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000
FXUS66 KPDT 211123 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
420 AM PDT THU AUG 21 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SATURDAY...A BENIGN WEATHER PATTERN IS
IN STORE FOR TODAY WITH A DRY AND STABLE NORTHWEST FLOW ALOFT
PERSISTING OVER THE CWA. THERE MAY BE A FEW HIGH THIN CLOUDS AND/OR
HIGH BASED FAIR WEATHER CUMULUS BUT NO THUNDERSTORMS OR SHOWERS ARE
EXPECTED. TONIGHT A TROUGH WILL DIG SOUTHWARD INTO THE PACIFIC
NORTHWEST BRINGING SOME LIMITED MOISTURE WITH IT. THERE MAY BE SOME
LIGHT RAIN SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES BUT
ELSEWHERE IT WILL BE DRY. A CLOSED UPPER LOW PRESSURE SYSTEM WILL
DEVELOP OVER THE CWA ON FRIDAY. SOME WRAP AROUND MOISTURE AND
INSTABILITY MAY CAUSE ISOLATED TO SCATTERED THUNDERSTORMS OVER MOST
OF THE CWA EXCEPT FOR CENTRAL OREGON AND THE SOUTHERN PORTIONS OF
THE JOHN DAY HIGHLANDS. THUNDERSTORMS ARE NOT EXPECTED TO BE STRONG
OR SEVERE AT THIS TIME. THEY WILL MAINLY BE CAUSED BY A COLD POOL OF
AIR ALOFT WITH THE UPPER TROUGH OVERHEAD CAUSING STEEP TEMPERATURE
LAPSE RATES. AS THE ATMOSPHERE BECOMES STABLE AGAIN LATE FRIDAY
NIGHT AND SATURDAY MORNING THUNDERSTORMS WILL DISSIPATE TO JUST A
FEW SHOWERS OVER THE NORTHEAST MOUNTAINS DUE TO UPSLOPE WINDS. THERE
MAY ALSO BE SOME SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES. BY
SATURDAY AFTERNOON INSTABILITY WILL INCREASE AND THEN THERE WILL BE
A SLIGHT CHANCE OF THUNDERSTORMS AGAIN IN THE AFOREMENTIONED AREAS.
WINDS THROUGH THE SHORT TERM PERIOD WILL BE MOSTLY LIGHT AT 15 KTS
OR LESS. HOWEVER THERE WILL BE LOCALLY BREEZY WINDS OF 15 TO 25 MPH
AT TIMES IN THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND THE
EASTERN COLUMBIA RIVER GORGE. TEMPERATURES WILL BE COOLER THAN
NORMAL FOR THE NEXT COUPLE OF DAYS AND THEN THEY WILL BEGIN TO
REBOUND UPWARD AGAIN ON SATURDAY. 88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...AN UPPER LEVEL RIDGE
WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY. THIS WILL KEEP
EASTERN WASHINGTON AND OREGON UNDER NORTH TO NORTHWEST FLOW UNTIL
WEDNESDAY. SATURDAY AND SUNDAY A SERIES OF WEAK WAVES WILL MOVE DOWN
THE BACKSIDE OF THE RIDGE. DAYTIME HEATING...INSTABILITY...AND
LINGERING MOISTURE MAY COMBINE TO TRIGGER A FEW SHOWERS OVER THE
BLUE MOUNTAINS AND EAST SLOPES OF THE WASHINGTON CASCADES DURING THE
AFTERNOON AND EVENING. SUNDAY NIGHT AND MONDAY A STRONGER WAVE
MOVING DOWN THE RIDGE WILL DEVELOP INTO AN UPPER LOW IN MONTANA.
INSTABILITY ROTATING AROUND THE LOW AND STEEP LAPSE RATES MAY
TRIGGER A FEW SHOWERS AND THUNDERSTORMS OVER THE NORTHEAST OREGON
MOUNTAINS. TUESDAY THE RIDGE WILL MOVE INLAND. SUBSIDENCE ASSOCIATED
WITH THE RIDGE WILL BRING DRY AND WARMER CONDITIONS TO THE PACIFIC
NORTHWEST TUESDAY AND WEDNESDAY.  COONFIELD

&&

.AVIATION...12Z TAFS. MAINLY CLEAR SKIES THIS MORNING THEN SCT-BKN
CIRRUS BY AFTERNOON. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  54  77  56 /   0   0  20  30
ALW  83  56  79  59 /   0  10  20  40
PSC  85  56  82  59 /   0  10  20  30
YKM  81  51  79  54 /   0  10  30  30
HRI  83  54  81  56 /   0   0  20  30
ELN  78  51  76  55 /   0  10  40  30
RDM  77  42  73  43 /   0   0  10  10
LGD  78  47  72  49 /   0  10  30  40
GCD  78  45  71  50 /  10  10  10  20
DLS  80  56  79  58 /   0  10  20  20

&&

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

&&

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

$$

88/76/76







000
FXUS66 KPDT 211123 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
420 AM PDT THU AUG 21 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SATURDAY...A BENIGN WEATHER PATTERN IS
IN STORE FOR TODAY WITH A DRY AND STABLE NORTHWEST FLOW ALOFT
PERSISTING OVER THE CWA. THERE MAY BE A FEW HIGH THIN CLOUDS AND/OR
HIGH BASED FAIR WEATHER CUMULUS BUT NO THUNDERSTORMS OR SHOWERS ARE
EXPECTED. TONIGHT A TROUGH WILL DIG SOUTHWARD INTO THE PACIFIC
NORTHWEST BRINGING SOME LIMITED MOISTURE WITH IT. THERE MAY BE SOME
LIGHT RAIN SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES BUT
ELSEWHERE IT WILL BE DRY. A CLOSED UPPER LOW PRESSURE SYSTEM WILL
DEVELOP OVER THE CWA ON FRIDAY. SOME WRAP AROUND MOISTURE AND
INSTABILITY MAY CAUSE ISOLATED TO SCATTERED THUNDERSTORMS OVER MOST
OF THE CWA EXCEPT FOR CENTRAL OREGON AND THE SOUTHERN PORTIONS OF
THE JOHN DAY HIGHLANDS. THUNDERSTORMS ARE NOT EXPECTED TO BE STRONG
OR SEVERE AT THIS TIME. THEY WILL MAINLY BE CAUSED BY A COLD POOL OF
AIR ALOFT WITH THE UPPER TROUGH OVERHEAD CAUSING STEEP TEMPERATURE
LAPSE RATES. AS THE ATMOSPHERE BECOMES STABLE AGAIN LATE FRIDAY
NIGHT AND SATURDAY MORNING THUNDERSTORMS WILL DISSIPATE TO JUST A
FEW SHOWERS OVER THE NORTHEAST MOUNTAINS DUE TO UPSLOPE WINDS. THERE
MAY ALSO BE SOME SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES. BY
SATURDAY AFTERNOON INSTABILITY WILL INCREASE AND THEN THERE WILL BE
A SLIGHT CHANCE OF THUNDERSTORMS AGAIN IN THE AFOREMENTIONED AREAS.
WINDS THROUGH THE SHORT TERM PERIOD WILL BE MOSTLY LIGHT AT 15 KTS
OR LESS. HOWEVER THERE WILL BE LOCALLY BREEZY WINDS OF 15 TO 25 MPH
AT TIMES IN THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND THE
EASTERN COLUMBIA RIVER GORGE. TEMPERATURES WILL BE COOLER THAN
NORMAL FOR THE NEXT COUPLE OF DAYS AND THEN THEY WILL BEGIN TO
REBOUND UPWARD AGAIN ON SATURDAY. 88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...AN UPPER LEVEL RIDGE
WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY. THIS WILL KEEP
EASTERN WASHINGTON AND OREGON UNDER NORTH TO NORTHWEST FLOW UNTIL
WEDNESDAY. SATURDAY AND SUNDAY A SERIES OF WEAK WAVES WILL MOVE DOWN
THE BACKSIDE OF THE RIDGE. DAYTIME HEATING...INSTABILITY...AND
LINGERING MOISTURE MAY COMBINE TO TRIGGER A FEW SHOWERS OVER THE
BLUE MOUNTAINS AND EAST SLOPES OF THE WASHINGTON CASCADES DURING THE
AFTERNOON AND EVENING. SUNDAY NIGHT AND MONDAY A STRONGER WAVE
MOVING DOWN THE RIDGE WILL DEVELOP INTO AN UPPER LOW IN MONTANA.
INSTABILITY ROTATING AROUND THE LOW AND STEEP LAPSE RATES MAY
TRIGGER A FEW SHOWERS AND THUNDERSTORMS OVER THE NORTHEAST OREGON
MOUNTAINS. TUESDAY THE RIDGE WILL MOVE INLAND. SUBSIDENCE ASSOCIATED
WITH THE RIDGE WILL BRING DRY AND WARMER CONDITIONS TO THE PACIFIC
NORTHWEST TUESDAY AND WEDNESDAY.  COONFIELD

