YKM  32  65  41  73 /  20   0   0  10
HRI  36  65  40  75 /  20   0   0   0
ELN  32  65  39  73 /  20   0  10  10
RDM  24  63  33  77 /  20   0   0   0
LGD  33  58  37  69 /  30   0   0   0
GCD  32  60  37  75 /  40   0   0   0
DLS  39  69  43  79 /  20  10  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 251743 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1040 AM PDT SAT APR 25 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT AND SUNDAY...THE UPPER LEVEL LOW STALLED OVER
VANCOUVER ISLAND IS ON THE MOVE DROPPING SOUTH AND SHIFTING TO THE
EAST OVER TIME. THIS WILL PLACE THE FORECAST AREA UNDER AN
INCREASINGLY UNSTABLE AIRMASS THROUGH THE DAY LEADING TO THE
DEVELOPMENT OF SHOWERS. COULD EVEN SEE SOME THUNDERSTORMS WITH THE
MOST LIKELY AREAS BEING OVER THE EASTERN MOUNTAINS AND ALONG THE
EAST SLOPES OF THE WASHINGTON CASCADES AND ADJACENT VALLEYS. THE LOW
WILL EXIT THE REGION TO THE EAST OVERNIGHT WITH SHOWERS COMING TO AN
END AFTER SUNSET. CLEARING SKIES WILL ALLOW OVERNIGHT TEMPERATURES
TO DROP INTO THE 20S AND 30S. HAVE ISSUED FREEZE WARNINGS FOR
LOCATIONS WHERE GROWING SEASON IS UNDERWAY AND TEMPERATURES ARE
EXPECTED TO BE NEAR FREEZING.

&&

.AVIATION...18Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 10-20 KNOTS THIS AFTERNOON DECREASING TO 2-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PREV DISCUSSION... /ISSUED 450 AM PDT SAT APR 25 2015/

..UPDATED AVIATION DISCUSSION...

SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  62  38  64  43 /  20  20   0   0
YKM  60  32  63  42 /  30  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  32  62  40 /  30  10   0  10
RDM  53  24  59  34 /  30  10  10   0
LGD  52  33  56  39 /  60  30  10   0
GCD  52  32  58  38 /  50  40  10   0
DLS  63  39  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 251743 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1040 AM PDT SAT APR 25 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT AND SUNDAY...THE UPPER LEVEL LOW STALLED OVER
VANCOUVER ISLAND IS ON THE MOVE DROPPING SOUTH AND SHIFTING TO THE
EAST OVER TIME. THIS WILL PLACE THE FORECAST AREA UNDER AN
INCREASINGLY UNSTABLE AIRMASS THROUGH THE DAY LEADING TO THE
DEVELOPMENT OF SHOWERS. COULD EVEN SEE SOME THUNDERSTORMS WITH THE
MOST LIKELY AREAS BEING OVER THE EASTERN MOUNTAINS AND ALONG THE
EAST SLOPES OF THE WASHINGTON CASCADES AND ADJACENT VALLEYS. THE LOW
WILL EXIT THE REGION TO THE EAST OVERNIGHT WITH SHOWERS COMING TO AN
END AFTER SUNSET. CLEARING SKIES WILL ALLOW OVERNIGHT TEMPERATURES
TO DROP INTO THE 20S AND 30S. HAVE ISSUED FREEZE WARNINGS FOR
LOCATIONS WHERE GROWING SEASON IS UNDERWAY AND TEMPERATURES ARE
EXPECTED TO BE NEAR FREEZING.

&&

.AVIATION...18Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 10-20 KNOTS THIS AFTERNOON DECREASING TO 2-8 KNOTS
OVERNIGHT. COONFIELD

&&

.PREV DISCUSSION... /ISSUED 450 AM PDT SAT APR 25 2015/

..UPDATED AVIATION DISCUSSION...

SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  62  38  64  43 /  20  20   0   0
YKM  60  32  63  42 /  30  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  32  62  40 /  30  10   0  10
RDM  53  24  59  34 /  30  10  10   0
LGD  52  33  56  39 /  60  30  10   0
GCD  52  32  58  38 /  50  40  10   0
DLS  63  39  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 251537
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
835 AM PDT SAT APR 25 2015

.SHORT TERM...TONIGHT AND SUNDAY...THE UPPER LEVEL LOW STALLED OVER
VANCOUVER ISLAND IS ON THE MOVE DROPPING SOUTH AND SHIFTING TO THE
EAST OVER TIME. THIS WILL PLACE THE FORECAST AREA UNDER AN
INCREASINGLY UNSTABLE AIRMASS THROUGH THE DAY LEADING TO THE
DEVELOPMENT OF SHOWERS. COULD EVEN SEE SOME THUNDERSTORMS WITH THE
MOST LIKELY AREAS BEING OVER THE EASTERN MOUNTAINS AND ALONG THE
EAST SLOPES OF THE WASHINGTON CASCADES AND ADJACENT VALLEYS. THE LOW
WILL EXIT THE REGION TO THE EAST OVERNIGHT WITH SHOWERS COMING TO AN
END AFTER SUNSET. CLEARING SKIES WILL ALLOW OVERNIGHT TEMPERATURES
TO DROP INTO THE 20S AND 30S. HAVE ISSUED FREEZE WARNINGS FOR
LOCATIONS WHERE GROWING SEASON IS UNDERWAY AND TEMPERATURES ARE
EXPECTED TO BE NEAR FREEZING.