&&

.AVIATION...12Z TAFS. MAINLY CLEAR SKIES THIS MORNING THEN SCT-BKN
CIRRUS BY AFTERNOON. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  54  77  56 /   0   0  20  30
ALW  83  56  79  59 /   0  10  20  40
PSC  85  56  82  59 /   0  10  20  30
YKM  81  51  79  54 /   0  10  30  30
HRI  83  54  81  56 /   0   0  20  30
ELN  78  51  76  55 /   0  10  40  30
RDM  77  42  73  43 /   0   0  10  10
LGD  78  47  72  49 /   0  10  30  40
GCD  78  45  71  50 /  10  10  10  20
DLS  80  56  79  58 /   0  10  20  20

&&

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

&&

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

$$

88/76/76








000
FXUS66 KPDT 210920
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 AM PDT THU AUG 21 2014

.SHORT TERM...TODAY THROUGH SATURDAY...A BENIGN WEATHER PATTERN IS
IN STORE FOR TODAY WITH A DRY AND STABLE NORTHWEST FLOW ALOFT
PERSISTING OVER THE CWA. THERE MAY BE A FEW HIGH THIN CLOUDS AND/OR
HIGH BASED FAIR WEATHER CUMULUS BUT NO THUNDERSTORMS OR SHOWERS ARE
EXPECTED. TONIGHT A TROUGH WILL DIG SOUTHWARD INTO THE PACIFIC
NORTHWEST BRINGING SOME LIMITED MOISTURE WITH IT. THERE MAY BE SOME
LIGHT RAIN SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES BUT
ELSEWHERE IT WILL BE DRY. A CLOSED UPPER LOW PRESSURE SYSTEM WILL
DEVELOP OVER THE CWA ON FRIDAY. SOME WRAP AROUND MOISTURE AND
INSTABILITY MAY CAUSE ISOLATED TO SCATTERED THUNDERSTORMS OVER MOST
OF THE CWA EXCEPT FOR CENTRAL OREGON AND THE SOUTHERN PORTIONS OF
THE JOHN DAY HIGHLANDS. THUNDERSTORMS ARE NOT EXPECTED TO BE STRONG
OR SEVERE AT THIS TIME. THEY WILL MAINLY BE CAUSED BY A COLD POOL OF
AIR ALOFT WITH THE UPPER TROUGH OVERHEAD CAUSING STEEP TEMPERATURE
LAPSE RATES. AS THE ATMOSPHERE BECOMES STABLE AGAIN LATE FRIDAY
NIGHT AND SATURDAY MORNING THUNDERSTORMS WILL DISSIPATE TO JUST A
FEW SHOWERS OVER THE NORTHEAST MOUNTAINS DUE TO UPSLOPE WINDS. THERE
MAY ALSO BE SOME SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES. BY
SATURDAY AFTERNOON INSTABILITY WILL INCREASE AND THEN THERE WILL BE
A SLIGHT CHANCE OF THUNDERSTORMS AGAIN IN THE AFOREMENTIONED AREAS.
WINDS THROUGH THE SHORT TERM PERIOD WILL BE MOSTLY LIGHT AT 15 KTS
OR LESS. HOWEVER THERE WILL BE LOCALLY BREEZY WINDS OF 15 TO 25 MPH
AT TIMES IN THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND THE
EASTERN COLUMBIA RIVER GORGE. TEMPERATURES WILL BE COOLER THAN
NORMAL FOR THE NEXT COUPLE OF DAYS AND THEN THEY WILL BEGIN TO
REBOUND UPWARD AGAIN ON SATURDAY. 88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...AN UPPER LEVEL RIDGE
WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY. THIS WILL KEEP
EASTERN WASHINGTON AND OREGON UNDER NORTH TO NORTHWEST FLOW UNTIL
WEDNESDAY. SATURDAY AND SUNDAY A SERIES OF WEAK WAVES WILL MOVE DOWN
THE BACKSIDE OF THE RIDGE. DAYTIME HEATING...INSTABILITY...AND
LINGERING MOISTURE MAY COMBINE TO TRIGGER A FEW SHOWERS OVER THE
BLUE MOUNTAINS AND EAST SLOPES OF THE WASHINGTON CASCADES DURING THE
AFTERNOON AND EVENING. SUNDAY NIGHT AND MONDAY A STRONGER WAVE
MOVING DOWN THE RIDGE WILL DEVELOP INTO AN UPPER LOW IN MONTANA.
INSTABILITY ROTATING AROUND THE LOW AND STEEP LAPSE RATES MAY
TRIGGER A FEW SHOWERS AND THUNDERSTORMS OVER THE NORTHEAST OREGON
MOUNTAINS. TUESDAY THE RIDGE WILL MOVE INLAND. SUBSIDENCE ASSOCIATED
WITH THE RIDGE WILL BRING DRY AND WARMER CONDITIONS TO THE PACIFIC
NORTHWEST TUESDAY AND WEDNESDAY.  COONFIELD

&&

.AVIATION...06Z TAFS. MAINLY CLEAR SKIES TONIGHT INTO THURSDAY.
SCT-BKN CIRRUS BY AFTERNOON. WINDS 5-15KT TONIGHT AND 10-20KT
THURSDAY. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  54  77  56 /   0   0  20  30
ALW  83  56  79  59 /   0  10  20  40
PSC  85  56  82  59 /   0  10  20  30
YKM  81  51  79  54 /   0  10  30  30
HRI  83  54  81  56 /   0   0  20  30
ELN  78  51  76  55 /   0  10  40  30
RDM  77  42  73  43 /   0   0  10  10
LGD  78  47  72  49 /   0  10  30  40
GCD  78  45  71  50 /  10  10  10  20
DLS  80  56  79  58 /   0  10  20  20

&&

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

&&

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

$$

88/76/76







000
FXUS66 KPDT 210920
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 AM PDT THU AUG 21 2014

.SHORT TERM...TODAY THROUGH SATURDAY...A BENIGN WEATHER PATTERN IS
IN STORE FOR TODAY WITH A DRY AND STABLE NORTHWEST FLOW ALOFT
PERSISTING OVER THE CWA. THERE MAY BE A FEW HIGH THIN CLOUDS AND/OR
HIGH BASED FAIR WEATHER CUMULUS BUT NO THUNDERSTORMS OR SHOWERS ARE
EXPECTED. TONIGHT A TROUGH WILL DIG SOUTHWARD INTO THE PACIFIC
NORTHWEST BRINGING SOME LIMITED MOISTURE WITH IT. THERE MAY BE SOME
LIGHT RAIN SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES BUT
ELSEWHERE IT WILL BE DRY. A CLOSED UPPER LOW PRESSURE SYSTEM WILL
DEVELOP OVER THE CWA ON FRIDAY. SOME WRAP AROUND MOISTURE AND
INSTABILITY MAY CAUSE ISOLATED TO SCATTERED THUNDERSTORMS OVER MOST
OF THE CWA EXCEPT FOR CENTRAL OREGON AND THE SOUTHERN PORTIONS OF
THE JOHN DAY HIGHLANDS. THUNDERSTORMS ARE NOT EXPECTED TO BE STRONG
OR SEVERE AT THIS TIME. THEY WILL MAINLY BE CAUSED BY A COLD POOL OF
AIR ALOFT WITH THE UPPER TROUGH OVERHEAD CAUSING STEEP TEMPERATURE
LAPSE RATES. AS THE ATMOSPHERE BECOMES STABLE AGAIN LATE FRIDAY
NIGHT AND SATURDAY MORNING THUNDERSTORMS WILL DISSIPATE TO JUST A
FEW SHOWERS OVER THE NORTHEAST MOUNTAINS DUE TO UPSLOPE WINDS. THERE
MAY ALSO BE SOME SHOWERS OVER THE WASHINGTON CASCADE EAST SLOPES. BY
SATURDAY AFTERNOON INSTABILITY WILL INCREASE AND THEN THERE WILL BE
A SLIGHT CHANCE OF THUNDERSTORMS AGAIN IN THE AFOREMENTIONED AREAS.
WINDS THROUGH THE SHORT TERM PERIOD WILL BE MOSTLY LIGHT AT 15 KTS
OR LESS. HOWEVER THERE WILL BE LOCALLY BREEZY WINDS OF 15 TO 25 MPH
AT TIMES IN THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS AND THE
EASTERN COLUMBIA RIVER GORGE. TEMPERATURES WILL BE COOLER THAN
NORMAL FOR THE NEXT COUPLE OF DAYS AND THEN THEY WILL BEGIN TO
REBOUND UPWARD AGAIN ON SATURDAY. 88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...AN UPPER LEVEL RIDGE
WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY. THIS WILL KEEP
EASTERN WASHINGTON AND OREGON UNDER NORTH TO NORTHWEST FLOW UNTIL
WEDNESDAY. SATURDAY AND SUNDAY A SERIES OF WEAK WAVES WILL MOVE DOWN
THE BACKSIDE OF THE RIDGE. DAYTIME HEATING...INSTABILITY...AND
LINGERING MOISTURE MAY COMBINE TO TRIGGER A FEW SHOWERS OVER THE
BLUE MOUNTAINS AND EAST SLOPES OF THE WASHINGTON CASCADES DURING THE
AFTERNOON AND EVENING. SUNDAY NIGHT AND MONDAY A STRONGER WAVE
MOVING DOWN THE RIDGE WILL DEVELOP INTO AN UPPER LOW IN MONTANA.
INSTABILITY ROTATING AROUND THE LOW AND STEEP LAPSE RATES MAY
TRIGGER A FEW SHOWERS AND THUNDERSTORMS OVER THE NORTHEAST OREGON
MOUNTAINS. TUESDAY THE RIDGE WILL MOVE INLAND. SUBSIDENCE ASSOCIATED
WITH THE RIDGE WILL BRING DRY AND WARMER CONDITIONS TO THE PACIFIC
NORTHWEST TUESDAY AND WEDNESDAY.  COONFIELD

&&

.AVIATION...06Z TAFS. MAINLY CLEAR SKIES TONIGHT INTO THURSDAY.
SCT-BKN CIRRUS BY AFTERNOON. WINDS 5-15KT TONIGHT AND 10-20KT
THURSDAY. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  54  77  56 /   0   0  20  30
ALW  83  56  79  59 /   0  10  20  40
PSC  85  56  82  59 /   0  10  20  30
YKM  81  51  79  54 /   0  10  30  30
HRI  83  54  81  56 /   0   0  20  30
ELN  78  51  76  55 /   0  10  40  30
RDM  77  42  73  43 /   0   0  10  10
LGD  78  47  72  49 /   0  10  30  40
GCD  78  45  71  50 /  10  10  10  20
DLS  80  56  79  58 /   0  10  20  20

&&

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

&&

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

$$

88/76/76






000
FXUS66 KPDT 210528
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1025 PM PDT WED AUG 20 2014

.SHORT TERM...SATELLITE SHOWING CLEAR SKIES FOR THE REMAINDER OF THE
EVENING AND OVERNIGHT. DRY WESTERLY FLOW ALOFT CONTINUES THURSDAY
WITH SUNNY SKIES. UPPER LOW MOVES OVER THE FORECAST AREA FRIDAY WITH
SCATTERED SHOWERS AND THUNDERSTORMS. EXPECT MOST OF THIS ACTIVITY
WILL BE OVER WASHINGTON AND NORTHEAST OREGON. TEMPERATURES WILL BE
ON THE COOL SIDE THE NEXT FEW DAYS. HIGHS IN THE 70S TO LOWER 80S.
LOWS IN THE 40S TO LOWER 50S...WITH SOME UPPER 30S POSSIBLE. LIGHTER
WINDS THE NEXT FEW DAYS AS WELL. 94

.AVIATION...06Z TAFS. MAINLY CLEAR SKIES TONIGHT INTO THURSDAY.
SCT-BKN CIRRUS BY AFTERNOON. WINDS 5-15KT TONIGHT AND 10-20KT
THURSDAY.

&&

.PREV DISC... /ISSUED 232 PM PDT WED AUG 20 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...A FAIRLY DRY AND COOL
NORTHWEST FLOW WILL CONTINUE OVER THE REGION THROUGH THURSDAY AS A
BROAD UPPER LEVEL REMAIN OVER THE WESTERN U.S.. THURSDAY NIGHT A
SHORTWAVE DROPPING SOUTH FROM WESTERN CANADA WILL DEEPEN THE TROUGH
AND FORM A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND PACIFIC
NORTHWEST. THE COOLER AIR ALOFT ASSOCIATED WITH THIS SYSTEM WILL
THEN LEAD TO INCREASING INSTABILITY SHOWERS ON FRIDAY ACROSS MOST OF
THE FORECAST AREA. THE LOW WILL MOVE EAST INTO IDAHO ON SATURDAY
LEAVING SOME LINGERING SHOWERS IN THE FORECAST AREA MAINLY OVER THE
MOUNTAINS. TEMPERATURES WILL BE COOLEST ON FRIDAY AND SATURDAY
RUNNING 5 TO 10 DEGREES BELOW NORMAL.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...FORECAST AREA WILL
BE ON THE WESTERN FLANK OF A MID/UPPER TROUGH OVER IDAHO/MONTANA
SATURDAY EVENING FOR A SLIGHT CHANCE OF EVENING SHOWERS AND
THUNDERSTORMS OVER THE BLUE MOUNTAINS, THE ELKHORN MOUNTAINS AND THE
WALLOWA MOUNTAINS. ON SUNDAY THE PACIFIC NORTHWEST WILL BE UNDER THE
INFLUENCE OF NORTHWEST FLOW ALOFT ON THE EASTERN FLANK OF A
MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE NORTHEAST PACIFIC.
THERE WILL BE MARGINAL INSTABILITY IN THE NORTHEAST OREGON MOUNTAINS
SUNDAY AFTERNOON/EVENING FOR A SLIGHT CHANCE OF SHOWERS OVER THE
BLUE MOUNTAINS SUNDAY/SUNDAY NIGHT. ON MONDAY THERE WILL A TAD MORE
INSTABILITY ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE DIVING
SOUTHEAST FROM BRITISH COLUMBIA ACROSS WASHINGTON AND OREGON. THIS
WILL INTRODUCE  A SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND
THUNDERSTORMS IN THE BLUE MOUNTAINS. THEN ON TUESDAY AND WEDNESDAY
DRY CONDITIONS PREVAIL.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  81  52  78 /   0   0   0  20
ALW  58  81  56  79 /  10   0  10  20
PSC  55  84  56  81 /   0   0   0  20
YKM  51  80  51  78 /   0   0  10  30
HRI  55  84  54  81 /   0   0   0  20
ELN  53  80  51  77 /   0   0  10  40
RDM  40  75  42  71 /   0   0   0  10
LGD  47  78  47  73 /  10   0   0  30
GCD  45  77  45  72 /  10   0   0  10
DLS  55  80  56  79 /   0   0   0  20