&&

.PREV DISCUSSION... /ISSUED 450 AM PDT SAT APR 25 2015/

..UPDATED AVIATION DISCUSSION...

SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 5-15 KNOTS THIS MORNING INCREASING TO 10-20 KNOTS THIS
AFTERNOON AND EVENING.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  62  38  64  43 /  20  20   0   0
YKM  60  32  63  42 /  30  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  32  62  40 /  30  10   0  10
RDM  53  24  59  34 /  30  10  10   0
LGD  52  33  56  39 /  60  30  10   0
GCD  52  32  58  38 /  50  40  10   0
DLS  63  39  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76





000
FXUS66 KPDT 251537
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
835 AM PDT SAT APR 25 2015

.SHORT TERM...TONIGHT AND SUNDAY...THE UPPER LEVEL LOW STALLED OVER
VANCOUVER ISLAND IS ON THE MOVE DROPPING SOUTH AND SHIFTING TO THE
EAST OVER TIME. THIS WILL PLACE THE FORECAST AREA UNDER AN
INCREASINGLY UNSTABLE AIRMASS THROUGH THE DAY LEADING TO THE
DEVELOPMENT OF SHOWERS. COULD EVEN SEE SOME THUNDERSTORMS WITH THE
MOST LIKELY AREAS BEING OVER THE EASTERN MOUNTAINS AND ALONG THE
EAST SLOPES OF THE WASHINGTON CASCADES AND ADJACENT VALLEYS. THE LOW
WILL EXIT THE REGION TO THE EAST OVERNIGHT WITH SHOWERS COMING TO AN
END AFTER SUNSET. CLEARING SKIES WILL ALLOW OVERNIGHT TEMPERATURES
TO DROP INTO THE 20S AND 30S. HAVE ISSUED FREEZE WARNINGS FOR
LOCATIONS WHERE GROWING SEASON IS UNDERWAY AND TEMPERATURES ARE
EXPECTED TO BE NEAR FREEZING.

&&

.PREV DISCUSSION... /ISSUED 450 AM PDT SAT APR 25 2015/

..UPDATED AVIATION DISCUSSION...

SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 5-15 KNOTS THIS MORNING INCREASING TO 10-20 KNOTS THIS
AFTERNOON AND EVENING.  WISTER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  62  38  64  43 /  20  20   0   0
YKM  60  32  63  42 /  30  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  32  62  40 /  30  10   0  10
RDM  53  24  59  34 /  30  10  10   0
LGD  52  33  56  39 /  60  30  10   0
GCD  52  32  58  38 /  50  40  10   0
DLS  63  39  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR ORZ510.

WA...FREEZE WARNING FROM 2 AM TO 9 AM PDT SUNDAY FOR WAZ026-027.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/76/76




000
FXUS66 KPDT 251146 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
450 AM PDT SAT APR 25 2015

...UPDATED AVIATION DISCUSSION...

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 5-15 KNOTS THIS MORNING INCREASING TO 10-20 KNOTS THIS
AFTERNOON AND EVENING.  WISTER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 251146 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
450 AM PDT SAT APR 25 2015

...UPDATED AVIATION DISCUSSION...

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24
HOURS BUT THERE MAY BE BRIEF PERIODS WHEN CIGS LOWER TO MVFR TODAY
DUE TO SCATTERED SHOWERS. MID AND HIGH LEVEL CLOUDS WITH VARYING
BASES BETWEEN 3500-15000 FEET AGL CAN BE EXPECTED.  WINDS WILL
GENERALLY BE 5-15 KNOTS THIS MORNING INCREASING TO 10-20 KNOTS THIS
AFTERNOON AND EVENING.  WISTER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 250927
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 250927
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 250927
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 250926
AFDPDT

ZCZC WRKAFDPDT ALL
TTAA00 KWRK 250918

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 250926
AFDPDT

ZCZC WRKAFDPDT ALL
TTAA00 KWRK 250918

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 250926
AFDPDT

ZCZC WRKAFDPDT ALL
TTAA00 KWRK 250918

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85




000
FXUS66 KPDT 250926
AFDPDT

ZCZC WRKAFDPDT ALL
TTAA00 KWRK 250918

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT SAT APR 25 2015

.SHORT TERM...TODAY THROUGH MONDAY...AN UPPER LOW PRESSURE SYSTEM
WILL MOVE ACROSS THE REGION TODAY THROUGH THIS EVENING. THE LOW
LEVEL FLOW WILL START OUT EARLY IN THE DAY AS AN UNSTABLE SOUTHWEST
FLOW. THIS WILL HELP TO TRANSPORT MOISTURE AND INSTABILITY INTO THE
FORECAST AREA. HOWEVER...THE LOW LEVEL FLOW IS FORECAST TO BECOME
NORTHWEST BY LATE AFTERNOON. THIS WILL BE A MORE STABLE AND COOLER
FLOW WHICH WILL ACT TO INHIBIT CONVECTION. IN ANY EVENT THE MODELS
ARE INDICATING A HEALTHY AMOUNT OF NEGATIVE LIFTED INDICES WITH SOME
CAPE THIS AFTERNOON OVER NORTHWEST PORTIONS OF THE CWA. STILL CANNOT
RULE OUT A THUNDERSTORM SO WILL KEEP A MENTION OF ISOLATED
THUNDERSTORMS THIS AFTERNOON IN THE NORTHWEST CORNER OF THE CWA
WHERE IT WILL BE MOST UNSTABLE. A NORTHERLY FLOW WILL MOVE INTO THE
REGION TONIGHT AS AN UPPER RIDGE DEVELOPS OFF THE COAST. THIS WILL
BRING DRIER AND MORE STABLE AIR INTO THE CWA. THE DEVELOPING UPPER
RIDGE OFF THE COAST IS EXPECTED TO MOVE INTO THE PACIFIC NORTHWEST
ON SUNDAY WITH A WARMING TREND BEGINNING. THE UPPER RIDGE WILL
STRENGTHEN ON MONDAY WITH SIGNIFICANTLY WARMER TEMPERATURES AND DRY
CONDITIONS EXPECTED. MAXIMUM TEMPERATURE READINGS IN THE LOWER
ELEVATIONS ARE EXPECTED TO ONLY BE IN THE 50S TO NEAR 60
TODAY...WARMING TO THE LOWER TO MID 70S BY MONDAY. THERE MAY BE SOME
LOCALLY BREEZY CONDITIONS AT TIMES...BUT MOST AREAS WILL JUST HAVE
LIGHT WINDS MAINLY LESS THAN 10-15 MPH. 88

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY.  A DEVELOPING UPPER TROUGH
OFFSHORE WILL FORCE THE HIGH PRESSURE RIDGE EASTWARD ON MONDAY NIGHT
AND TUESDAY...INCREASING A SW FLOW ALOFT.  THE UPPER TROUGH WILL
TRACK ACROSS WA/OR TUESDAY NIGHT.  THE GFS HAS A MORE DEFINED WAVE
EXTENDING SOUTH AS FAR AS SOUTHERN OREGON...WHILE THE ECMWF AND
CANADIAN KEEP MOST OF THE ENERGY NORTH AS A FAST MOVING SHORTWAVE
TROUGH. NEVERTHELESS...THE AMOUNT OF MOISTURE IS LIMITED AND POPS
WILL ONLY BE IN THE 20-30 PERCENT RANGE DURING THIS TIME.  IT WILL
BE WINDY IN SOME AREAS LATE TUESDAY...NAMELY THE EASTERN COLUMBIA
RIVER GORGE AND THE KITTITAS VALLEY.  A STRONGER TROUGH WILL FOLLOW
TO BRING SHOWERS TO THE REGION THE REMAINDER OF THE WORK WEEK.  ONCE
AGAIN...THE GFS IS STRONGER AND MORE ORGANIZED COMPARED TO THE
ECMWF/CANADIAN. THE PATTERN ADVERTISED BY THE GFS WOULD INDICATE A
POTENTIAL FOR THUNDERSTORMS ON THURSDAY.  WILL KEEP 20-40 PERCENT
CHANCE OF SHOWERS DURING THIS TIME AND HOLD OFF ON ANY MENTION OF
THUNDERSTORMS UNTIL THERE IS BETTER CONSISTENCY IN THE MODELS.
WISTER

&&

.AVIATION...(PREVIOUS DISCUSSION)....A LOW PRESSURE SYSTEM OVER THE
PACNW WILL BE SLOW TO MOVE ACROSS THE REGION THROUGH SATURDAY. THUS
LCL MVFR CEILINGS WILL PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24
HOURS WITH THE GREATEST CHANCES IN AND NEAR SHOWERS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  34  58  41 /  30  20   0   0
ALW  59  40  60  45 /  30  20   0   0
PSC  63  38  64  43 /  20  20   0   0
YKM  60  34  63  42 /  20  10  10  10
HRI  61  36  64  41 /  20  20   0   0
ELN  58  34  62  40 /  20  10   0  10
RDM  53  25  59  34 /  30  10  10   0
LGD  52  34  56  39 /  40  30  10   0
GCD  52  32  58  38 /  50  30  10   0
DLS  62  38  66  43 /  20  10  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/85/85





000
FXUS66 KPDT 250549 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1045 PM PDT FRI APR 24 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL KEEP THE CLOUDS AND A FEW
SHOWERS ACROSS THE AREA TONIGHT. THE OVERNIGHT FORECAST LOW TEMPS
REMAIN IN THE BALL PARK ALTHOUGH LOCATIONS IN THE EAST SUCH AS MEH
AND LGD WERE LOWERED A BIT. OTHERWISE THE REMAINDER OF THE SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

AVIATION...A LOW PRESSURE SYSTEM OVER THE PACNW WILL BE SLOW TO MOVE
ACROSS THE REGION THROUGH SATURDAY. THUS LCL MVFR CEILINGS WILL
PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24 HOURS WITH THE GREATEST
CHANCES IN AND NEAR SHOWERS.

&&

.PREV DISCUSSION... /ISSUED 421 PM PDT FRI APR 24 2015/

SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  33  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97





000
FXUS66 KPDT 250549 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1045 PM PDT FRI APR 24 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL KEEP THE CLOUDS AND A FEW
SHOWERS ACROSS THE AREA TONIGHT. THE OVERNIGHT FORECAST LOW TEMPS
REMAIN IN THE BALL PARK ALTHOUGH LOCATIONS IN THE EAST SUCH AS MEH
AND LGD WERE LOWERED A BIT. OTHERWISE THE REMAINDER OF THE SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

AVIATION...A LOW PRESSURE SYSTEM OVER THE PACNW WILL BE SLOW TO MOVE
ACROSS THE REGION THROUGH SATURDAY. THUS LCL MVFR CEILINGS WILL
PERSIST ACROSS ALL TAF SITES FOR THE NEXT 24 HOURS WITH THE GREATEST
CHANCES IN AND NEAR SHOWERS.