&&

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

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

$$

94







000
FXUS66 KPDT 210211
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
711 PM PDT WED AUG 20 2014

.SHORT TERM...SATELLITE SHOWING CLEAR SKIES FOR THE REMAINDER OF THE
EVENING AND OVERNIGHT. DRY WESTERLY FLOW ALOFT CONTINUES THURSDAY
WITH SUNNY SKIES. UPPER LOW MOVES OVER THE FORECAST AREA FRIDAY WITH
SCATTERED SHOWERS AND THUNDERSTORMS. EXPECT MOST OF THIS ACTIVITY
WILL BE OVER WASHINGTON AND NORTHEAST OREGON. TEMPERATURES WILL BE
ON THE COOL SIDE THE NEXT FEW DAYS. HIGHS IN THE 70S TO LOWER 80S.
LOWS IN THE 40S TO LOWER 50S...WITH SOME UPPER 30S POSSIBLE. LIGHTER
WINDS THE NEXT FEW DAYS AS WELL. 94

&&

.PREV DISC... /ISSUED 232 PM PDT WED AUG 20 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...A FAIRLY DRY AND COOL
NORTHWEST FLOW WILL CONTINUE OVER THE REGION THROUGH THURSDAY AS A
BROAD UPPER LEVEL REMAIN OVER THE WESTERN U.S.. THURSDAY NIGHT A
SHORTWAVE DROPPING SOUTH FROM WESTERN CANADA WILL DEEPEN THE TROUGH
AND FORM A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND PACIFIC
NORTHWEST. THE COOLER AIR ALOFT ASSOCIATED WITH THIS SYSTEM WILL
THEN LEAD TO INCREASING INSTABILITY SHOWERS ON FRIDAY ACROSS MOST OF
THE FORECAST AREA. THE LOW WILL MOVE EAST INTO IDAHO ON SATURDAY
LEAVING SOME LINGERING SHOWERS IN THE FORECAST AREA MAINLY OVER THE
MOUNTAINS. TEMPERATURES WILL BE COOLEST ON FRIDAY AND SATURDAY
RUNNING 5 TO 10 DEGREES BELOW NORMAL.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...FORECAST AREA WILL
BE ON THE WESTERN FLANK OF A MID/UPPER TROUGH OVER IDAHO/MONTANA
SATURDAY EVENING FOR A SLIGHT CHANCE OF EVENING SHOWERS AND
THUNDERSTORMS OVER THE BLUE MOUNTAINS, THE ELKHORN MOUNTAINS AND THE
WALLOWA MOUNTAINS. ON SUNDAY THE PACIFIC NORTHWEST WILL BE UNDER THE
INFLUENCE OF NORTHWEST FLOW ALOFT ON THE EASTERN FLANK OF A
MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE NORTHEAST PACIFIC.
THERE WILL BE MARGINAL INSTABILITY IN THE NORTHEAST OREGON MOUNTAINS
SUNDAY AFTERNOON/EVENING FOR A SLIGHT CHANCE OF SHOWERS OVER THE
BLUE MOUNTAINS SUNDAY/SUNDAY NIGHT. ON MONDAY THERE WILL A TAD MORE
INSTABILITY ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE DIVING
SOUTHEAST FROM BRITISH COLUMBIA ACROSS WASHINGTON AND OREGON. THIS
WILL INTRODUCE  A SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND
THUNDERSTORMS IN THE BLUE MOUNTAINS. THEN ON TUESDAY AND WEDNESDAY
DRY CONDITIONS PREVAIL.  POLAN

AVIATION...00Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. SCT CIRRUS AT 20K FT AGL OVER BLUE MOUNTAINS THROUGH THE
REMAINDER OF THIS AFTERNOON AND ALSO AT KPDT AND KALW. KBDN AND KRDM
WILL HAVE SCT CUMULUS UNTIL AROUND 02Z/21ST. SKIES WILL BECOME
MAINLY CLEAR BY 03Z/21ST. SUSTAINED WINDS WILL BE 10-20 KTS FOR THE
REMAINDER OF THIS AFTERNOON THROUGH THIS EVENING AND THEN WEAKEN AND
BECOME DRAINAGE WINDS AFTER 07Z/21ST.  KDLS WILL HAVE GUSTS OF 25-30
KTS THIS AFTERNOON AND UNTIL AROUND 03Z/21ST THIS EVENING.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  81  52  78 /   0   0   0  20
ALW  58  81  56  79 /  10   0  10  20
PSC  55  84  56  81 /   0   0   0  20
YKM  51  80  51  78 /   0   0  10  30
HRI  55  84  54  81 /   0   0   0  20
ELN  53  80  51  77 /   0   0  10  40
RDM  40  75  42  71 /   0   0   0  10
LGD  47  78  47  73 /  10   0   0  30
GCD  45  77  45  72 /  10   0   0  10
DLS  55  80  56  79 /   0   0   0  20

&&

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

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

$$

94







000
FXUS66 KPDT 210211
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
711 PM PDT WED AUG 20 2014

.SHORT TERM...SATELLITE SHOWING CLEAR SKIES FOR THE REMAINDER OF THE
EVENING AND OVERNIGHT. DRY WESTERLY FLOW ALOFT CONTINUES THURSDAY
WITH SUNNY SKIES. UPPER LOW MOVES OVER THE FORECAST AREA FRIDAY WITH
SCATTERED SHOWERS AND THUNDERSTORMS. EXPECT MOST OF THIS ACTIVITY
WILL BE OVER WASHINGTON AND NORTHEAST OREGON. TEMPERATURES WILL BE
ON THE COOL SIDE THE NEXT FEW DAYS. HIGHS IN THE 70S TO LOWER 80S.
LOWS IN THE 40S TO LOWER 50S...WITH SOME UPPER 30S POSSIBLE. LIGHTER
WINDS THE NEXT FEW DAYS AS WELL. 94

&&

.PREV DISC... /ISSUED 232 PM PDT WED AUG 20 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...A FAIRLY DRY AND COOL
NORTHWEST FLOW WILL CONTINUE OVER THE REGION THROUGH THURSDAY AS A
BROAD UPPER LEVEL REMAIN OVER THE WESTERN U.S.. THURSDAY NIGHT A
SHORTWAVE DROPPING SOUTH FROM WESTERN CANADA WILL DEEPEN THE TROUGH
AND FORM A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND PACIFIC
NORTHWEST. THE COOLER AIR ALOFT ASSOCIATED WITH THIS SYSTEM WILL
THEN LEAD TO INCREASING INSTABILITY SHOWERS ON FRIDAY ACROSS MOST OF
THE FORECAST AREA. THE LOW WILL MOVE EAST INTO IDAHO ON SATURDAY
LEAVING SOME LINGERING SHOWERS IN THE FORECAST AREA MAINLY OVER THE
MOUNTAINS. TEMPERATURES WILL BE COOLEST ON FRIDAY AND SATURDAY
RUNNING 5 TO 10 DEGREES BELOW NORMAL.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...FORECAST AREA WILL
BE ON THE WESTERN FLANK OF A MID/UPPER TROUGH OVER IDAHO/MONTANA
SATURDAY EVENING FOR A SLIGHT CHANCE OF EVENING SHOWERS AND
THUNDERSTORMS OVER THE BLUE MOUNTAINS, THE ELKHORN MOUNTAINS AND THE
WALLOWA MOUNTAINS. ON SUNDAY THE PACIFIC NORTHWEST WILL BE UNDER THE
INFLUENCE OF NORTHWEST FLOW ALOFT ON THE EASTERN FLANK OF A
MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE NORTHEAST PACIFIC.
THERE WILL BE MARGINAL INSTABILITY IN THE NORTHEAST OREGON MOUNTAINS
SUNDAY AFTERNOON/EVENING FOR A SLIGHT CHANCE OF SHOWERS OVER THE
BLUE MOUNTAINS SUNDAY/SUNDAY NIGHT. ON MONDAY THERE WILL A TAD MORE
INSTABILITY ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE DIVING
SOUTHEAST FROM BRITISH COLUMBIA ACROSS WASHINGTON AND OREGON. THIS
WILL INTRODUCE  A SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND
THUNDERSTORMS IN THE BLUE MOUNTAINS. THEN ON TUESDAY AND WEDNESDAY
DRY CONDITIONS PREVAIL.  POLAN