&&

.PREV DISCUSSION... /ISSUED 421 PM PDT FRI APR 24 2015/

SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  33  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97




000
FXUS66 KPDT 250422 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
920 PM PDT FRI APR 24 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL KEEP THE CLOUDS AND A FEW
SHOWERS ACROSS THE AREA TONIGHT. THE OVERNIGHT FORECAST LOW TEMPS
REMAIN IN THE BALL PARK ALTHOUGH LOCATIONS IN THE EAST SUCH AS MEH
AND LGD WERE LOWERED A BIT. OTHERWISE THE REMAINDER OF THE SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 421 PM PDT FRI APR 24 2015/

SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  33  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/




000
FXUS66 KPDT 250422 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
920 PM PDT FRI APR 24 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL KEEP THE CLOUDS AND A FEW
SHOWERS ACROSS THE AREA TONIGHT. THE OVERNIGHT FORECAST LOW TEMPS
REMAIN IN THE BALL PARK ALTHOUGH LOCATIONS IN THE EAST SUCH AS MEH
AND LGD WERE LOWERED A BIT. OTHERWISE THE REMAINDER OF THE SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 421 PM PDT FRI APR 24 2015/

SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  33  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/





000
FXUS66 KPDT 250422 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
920 PM PDT FRI APR 24 2015

.UPDATE...LOW PRESSURE OVER THE PACNW WILL KEEP THE CLOUDS AND A FEW
SHOWERS ACROSS THE AREA TONIGHT. THE OVERNIGHT FORECAST LOW TEMPS
REMAIN IN THE BALL PARK ALTHOUGH LOCATIONS IN THE EAST SUCH AS MEH
AND LGD WERE LOWERED A BIT. OTHERWISE THE REMAINDER OF THE SHORT
TERM FORECAST APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 421 PM PDT FRI APR 24 2015/

SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  33  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/




000
FXUS66 KPDT 242321 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
421 PM PDT FRI APR 24 2015

UPDATED FOR AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 242321 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
421 PM PDT FRI APR 24 2015

UPDATED FOR AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 242321 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
421 PM PDT FRI APR 24 2015

UPDATED FOR AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 242321 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
421 PM PDT FRI APR 24 2015

UPDATED FOR AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT ALL TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL CONTINUE THROUGH 04Z TODAY. SHOWER COVERAGE
WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS EXPECTED TO
BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL BE BREEZY
10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 242110
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
210 PM PDT FRI APR 24 2015

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...VFR CONDITIONS EXPECTED
OVER THE NEXT 24 HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF
SITES AS SHALLOW CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY
AROUND TAF SITES. SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE
MOUNTAINS. CIGS EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT.
WEST WINDS WILL BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES.
WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 242110
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
210 PM PDT FRI APR 24 2015

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...VFR CONDITIONS EXPECTED
OVER THE NEXT 24 HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF
SITES AS SHALLOW CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY
AROUND TAF SITES. SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE
MOUNTAINS. CIGS EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT.
WEST WINDS WILL BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES.
WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 242110
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
210 PM PDT FRI APR 24 2015

.SHORT TERM...TONIGHT THROUGH MONDAY...FORECAST AREA WILL BE UNDER A
TROUGH PATTERN FOR THE NEXT 24 TO 36 HOURS AS THE UPPER LEVEL LOW
CIRCULATING OVER VANCOUVER WILL SLOWLY DROP SOUTHEAST INTO THE
PACIFIC NORTHWEST OVERNIGHT AND SATURDAY. AS IT DOES THERE WILL BE
INCREASED ATMOSPHERIC INSTABILITY ESPECIALLY DURING PEAK HEATING ON
SATURDAY. THUS EXPECTING INCREASING SHOWERS THROUGH THE DAY AND EVEN
A FEW LIGHTNING STRIKES MAINLY ALONG THE EAST SLOPES OF THE
WASHINGTON CASCADES. THE TROUGH WILL EXIT SATURDAY NIGHT AS A RIDGE
OF HIGH PRESSURE BUILDS BACK INTO THE REGION FROM OFF THE PACIFIC
OCEAN. THIS WILL BEGIN A WARMING TREND SUNDAY AND MONDAY WITH
TEMPERATURES BACK IN THE 60S AND 70S BY MONDAY.

.LONG TERM...MONDAY NIGHT THROUGH THURSDAY NIGHT...HIGH PRESSURE
WILL CONTINUE TO DOMINATE THE AREA MONDAY NIGHT AND TUESDAY.
MINIMUM TEMPERATURES ON MONDAY NIGHT WILL BE QUITE MILD...IN THE MID
40S TO LOWER 50S...WITH UPPER 30S TO 40S MOUNTAINS.  BY TUESDAY
HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S...WITH UPPER 60S TO 70S
MOUNTAINS.  A FRONTAL SYSTEM IS EXPECTED TO MOVE THROUGH TUESDAY
EVENING. EXPECT WEST WINDS TO PICK UP WITH THIS COLD FRONT.  RIGHT
NOW THE FRONTAL SYSTEM LOOKS PRETTY DRY...JUST HAVE A CHANCE OF
PRECIPITATION ALONG THE EAST SLOPES OF THE CASCADES ON TUESDAY NIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE MOUNTAINS ON WEDNESDAY.
MODELS DIVERGE A BIT FROM THIS POINT ON...AS GFS BRINGS ANOTHER LOW
PRESSURE SYSTEM SOUTH OF OREGON...BUT WOULD SPIN UP MOISTURE TO
CENTRAL AND NORTHEAST OREGON...PROVIDING A DECENT CHANCE FOR
AFTERNOON THUNDERSTORMS ON THURSDAY.  ECMWF HAS MORE OF A DRY
SHORTWAVE PUSH ACROSS OREGON...LIMITING THE ACTIVITY TO SLIGHT
CHANCE OF MOUNTAIN SHWOERS...WITH VERY LOW CHANCE OF THUNDER.  WEBER