AVIATION...00Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. SCT CIRRUS AT 20K FT AGL OVER BLUE MOUNTAINS THROUGH THE
REMAINDER OF THIS AFTERNOON AND ALSO AT KPDT AND KALW. KBDN AND KRDM
WILL HAVE SCT CUMULUS UNTIL AROUND 02Z/21ST. SKIES WILL BECOME
MAINLY CLEAR BY 03Z/21ST. SUSTAINED WINDS WILL BE 10-20 KTS FOR THE
REMAINDER OF THIS AFTERNOON THROUGH THIS EVENING AND THEN WEAKEN AND
BECOME DRAINAGE WINDS AFTER 07Z/21ST.  KDLS WILL HAVE GUSTS OF 25-30
KTS THIS AFTERNOON AND UNTIL AROUND 03Z/21ST THIS EVENING.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  81  52  78 /   0   0   0  20
ALW  58  81  56  79 /  10   0  10  20
PSC  55  84  56  81 /   0   0   0  20
YKM  51  80  51  78 /   0   0  10  30
HRI  55  84  54  81 /   0   0   0  20
ELN  53  80  51  77 /   0   0  10  40
RDM  40  75  42  71 /   0   0   0  10
LGD  47  78  47  73 /  10   0   0  30
GCD  45  77  45  72 /  10   0   0  10
DLS  55  80  56  79 /   0   0   0  20

&&

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

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

$$

94






000
FXUS66 KPDT 202132
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
232 PM PDT WED AUG 20 2014

.SHORT TERM...TONIGHT THROUGH SATURDAY...A FAIRLY DRY AND COOL
NORTHWEST FLOW WILL CONTINUE OVER THE REGION THROUGH THURSDAY AS A
BROAD UPPER LEVEL REMAIN OVER THE WESTERN U.S.. THURSDAY NIGHT A
SHORTWAVE DROPPING SOUTH FROM WESTERN CANADA WILL DEEPEN THE TROUGH
AND FORM A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND PACIFIC
NORTHWEST. THE COOLER AIR ALOFT ASSOCIATED WITH THIS SYSTEM WILL
THEN LEAD TO INCREASING INSTABILITY SHOWERS ON FRIDAY ACROSS MOST OF
THE FORECAST AREA. THE LOW WILL MOVE EAST INTO IDAHO ON SATURDAY
LEAVING SOME LINGERING SHOWERS IN THE FORECAST AREA MAINLY OVER THE
MOUNTAINS. TEMPERATURES WILL BE COOLEST ON FRIDAY AND SATURDAY
RUNNING 5 TO 10 DEGREES BELOW NORMAL.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...FORECAST AREA WILL
BE ON THE WESTERN FLANK OF A MID/UPPER TROUGH OVER IDAHO/MONTANA
SATURDAY EVENING FOR A SLIGHT CHANCE OF EVENING SHOWERS AND
THUNDERSTORMS OVER THE BLUE MOUNTAINS, THE ELKHORN MOUNTAINS AND THE
WALLOWA MOUNTAINS. ON SUNDAY THE PACIFIC NORTHWEST WILL BE UNDER THE
INFLUENCE OF NORTHWEST FLOW ALOFT ON THE EASTERN FLANK OF A
MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE NORTHEAST PACIFIC.
THERE WILL BE MARGINAL INSTABILITY IN THE NORTHEAST OREGON MOUNTAINS
SUNDAY AFTERNOON/EVENING FOR A SLIGHT CHANCE OF SHOWERS OVER THE
BLUE MOUNTAINS SUNDAY/SUNDAY NIGHT. ON MONDAY THERE WILL A TAD MORE
INSTABILITY ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE DIVING
SOUTHEAST FROM BRITISH COLUMBIA ACROSS WASHINGTON AND OREGON. THIS
WILL INTRODUCE  A SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND
THUNDERSTORMS IN THE BLUE MOUNTAINS. THEN ON TUESDAY AND WEDNESDAY
DRY CONDITIONS PREVAIL.  POLAN


&&

.AVIATION...00Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. SCT CIRRUS AT 20K FT AGL OVER BLUE MOUNTAINS THROUGH THE
REMAINDER OF THIS AFTERNOON AND ALSO AT KPDT AND KALW. KBDN AND KRDM
WILL HAVE SCT CUMULUS UNTIL AROUND 02Z/21ST. SKIES WILL BECOME
MAINLY CLEAR BY 03Z/21ST. SUSTAINED WINDS WILL BE 10-20 KTS FOR THE
REMAINDER OF THIS AFTERNOON THROUGH THIS EVENING AND THEN WEAKEN AND
BECOME DRAINAGE WINDS AFTER 07Z/21ST.  KDLS WILL HAVE GUSTS OF 25-30
KTS THIS AFTERNOON AND UNTIL AROUND 03Z/21ST THIS EVENING.  POLAN


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  81  53  78 /   0   0   0  20
ALW  60  81  59  79 /  10   0  10  20
PSC  59  84  59  81 /   0   0   0  20
YKM  52  80  54  78 /   0   0  10  30
HRI  57  84  56  81 /   0   0   0  20
ELN  56  80  55  77 /   0   0  10  40
RDM  41  75  43  71 /   0   0   0  10
LGD  47  78  49  73 /  10   0   0  30
GCD  47  77  50  72 /  10   0   0  10
DLS  56  80  59  79 /   0   0   0  20

&&

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

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

$$

91/99/99










000
FXUS66 KPDT 202132
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
232 PM PDT WED AUG 20 2014

.SHORT TERM...TONIGHT THROUGH SATURDAY...A FAIRLY DRY AND COOL
NORTHWEST FLOW WILL CONTINUE OVER THE REGION THROUGH THURSDAY AS A
BROAD UPPER LEVEL REMAIN OVER THE WESTERN U.S.. THURSDAY NIGHT A
SHORTWAVE DROPPING SOUTH FROM WESTERN CANADA WILL DEEPEN THE TROUGH
AND FORM A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND PACIFIC
NORTHWEST. THE COOLER AIR ALOFT ASSOCIATED WITH THIS SYSTEM WILL
THEN LEAD TO INCREASING INSTABILITY SHOWERS ON FRIDAY ACROSS MOST OF
THE FORECAST AREA. THE LOW WILL MOVE EAST INTO IDAHO ON SATURDAY
LEAVING SOME LINGERING SHOWERS IN THE FORECAST AREA MAINLY OVER THE
MOUNTAINS. TEMPERATURES WILL BE COOLEST ON FRIDAY AND SATURDAY
RUNNING 5 TO 10 DEGREES BELOW NORMAL.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...FORECAST AREA WILL
BE ON THE WESTERN FLANK OF A MID/UPPER TROUGH OVER IDAHO/MONTANA
SATURDAY EVENING FOR A SLIGHT CHANCE OF EVENING SHOWERS AND
THUNDERSTORMS OVER THE BLUE MOUNTAINS, THE ELKHORN MOUNTAINS AND THE
WALLOWA MOUNTAINS. ON SUNDAY THE PACIFIC NORTHWEST WILL BE UNDER THE
INFLUENCE OF NORTHWEST FLOW ALOFT ON THE EASTERN FLANK OF A
MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE NORTHEAST PACIFIC.
THERE WILL BE MARGINAL INSTABILITY IN THE NORTHEAST OREGON MOUNTAINS
SUNDAY AFTERNOON/EVENING FOR A SLIGHT CHANCE OF SHOWERS OVER THE
BLUE MOUNTAINS SUNDAY/SUNDAY NIGHT. ON MONDAY THERE WILL A TAD MORE
INSTABILITY ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE DIVING
SOUTHEAST FROM BRITISH COLUMBIA ACROSS WASHINGTON AND OREGON. THIS
WILL INTRODUCE  A SLIGHT CHANCE OF AFTERNOON/EVENING SHOWERS AND
THUNDERSTORMS IN THE BLUE MOUNTAINS. THEN ON TUESDAY AND WEDNESDAY
DRY CONDITIONS PREVAIL.  POLAN