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...VFR CONDITIONS EXPECTED
OVER THE NEXT 24 HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF
SITES AS SHALLOW CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY
AROUND TAF SITES. SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE
MOUNTAINS. CIGS EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT.
WEST WINDS WILL BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES.
WEBER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  55  34  61 /  10  30  20   0
ALW  44  59  40  63 /  10  30  20   0
PSC  44  63  38  67 /  10  20  20   0
YKM  38  60  34  66 /  10  20  10  10
HRI  42  61  36  67 /  10  20  20   0
ELN  36  58  34  65 /  10  20  10   0
RDM  34  53  25  62 /  40  30  10  10
LGD  37  52  34  59 /  20  40  30  10
GCD  37  52  32  61 /  20  50  30  10
DLS  43  62  38  69 /  20  20  10  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 241711 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1011 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.

.AVIATION...18Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY AROUND TAF SITES.
SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS
EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL
BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 241711 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1011 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.

.AVIATION...18Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY AROUND TAF SITES.
SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS
EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL
BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 241711 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1011 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.

.AVIATION...18Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY AROUND TAF SITES.
SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS
EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL
BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 241711 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
1011 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.

.AVIATION...18Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS.  ON AND OFF VCSH CAN BE EXPECTED AT TAF SITES AS SHALLOW
CONVECTIVE SHOWERS WILL DEVELOP FROM 20Z-04Z TODAY AROUND TAF SITES.
SHOWER COVERAGE WILL BE MORE SCATTERED OVER THE MOUNTAINS. CIGS
EXPECTED TO BE SCT-BKN 4-8KFT AND BKN-OVC 10-15KFT. WEST WINDS WILL
BE BREEZY 10-15KTS...GUSTING AROUND 20KTS AT TIMES. WEBER

&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 241546
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
845 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.


&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.

AVIATION...12Z TAFS...VFR CONDITIONS TO PREVAIL AT ALL TAF SITES
WITH CIGS RISING ABV 10K.  DIURNAL WIND G15-25KTS 18-00Z. CIGS
LOWERING TO AROUND 5K AFTER 06Z.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89





000
FXUS66 KPDT 241546
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
845 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY AND TONIGHT...A CLOSED UPPER LEVEL LOW PRESSURE
SYSTEM CENTERED OVER VANCOUVER ISLAND THIS MORNING. THIS IS PLACING
THE FORECAST AREA UNDER A MOIST SOUTHWEST FLOW WITH SOME INCREASING
SHALLOW INSTABILITY THROUGH THE DAY LEADING TO SOME SHOWERS
DEVELOPING MAINLY OVER THE MOUNTAINOUS AREAS...ESPECIALLY ALONG AND
NEAR THE CASCADE CREST. HAVE UPDATED FORECAST TO EXPAND MORE SHOWER
COVERAGE OVER THE EASTERN MOUNTAINS FOR THIS AFTERNOON. OVERNIGHT
THE UPPER LEVEL LOW WILL BEGIN TO OPEN INTO A TROUGH AND START
SWINGING INTO THE PACIFIC NORTHWEST. THIS WILL LEAD TO MORE SHOWERS
OVERNIGHT AND INTO SATURDAY WITH SNOW LEVELS 2500 TO AROUND 4000
FEET.


&&

.PREV DISCUSSION... /ISSUED 300 AM PDT FRI APR 24 2015/

SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.

AVIATION...12Z TAFS...VFR CONDITIONS TO PREVAIL AT ALL TAF SITES
WITH CIGS RISING ABV 10K.  DIURNAL WIND G15-25KTS 18-00Z. CIGS
LOWERING TO AROUND 5K AFTER 06Z.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  57  41  54  33 /  10  10  30  20
ALW  59  44  55  38 /  10  10  40  30
PSC  63  44  59  37 /  10  10  20  20
YKM  60  38  57  33 /  20  10  20  10
HRI  61  42  57  36 /  10  10  20  20
ELN  57  36  56  33 /  20  10  20  10
RDM  53  34  51  26 /  20  40  30  10
LGD  54  37  50  33 /  10  20  50  30
GCD  53  37  50  32 /  20  20  40  30
DLS  61  43  59  38 /  20  20  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

91/89/89




000
FXUS66 KPDT 241002
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

.LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.

&&

.AVIATION...12Z TAFS...VFR CONDITIONS TO PREVAIL AT ALL TAF SITES
WITH CIGS RISING ABV 10K.  DIURNAL WIND G15-25KTS 18-00Z. CIGS
LOWERING TO AROUND 5K AFTER 06Z.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  54  33 /  10  20  30  20
ALW  57  39  55  38 /  10  20  40  30
PSC  61  39  59  37 /  10  20  20  20
YKM  58  34  57  33 /  10  20  20  10
HRI  59  37  57  36 /  10  20  20  20
ELN  55  32  56  33 /  10  20  20  10
RDM  51  27  51  26 /  10  30  30  10
LGD  53  32  50  33 /  10  20  50  30
GCD  52  32  50  32 /  10  20  40  30
DLS  59  39  59  38 /  10  30  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/79/79





000
FXUS66 KPDT 241002
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PDT FRI APR 24 2015

.SHORT TERM...TODAY THROUGH SUNDAY...A BROAD UPPER TROUGH WILL
CONTINUE TO MOVE INTO THE REGION AND FORECAST AREA TODAY. THE LOW
LEVEL FLOW WILL MAINLY BE FROM THE WEST WHICH WILL RESULT IN
DOWNSLOPE DRYING IN THE LOWER ELEVATIONS EAST OF THE CASCADES.
OTHERWISE THIS SYSTEM IS EXPECTED TO BRING SHOWERS TO THE CASCADES
AND THE EASTERN MOUNTAINS TODAY. A SOUTHWEST FLOW WILL DEVELOP BY
LATE TONIGHT WHICH WILL TRANSPORT A GREATER AMOUNT OF MOISTURE INTO
THE CWA LATE TONIGHT AND ON SATURDAY. A COLD POOL ALOFT WILL MOVE
OVER THE REGION HELPING TO DESTABILIZE THE ATMOSPHERE ON SATURDAY.
AS SUCH PRECIPITATION WILL BE CONVECTIVE...I.E. SHOWERY RATHER THAN
STRATIFORM. THE BEST CHANCE FOR SHOWERS WILL BE ON SATURDAY AND OVER
THE MOUNTAINS...THOUGH ALL AREAS OF THE CWA WILL HAVE AT LEAST A
SLIGHT CHANCE OF SHOWERS ON SATURDAY. THE LOW LEVEL FLOW WILL SHIFT
TO THE NORTHWEST BY SATURDAY AFTERNOON AS THE UPPER LOW/TROUGH AXIS
PASSES TO THE EAST. THIS WILL INHIBIT ANY THUNDERSTORMS IN THE CWA.
AS A RESULT LEFT OUT THE MENTION OF THUNDERSTORMS FOR SATURDAY IN
THE FORECAST. AN UPPER RIDGE WILL BUILD OFF THE COAST ON SUNDAY
MORNING WITH A NORTHERLY FLOW OVER THE CWA. HOWEVER THE RIDGE WILL
BUILD INTO THE PACIFIC NORTHWEST THROUGH THE DAY SUNDAY RESULTING IN
THE BEGINNING OF A WARMING AND DRYING TREND ON SUNDAY. WINDS WILL BE
MOSTLY LIGHT THROUGH THE SHORT TERM WITH ONLY ISOLATED LOCATIONS
HAVING BREEZY WINDS AT TIMES...MAINLY DURING THE AFTERNOONS. 88

.LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...GFS/CA/EC MODELS IN GOOD
AGREEMENT WITH RIDGE OVER THE AREA AND WARM DRY WEATHER THROUGH
TUESDAY.  EC/CA MODELS BRING SHORTWAVE TROFS THROUGH THE AREA
TUESDAY NIGHT AND WEDNESDAY...SO WILL KEEP A SMALL CHANCE FOR
SHOWERS MAINLY MOUNTAINS FOR THAT TIME PERIOD.  EC BRINGS ANOTHER
SHORTWAVE TROF ON THURSDAY WHILE GFS KEEP UPPER LOW OFFSHORE WITH
RESULTING SOUTHWEST FLOW OVER THE AREA.  SO KEEPING SMALL POPS WITH
LOW CONFIDENCE DUE TO DIVERGING MODEL SOLUTIONS.

&&

.AVIATION...12Z TAFS...VFR CONDITIONS TO PREVAIL AT ALL TAF SITES
WITH CIGS RISING ABV 10K.  DIURNAL WIND G15-25KTS 18-00Z. CIGS
LOWERING TO AROUND 5K AFTER 06Z.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  56  36  54  33 /  10  20  30  20
ALW  57  39  55  38 /  10  20  40  30
PSC  61  39  59  37 /  10  20  20  20
YKM  58  34  57  33 /  10  20  20  10
HRI  59  37  57  36 /  10  20  20  20
ELN  55  32  56  33 /  10  20  20  10
RDM  51  27  51  26 /  10  30  30  10
LGD  53  32  50  33 /  10  20  50  30
GCD  52  32  50  32 /  10  20  40  30
DLS  59  39  59  38 /  10  30  20  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.

&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

88/79/79




000
FXUS66 KPDT 240554 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1050 PM PDT THU APR 23 2015

UPDATED THE AVIATION DISCUSSION

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

.AVIATION...MVFR CEILINGS WILL PERSIST ACROSS TAF SITES KPDT AND
KALW WITH THE BEST CHANCES OF THIS OCCURING AT TAF SITE KDLS IN AND
NEAR SHOWERS. ELSEWHERE MAINLY VFR CONDITIONS CAN BE EXPECTED AND
THEN CLOUDS ARE FORECAST TO INCREASE IN COVERAGE WITH AREAS OF MVFR
CEILINGS LIKELY AFTER 15Z AT MOST TAF SITES. BRIEF WIND GUSTS TO 25
KTS ARE POSSIBLE AFTER 18Z BEFORE A RETURN TO MOSTLY VFR CONDITIONS
EXPECTED AFTER 23Z.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97