&&

.AVIATION...00Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. SCT CIRRUS AT 20K FT AGL OVER BLUE MOUNTAINS THROUGH THE
REMAINDER OF THIS AFTERNOON AND ALSO AT KPDT AND KALW. KBDN AND KRDM
WILL HAVE SCT CUMULUS UNTIL AROUND 02Z/21ST. SKIES WILL BECOME
MAINLY CLEAR BY 03Z/21ST. SUSTAINED WINDS WILL BE 10-20 KTS FOR THE
REMAINDER OF THIS AFTERNOON THROUGH THIS EVENING AND THEN WEAKEN AND
BECOME DRAINAGE WINDS AFTER 07Z/21ST.  KDLS WILL HAVE GUSTS OF 25-30
KTS THIS AFTERNOON AND UNTIL AROUND 03Z/21ST THIS EVENING.  POLAN


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  81  53  78 /   0   0   0  20
ALW  60  81  59  79 /  10   0  10  20
PSC  59  84  59  81 /   0   0   0  20
YKM  52  80  54  78 /   0   0  10  30
HRI  57  84  56  81 /   0   0   0  20
ELN  56  80  55  77 /   0   0  10  40
RDM  41  75  43  71 /   0   0   0  10
LGD  47  78  49  73 /  10   0   0  30
GCD  47  77  50  72 /  10   0   0  10
DLS  56  80  59  79 /   0   0   0  20

&&

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

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

$$

91/99/99









000
FXUS66 KPDT 201759 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1059 AM PDT WED AUG 20 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...FORECAST AREA WILL CONTINUE TO BE
UNDER A WEAK CYCLONIC FLOW OUT OF THE NORTHWEST. THERE WILL CONTINUE
TO BE A LITTLE INSTABILITY NEAR THE IDAHO BORDER FOR THE THREAT OF
SHOWERS AND OR THUNDERSTORMS FOR LATE AFTERNOON THROUGH EVENING.
OTHERWISE THE FORECAST AREA WILL REMAIN DRY...COOLER AND BREEZY.

&&

.AVIATION...18Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. BKN-OVC CIRRUS AT 20K FT AGL AT KYKM, KDLS, KPSC, KPDT AND
KALW. KRDM WILL HAVE SCT STRATOCUMULUS AT 4K FT AGL INTO EARLY
AFTERNOON. KBDN WILL HAVE BKN STRATOCUMULUS UNTIL AROUND 22Z, THEN
SCT 5K FT AGL FOR REMAINDER OF THIS AFTERNOON. SKIES THEN BECOMING
MAINLY CLEAR BY 00Z-03Z/21ST. SUSTAINED WINDS INCREASING TO 10-20
KTS IN THE AFTERNOON. KDLS WILL HAVE GUSTS OF 25-30 KTS THIS
AFTERNOON.  POLAN

&&

.PREVIOUS DISCUSSIONS... /ISSUED 225 AM PDT WED AUG 20 2014/

SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  83  53  81  53 /   0   0   0  10
ALW  83  60  81  59 /   0  10   0  10
PSC  86  59  84  58 /   0   0   0  10
YKM  84  52  80  54 /   0   0   0  10
HRI  85  57  84  56 /   0   0   0   0
ELN  82  56  80  55 /   0   0   0  10
RDM  76  41  75  43 /   0   0   0   0
LGD  79  47  78  49 /  10  10   0  10
GCD  78  47  77  50 /  10  10   0  10
DLS  81  56  80  58 /   0   0   0  10

&&

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

&&

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

$$

91/99/88/76







000
FXUS66 KPDT 201759 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1059 AM PDT WED AUG 20 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...FORECAST AREA WILL CONTINUE TO BE
UNDER A WEAK CYCLONIC FLOW OUT OF THE NORTHWEST. THERE WILL CONTINUE
TO BE A LITTLE INSTABILITY NEAR THE IDAHO BORDER FOR THE THREAT OF
SHOWERS AND OR THUNDERSTORMS FOR LATE AFTERNOON THROUGH EVENING.
OTHERWISE THE FORECAST AREA WILL REMAIN DRY...COOLER AND BREEZY.

&&

.AVIATION...18Z TAFS...VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS. BKN-OVC CIRRUS AT 20K FT AGL AT KYKM, KDLS, KPSC, KPDT AND
KALW. KRDM WILL HAVE SCT STRATOCUMULUS AT 4K FT AGL INTO EARLY
AFTERNOON. KBDN WILL HAVE BKN STRATOCUMULUS UNTIL AROUND 22Z, THEN
SCT 5K FT AGL FOR REMAINDER OF THIS AFTERNOON. SKIES THEN BECOMING
MAINLY CLEAR BY 00Z-03Z/21ST. SUSTAINED WINDS INCREASING TO 10-20
KTS IN THE AFTERNOON. KDLS WILL HAVE GUSTS OF 25-30 KTS THIS
AFTERNOON.  POLAN

&&

.PREVIOUS DISCUSSIONS... /ISSUED 225 AM PDT WED AUG 20 2014/

SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  83  53  81  53 /   0   0   0  10
ALW  83  60  81  59 /   0  10   0  10
PSC  86  59  84  58 /   0   0   0  10
YKM  84  52  80  54 /   0   0   0  10
HRI  85  57  84  56 /   0   0   0   0
ELN  82  56  80  55 /   0   0   0  10
RDM  76  41  75  43 /   0   0   0   0
LGD  79  47  78  49 /  10  10   0  10
GCD  78  47  77  50 /  10  10   0  10
DLS  81  56  80  58 /   0   0   0  10

&&

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

&&

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

$$

91/99/88/76








000
FXUS66 KPDT 201451
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 AM PDT WED AUG 20 2014

.SHORT TERM...TODAY AND TONIGHT...FORECAST AREA WILL CONTINUE TO BE
UNDER A WEAK CYCLONIC FLOW OUT OF THE NORTHWEST. THERE WILL CONTINUE
TO BE A LITTLE INSTABILITY NEAR THE IDAHO BORDER FOR THE THREAT OF
SHOWERS AND OR THUNDERSTORMS FOR LATE AFTERNOON THROUGH EVENING.
OTHERWISE THE FORECAST AREA WILL REMAIN DRY...COOLER AND BREEZY.


&&

.PREV DISC... /ISSUED 225 AM PDT WED AUG 20 2014/

SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

AVIATION...12Z TAFS....VFR CONDITIONS EXPECTED FOR THE NEXT 24
HOURS. TAF SITES MAINLY CLEAR WITH VARIABLE CIRRUS AT KYKM AND KPSC.
WINDS 5-15KT INCREASING TO 10-20 IN THE AFTERNOON 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  83  53  81  53 /   0   0   0  10
ALW  83  60  81  59 /   0  10   0  10
PSC  86  59  84  58 /   0   0   0  10
YKM  84  52  80  54 /   0   0   0  10
HRI  85  57  84  56 /   0   0   0   0
ELN  82  56  80  55 /   0   0   0  10
RDM  76  41  75  43 /   0   0   0   0
LGD  79  47  78  49 /  10  10   0  10
GCD  78  47  77  50 /  10  10   0  10
DLS  81  56  80  58 /   0   0   0  10

&&

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

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

$$

91/99/99









000
FXUS66 KPDT 201451
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 AM PDT WED AUG 20 2014

.SHORT TERM...TODAY AND TONIGHT...FORECAST AREA WILL CONTINUE TO BE
UNDER A WEAK CYCLONIC FLOW OUT OF THE NORTHWEST. THERE WILL CONTINUE
TO BE A LITTLE INSTABILITY NEAR THE IDAHO BORDER FOR THE THREAT OF
SHOWERS AND OR THUNDERSTORMS FOR LATE AFTERNOON THROUGH EVENING.
OTHERWISE THE FORECAST AREA WILL REMAIN DRY...COOLER AND BREEZY.