000
FXUS66 KPDT 240554 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1050 PM PDT THU APR 23 2015

UPDATED THE AVIATION DISCUSSION

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

.AVIATION...MVFR CEILINGS WILL PERSIST ACROSS TAF SITES KPDT AND
KALW WITH THE BEST CHANCES OF THIS OCCURING AT TAF SITE KDLS IN AND
NEAR SHOWERS. ELSEWHERE MAINLY VFR CONDITIONS CAN BE EXPECTED AND
THEN CLOUDS ARE FORECAST TO INCREASE IN COVERAGE WITH AREAS OF MVFR
CEILINGS LIKELY AFTER 15Z AT MOST TAF SITES. BRIEF WIND GUSTS TO 25
KTS ARE POSSIBLE AFTER 18Z BEFORE A RETURN TO MOSTLY VFR CONDITIONS
EXPECTED AFTER 23Z.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97




000
FXUS66 KPDT 240554 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1050 PM PDT THU APR 23 2015

UPDATED THE AVIATION DISCUSSION

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

.AVIATION...MVFR CEILINGS WILL PERSIST ACROSS TAF SITES KPDT AND
KALW WITH THE BEST CHANCES OF THIS OCCURING AT TAF SITE KDLS IN AND
NEAR SHOWERS. ELSEWHERE MAINLY VFR CONDITIONS CAN BE EXPECTED AND
THEN CLOUDS ARE FORECAST TO INCREASE IN COVERAGE WITH AREAS OF MVFR
CEILINGS LIKELY AFTER 15Z AT MOST TAF SITES. BRIEF WIND GUSTS TO 25
KTS ARE POSSIBLE AFTER 18Z BEFORE A RETURN TO MOSTLY VFR CONDITIONS
EXPECTED AFTER 23Z.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97





000
FXUS66 KPDT 240554 AAB
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1050 PM PDT THU APR 23 2015

UPDATED THE AVIATION DISCUSSION

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

.AVIATION...MVFR CEILINGS WILL PERSIST ACROSS TAF SITES KPDT AND
KALW WITH THE BEST CHANCES OF THIS OCCURING AT TAF SITE KDLS IN AND
NEAR SHOWERS. ELSEWHERE MAINLY VFR CONDITIONS CAN BE EXPECTED AND
THEN CLOUDS ARE FORECAST TO INCREASE IN COVERAGE WITH AREAS OF MVFR
CEILINGS LIKELY AFTER 15Z AT MOST TAF SITES. BRIEF WIND GUSTS TO 25
KTS ARE POSSIBLE AFTER 18Z BEFORE A RETURN TO MOSTLY VFR CONDITIONS
EXPECTED AFTER 23Z.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/97




000
FXUS66 KPDT 240331 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
825 PM PDT THU APR 23 2015

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED AT ALL TAF SITES
THROUGH THE PERIOD. CANNOT RULE OUT SOME BRIEF...LOCAL MVFR CIGS
OR VIS AT KBDN...KPDT OR KALW. AT KPDT AND KALW THE BEST CHANCE
FOR THIS TO OCCUR WOULD LIKELY BE BETWEEN 24/05-09Z. A WEATHER
SYSTEM IS MOVING THROUGH THE AREA THIS EVENING AND INTO THE EARLY
OVERNIGHT HOURS. CIGS WILL LOWER TO BETWEEN 3.5-8KFT AGL WITH SHOWERS
AT MOST TAF SITES MAINLY BEFORE 24/09Z. WESTERLY WINDS WILL ALSO BE
A BIT BREEZY THIS EVENING AND AGAIN STARTING AFTER 18-20Z FRIDAY....
MOST SITES WILL SEE WINDS BETWEEN 10-15 KT WITH GUSTS OF 15-25 KT
DURING THESE TIMES. WINDS ARE FORECAST TO DECREASE AND MAINLY FOLLOW
THE TYPICAL DIURNAL TRENDS AFTER 24/06-09Z. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/




000
FXUS66 KPDT 240331 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
825 PM PDT THU APR 23 2015

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED AT ALL TAF SITES
THROUGH THE PERIOD. CANNOT RULE OUT SOME BRIEF...LOCAL MVFR CIGS
OR VIS AT KBDN...KPDT OR KALW. AT KPDT AND KALW THE BEST CHANCE
FOR THIS TO OCCUR WOULD LIKELY BE BETWEEN 24/05-09Z. A WEATHER
SYSTEM IS MOVING THROUGH THE AREA THIS EVENING AND INTO THE EARLY
OVERNIGHT HOURS. CIGS WILL LOWER TO BETWEEN 3.5-8KFT AGL WITH SHOWERS
AT MOST TAF SITES MAINLY BEFORE 24/09Z. WESTERLY WINDS WILL ALSO BE
A BIT BREEZY THIS EVENING AND AGAIN STARTING AFTER 18-20Z FRIDAY....
MOST SITES WILL SEE WINDS BETWEEN 10-15 KT WITH GUSTS OF 15-25 KT
DURING THESE TIMES. WINDS ARE FORECAST TO DECREASE AND MAINLY FOLLOW
THE TYPICAL DIURNAL TRENDS AFTER 24/06-09Z. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/





000
FXUS66 KPDT 240331 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
825 PM PDT THU APR 23 2015

.UPDATE...THE LATEST IR SATL WAS SHOWING A LARGE AREA OF CLOUDS OVER
THE CENTRAL PORTIONS OF THE REGION AND THIS WILL CONTINUE MOVING TO
THE EAST TONIGHT. SOME SHOWERS WERE OVER PORTIONS OF THE TWO
STATE AREA AND THESE ARE FORECAST TO LINGER OVER THE EASTERN
MOUNTAINS AND OVER THE WA/OR CASCADES. ELSEWHERE A FEW SHOWERS WERE
ADDED TO THE SOUTHERN ZONES AS THE SYSTEM SLOWLY MOVES AWAY FROM
THIS AREA OVERNIGHT. OTHERWISE THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