&&

.PREV DISC... /ISSUED 225 AM PDT WED AUG 20 2014/

SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

AVIATION...12Z TAFS....VFR CONDITIONS EXPECTED FOR THE NEXT 24
HOURS. TAF SITES MAINLY CLEAR WITH VARIABLE CIRRUS AT KYKM AND KPSC.
WINDS 5-15KT INCREASING TO 10-20 IN THE AFTERNOON 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  83  53  81  53 /   0   0   0  10
ALW  83  60  81  59 /   0  10   0  10
PSC  86  59  84  58 /   0   0   0  10
YKM  84  52  80  54 /   0   0   0  10
HRI  85  57  84  56 /   0   0   0   0
ELN  82  56  80  55 /   0   0   0  10
RDM  76  41  75  43 /   0   0   0   0
LGD  79  47  78  49 /  10  10   0  10
GCD  78  47  77  50 /  10  10   0  10
DLS  81  56  80  58 /   0   0   0  10

&&

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

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

$$

91/99/99










000
FXUS66 KPDT 201126 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT WED AUG 20 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.AVIATION...12Z TAFS....VFR CONDITIONS EXPECTED FOR THE NEXT 24
HOURS. TAF SITES MAINLY CLEAR WITH VARIABLE CIRRUS AT KYKM AND KPSC.
WINDS 5-15KT INCREASING TO 10-20 IN THE AFTERNOON 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  52  78  53 /   0   0   0  10
ALW  82  58  79  59 /   0  10   0  10
PSC  85  57  81  58 /   0   0   0  10
YKM  82  54  78  54 /   0   0   0  10
HRI  84  55  81  56 /   0   0   0   0
ELN  80  56  77  55 /   0   0   0  10
RDM  77  40  73  43 /   0   0   0   0
LGD  80  47  76  49 /  10  10   0  10
GCD  79  47  75  50 /  10  10   0  10
DLS  79  54  77  58 /   0   0   0  10

&&

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

&&

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

$$

88/76/76







000
FXUS66 KPDT 201126 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT WED AUG 20 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.AVIATION...12Z TAFS....VFR CONDITIONS EXPECTED FOR THE NEXT 24
HOURS. TAF SITES MAINLY CLEAR WITH VARIABLE CIRRUS AT KYKM AND KPSC.
WINDS 5-15KT INCREASING TO 10-20 IN THE AFTERNOON 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  52  78  53 /   0   0   0  10
ALW  82  58  79  59 /   0  10   0  10
PSC  85  57  81  58 /   0   0   0  10
YKM  82  54  78  54 /   0   0   0  10
HRI  84  55  81  56 /   0   0   0   0
ELN  80  56  77  55 /   0   0   0  10
RDM  77  40  73  43 /   0   0   0   0
LGD  80  47  76  49 /  10  10   0  10
GCD  79  47  75  50 /  10  10   0  10
DLS  79  54  77  58 /   0   0   0  10

&&

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

&&

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

$$

88/76/76








000
FXUS66 KPDT 200925
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT WED AUG 20 2014

.SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.AVIATION...06Z TAFS. A FEW SHOWERS POSSIBLE AT PDT ALW WITH SCT-BKN
080 THROUGH 09Z. OTHERWISE REMAINDER OF THE TAF SITES MAINLY CLEAR
TONIGHT. WINDS DECREASING OVERNIGHT TO 5-15KT. MAINLY CLEAR SKIES
WEDNESDAY. WINDS 10-25KT. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  52  78  53 /   0   0   0  10
ALW  82  58  79  59 /   0  10   0  10
PSC  85  57  81  58 /   0   0   0  10
YKM  82  54  78  54 /   0   0   0  10
HRI  84  55  81  56 /   0   0   0   0
ELN  80  56  77  55 /   0   0   0  10
RDM  77  40  73  43 /   0   0   0   0
LGD  80  47  76  49 /  10  10   0  10
GCD  79  47  75  50 /  10  10   0  10
DLS  79  54  77  58 /   0   0   0  10

&&

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

&&

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

$$

88/76/76






000
FXUS66 KPDT 200925
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 AM PDT WED AUG 20 2014

.SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER TROUGH OVER THE REGION
WILL PERSIST THROUGH THE EXTENDED FORECAST PERIOD. THE TROUGH AXIS
WILL MOVE EASTWARD SLIGHTLY CAUSING A NORTHWEST FLOW ON THE BACK
SIDE OF THE TROUGH FOR TODAY THROUGH THURSDAY MORNING OVER THE CWA.
THIS WILL KEEP DRY AND STABLE CONDITIONS OVER THE CWA THROUGH THAT
TIME PERIOD. MAX TEMPERATURES WILL BE ON A COOLING TREND WITH HIGHS
ONLY IN THE MID 70S TO LOWER 80S...EXCEPT 60S TO LOWER 70S
MOUNTAINS. OVERNIGHT LOWS WILL RANGE FROM THE MID 30S TO MID 40S
MOUNTAINS TO THE 50S IN THE LOWER ELEVATIONS. AN UPPER LOW PRESSURE
SYSTEM WILL DEVELOP OVER THE PACIFIC NORTHWEST AND SLIDE SOUTH INTO
THE CWA ON FRIDAY. THIS WILL TRANSPORT MORE UNSTABLE AIR INTO THE
CWA ON FRIDAY. AS A RESULT THERE WILL BE SHOWERS AND A SLIGHT CHANCE
FOR THUNDERSTORMS. THE LEAST LIKELY PLACE TOO RECEIVE THUNDERSTORMS
WILL BE OVER CENTRAL OREGON ON DAY 3. SLIGHT CHANCE TO CHANCE
THUNDERSTORMS WILL OCCUR ELSEWHERE...WITH THE GREATEST CHANCE OVER
THE NORTHERN BLUE MOUNTAINS AND WALLOWA COUNTY AND THE GRANDE RONDE
VALLEY ON FRIDAY. THE STRONGEST WINDS WILL BE IN THE LOWER COLUMBIA
BASIN AND ADJACENT VALLEYS...ESPECIALLY ON FRIDAY. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...AN UPPER LEVEL LOW WILL
MOVE SOUTHEAST ACROSS SOUTHEAST WASHINGTON AND EASTERN OREGON FRIDAY
NIGHT. INSTABILITY AND MOISTURE ASSOCIATED WITH THE LOW WILL TRIGGER
SHOWERS AND THUNDERSTORMS ACROSS MOST OF THE CWA...WITH THE HIGHEST
POPS OVER THE EASTERN MOUNTAINS AND THE EAST SLOPES OF THE
WASHINGTON CASCADES DUE TO ENHANCEMENT BY OROGRAPHIC LIFT. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST SATURDAY AND SUNDAY.
THIS WILL KEEP THE AREA UNDER NORTH TO NORTHWEST FLOW DURING THE
REST OF THE LONG TERM PERIOD. SATURDAY AND SUNDAY A SERIES OF WEAK
WAVES WILL MOVE DOWN THE BACKSIDE OF THE RIDGE. DAYTIME
HEATING...INSTABILITY...AND LINGERING MOISTURE MAY COMBINE TO
TRIGGER A FEW SHOWERS OVER THE BLUE MOUNTAINS AND EAST SLOPES OF THE
WASHINGTON CASCADES DURING THE AFTERNOON AND EVENING. MONDAY AND
TUESDAY A DRY AND WARMER CONDITIONS WILL BUILD INTO THE PACIFIC
NORTHWEST DUE TO SUBSIDENCE ASSOCIATED WITH THE RIDGE.  COONFIELD

&&

.AVIATION...06Z TAFS. A FEW SHOWERS POSSIBLE AT PDT ALW WITH SCT-BKN
080 THROUGH 09Z. OTHERWISE REMAINDER OF THE TAF SITES MAINLY CLEAR
TONIGHT. WINDS DECREASING OVERNIGHT TO 5-15KT. MAINLY CLEAR SKIES
WEDNESDAY. WINDS 10-25KT. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  81  52  78  53 /   0   0   0  10
ALW  82  58  79  59 /   0  10   0  10
PSC  85  57  81  58 /   0   0   0  10
YKM  82  54  78  54 /   0   0   0  10
HRI  84  55  81  56 /   0   0   0   0
ELN  80  56  77  55 /   0   0   0  10
RDM  77  40  73  43 /   0   0   0   0
LGD  80  47  76  49 /  10  10   0  10
GCD  79  47  75  50 /  10  10   0  10
DLS  79  54  77  58 /   0   0   0  10