&&

.PREV DISCUSSION... /ISSUED 443 PM PDT THU APR 23 2015/

SHORT TERM...TONIGHT THROUGH SUNDAY...A DISORGANIZED COLD FRONT IS
WILL MOVING INTO THE REGION THIS AFTERNOON WITH LOTS OF CLOUDS BUT
LIMITED PRECIPITATION. THE FRONT CURRENTLY EXTENDS FROM NORTHERN
IDAHO TO SOUTHWEST OREGON AND WILL BE SLOWLY MOVING OVER THE
FORECAST AREA OVERNIGHT AND EXITING BY EARLY FRIDAY. PRECIPITATION
AMOUNTS ARE EXPECTED TO BE LIGHT AND MAINLY OVER THE MOUNTAINS. THE
UPPER LEVEL LOW BEHIND THE FRONT WILL STALL OVER VANCOUVER ISLAND ON
FRIDAY KEEPING US IN A WESTERLY FLOW WITH SOME CLOUDS BUT LITTLE IF
ANY PRECIPITATION. THE LOW WILL OPEN UP INTO A TROUGH AND MOVE OVER
THE FORECAST AREA ON SATURDAY. THE INSTABILITY BROUGHT ABOUT BY THIS
WILL RESULT IN INCREASED SHOWER ACTIVITY ON SATURDAY. RIDGE OF HIGH
PRESSURE WILL REBUILD BEHIND THE DEPARTING TROUGH ON SUNDAY
PROVIDING THE BEGINNING OF A WARMING TREND THROUGH THE FIRST OF THE
WEEK.


LONG TERM...SUNDAY NIGHT THROUGH THURSDAY NIGHT...LEFT OVER
MOISTURE FROM AN ADVANCING WARM FRONT WILL BRING CHANCES FOR SHOWERS
MAINLY ALONG THE EAST SLOPES OF THE WASHINGTON CASCADES SUNDAY NIGHT
INTO MONDAY. OTHERWISE AN UPPER LEVEL RIDGE WILL BE BUILDING OVER
THE REGION FOR MONDAY AFTERNOON INTO TUESDAY. UNDER THIS RIDGE
EXPECT DRY AND MAINLY CLEAR CONDITIONS ALONG WITH TEMPERATURES
RISING TO 10-15 DEGREES ABOVE SEASONAL AVERAGES FOR DAYTIME HIGHS
EACH DAY. THE PROGRESSIVE PATTERN CONTINUES WITH ANOTHER WEATHER
SYSTEM MOVING INTO THE AREA TUESDAY NIGHT...THEN A BRIEF BREAK
WEDNESDAY BEFORE A LARGER AND STRONGER TROUGH/CLOSED LOW MOVES INTO
THE PAC NW TOWARD THE END OF THE LONG TERM PERIOD AND BEYOND. THESE
WEATHER SYSTEMS WILL BRING A CHANCE FOR SHOWERS...COOLER
TEMPERATURES (BACK NEAR AVERAGE)...LOWER SNOW LEVELS (DROPPING TO
4000-6000 FEET BY THURSDAY NIGHT) AND BREEZY CONDITIONS. AT THIS
TIME THE HIGHEST WINDS ARE PROGGED TO OCCUR TUESDAY AND THURSDAY
AFTERNOON/EVENING AS THE UPPER LOW AND FRONTAL BOUNDARIES MOVE
ONSHORE INTO THE AREA. THESE WILL BRING STRONGER MID LEVEL WINDS
OVER THE CWA WHICH COULD TRANSLATE DOWN TO THE SURFACE. THIS WILL BE
SOMETHING TO KEEP A CLOSE WATCH ON FOR FUTURE FORECAST UPDATES. 77

AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED AT ALL TAF SITES
THROUGH THE PERIOD. CANNOT RULE OUT SOME BRIEF...LOCAL MVFR CIGS
OR VIS AT KBDN...KPDT OR KALW. AT KPDT AND KALW THE BEST CHANCE
FOR THIS TO OCCUR WOULD LIKELY BE BETWEEN 24/05-09Z. A WEATHER
SYSTEM IS MOVING THROUGH THE AREA THIS EVENING AND INTO THE EARLY
OVERNIGHT HOURS. CIGS WILL LOWER TO BETWEEN 3.5-8KFT AGL WITH SHOWERS
AT MOST TAF SITES MAINLY BEFORE 24/09Z. WESTERLY WINDS WILL ALSO BE
A BIT BREEZY THIS EVENING AND AGAIN STARTING AFTER 18-20Z FRIDAY....
MOST SITES WILL SEE WINDS BETWEEN 10-15 KT WITH GUSTS OF 15-25 KT
DURING THESE TIMES. WINDS ARE FORECAST TO DECREASE AND MAINLY FOLLOW
THE TYPICAL DIURNAL TRENDS AFTER 24/06-09Z. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  59  39  56 /  20  10  10  30
ALW  45  60  42  58 /  20  10  10  40
PSC  43  64  42  62 /  10  10  10  20
YKM  39  61  37  60 /  10  10  10  20
HRI  41  62  40  60 /  10  10  10  20
ELN  38  58  35  58 /  20  10  20  20
RDM  31  54  30  53 /  20  10  30  30
LGD  38  56  35  52 /  30  10  10  50
GCD  39  55  35  52 /  30  10  20  40
DLS  42  62  42  62 /  20  10  30  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

$$

97/




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