&&

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

&&

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

$$

88/76/76







000
FXUS66 KPDT 200538
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1030 PM PDT TUE AUG 19 2014

.SHORT TERM...UPPER LEVEL TROUGH MOVING THROUGH THE AREA. MOST OF
THE THUNDERSTORM ACTIVITY THIS EVENING HAS BEEN NORTH OF OUR
FORECAST AREA TOWARD SPOKANE...AND EAST TOWARD BOISE. SHOULD SEE
CLEAR TO PARTLY CLOUDY SKIES OVERNIGHT WITH DECREASING WINDS. A DRY
NORTHWESTERLY FLOW ALOFT FOR WEDNESDAY AND THURSDAY WITH CLEAR TO
PARTLY CLOUDY SKIES. TEMPERATURES WILL BE COOLER WITH HIGHS IN THE
70S TO MID 80S. LOCALLY BREEZY WEST WINDS TOMORROW. GFS AND NAM BOTH
BRING AN UPPER LOW OVER THE REGION FRIDAY WHICH SHOULD INCREASE THE
SHOWER AND THUNDERSTORM COVERAGE.  94

.AVIATION...06Z TAFS. A FEW SHOWERS POSSIBLE AT PDT ALW WITH SCT-BKN
080 THROUGH 09Z. OTHERWISE REMAINDER OF THE TAF SITES MAINLY CLEAR
TONIGHT. WINDS DECREASING OVERNIGHT TO 5-15KT. MAINLY CLEAR SKIES
WEDNESDAY. WINDS 10-25KT.

&&

.PREV DISC... /ISSUED 225 PM PDT TUE AUG 19 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...A DRY COLD FRONT CONTINUES
TO MOVE ACROSS THE FORECAST AREA TODAY FALLING APART AS IT DOES WITH
JUST A FEW HIGH CLOUDS REMAINING. OUT AHEAD OF THE FRONT THERE IS
SOME INSTABILITY STILL OVER FAR EASTERN OREGON WHICH COULD RESULT IN
SOME ISOLATED THUNDERSTORMS THIS EVENING MANLY EAST OF A LINE FROM
JOHN DAY TO LEWISTON. BEHIND THE FRONT AN INCREASING WEST TO EAST
GRADIENT IS BRING SOME COOLER AIR OVER THE CASCADES CREATING SOME
BREEZY CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES. THESE
WINDS WILL MOVE OUT INTO THE COLUMBIA BASIN THIS EVENING AND THEN
WINDS WILL DECREASE SOMEWHAT OVERNIGHT. FORECAST AREA WILL BE LEFT
UNDER A COOL NORTHWESTERLY FLOW WEDNESDAY AND THURSDAY AS A WEAK
TROUGH PATTERN REMAINS IN PLACE OVER THE PACIFIC NORTHWEST. COULD
SEE A FEW LINGERING SHOWERS THURSDAY AFTERNOON NEAR THE IDAHO
BORDER. LATE THURSDAY AND INTO FRIDAY THE TROUGH WILL DIP SOUTHWARD
AND DEVELOP INTO A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND
NORTHWEST. THIS WILL LEAD TO SOME INCREASED INSTABILITY FORMING
SHOWERS AND POSSIBLE THUNDERSTORMS FRIDAY AFTERNOON. FRIDAY WILL
ALSO BE THE COOLEST DAY WITH HIGHS IN THE LOWER BASIN ONLY CLIMBING
INTO THE LOWER 80S.

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...SEASONABLY STRONG
MID/UPPER LEVEL LOW PRESSURE SYSTEM WILL BE MOVING SOUTHEAST ACROSS
FORECAST AREA FRIDAY NIGHT. FROM SATURDAY OVERNIGHT UNTIL NOON ON
SATURDAY WRAP AROUND MOISTURE WILL INTERACT WILL THE EASTERN
MOUNTAINS AND THE EAST SLOPES OF THE CASCADES TO PRODUCE OROGRAPHIC
LIFT FOR A SLIGHT CHANCE OF SHOWERS OVER THE THOSE AREAS. OTHERWISE,
LEEWARD TERRAIN INFLUENCES PRODUCING DOWNSLOPE WINDS AND THUS
SINKING AIR WILL YIELD DRY CONDITIONS FOR LOWER TERRAIN THROUGH
FRIDAY NIGHT. SATURDAY AFTERNOON/EVENING COLDER AIR ALOFT ASSOCIATED
WITH THE LOW COMBINED WITH DAYTIME SURFACE HEATING WILL INCREASE
VERTICAL TEMPERATURE LAPSE RATES LEADING TO AN UNSTABLE AIR MASS
OVER THE BLUE MOUNTAINS, WALLOWA COUNTY AND OVER HIGHER TERRAIN IN
GRANT COUNTY. SATURDAY AFTERNOON/EVENING WILL THE UNSTABLE AREAS IN
THE EASTERN MOUNTAINS WILL BE UNDER A NORTHERLY FLOW ALOFT AS A
RESULT OF BEING ON THE WESTERN FLANK OF THE MID/UPPER LEVEL LOW, THE
CENTER OF WHICH WILL BE OVER IDAHO/WESTERN MONTANA. THUS ANY
THUNDERSTORMS THAT DO DEVELOP SATURDAY AFTERNOON/EVENING WILL BE
STEERED BY WINDS ALOFT TO MOVE FROM NORTH TO SOUTH, WHICH IS AN
UNUSUAL DIRECTION FOR THUNDERSTORMS MOVEMENT IN OUR REGION. BY
SUNDAY THE LOW WILL HAVE MOVED EASTERN MONTANA/WYOMING WHILE THE
EAST FLANK OF A MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE
NORTHEAST PACIFIC PUTS FORECAST AREA IN A NORTHWEST FLOW ALOFT,
WHICH WILL CREATE DRY CONDITIONS FOR MOST OF FORECAST AREA, EXCEPT
IN THE BLUE MOUNTAINS SUNDAY AFTERNOON/EARLY EVENING WHERE DAYTIME
SURFACE HEATING WILL YIELD MARGINAL INSTABILITY FOR A SLIGHT CHANCE
OF AFTERNOON/EARLY EVENING THUNDERSTORMS OVER THE BLUE MOUNTAINS AND
EASTERN GRANT COUNTY EASTWARD INTO IDAHO. ON MONDAY I KEPT A SLIGHT
CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS OVER THE
WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS, AND IN THE HIGHER
MOUNTAINS IN THE OCHOCO-JOHN DAY HIGHLANDS AS WELL AS THE STRAWBERRY
MOUNTAINS. ELSEWHERE ON MONDAY A NORTHWEST TO NORTH FLOW ALOFT WILL
PRODUCE SINKING MOTION AND DRY CONDITIONS. MONDAY NIGHT AND TUESDAY
THE PACIFIC NORTHWEST WILL BE UNDER A MID/UPPER LEVEL HIGH PRESSURE
RIDGE FOR DRY CONDITIONS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  61  83  54  81 /  10   0   0  10
ALW  64  84  61  82 /  10   0   0  10
PSC  64  87  59  84 /  10   0   0  10
YKM  59  84  55  81 /   0   0   0   0
HRI  63  86  57  84 /  10   0   0   0
ELN  59  82  57  80 /   0   0   0  10
RDM  50  79  41  76 /  10   0   0   0
LGD  55  82  48  79 /  10  10  10  10
GCD  52  81  48  78 /  10  10  10  10
DLS  62  81  57  80 /  10   0   0   0

&&

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

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

$$

94







000
FXUS66 KPDT 200538
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1030 PM PDT TUE AUG 19 2014

.SHORT TERM...UPPER LEVEL TROUGH MOVING THROUGH THE AREA. MOST OF
THE THUNDERSTORM ACTIVITY THIS EVENING HAS BEEN NORTH OF OUR
FORECAST AREA TOWARD SPOKANE...AND EAST TOWARD BOISE. SHOULD SEE
CLEAR TO PARTLY CLOUDY SKIES OVERNIGHT WITH DECREASING WINDS. A DRY
NORTHWESTERLY FLOW ALOFT FOR WEDNESDAY AND THURSDAY WITH CLEAR TO
PARTLY CLOUDY SKIES. TEMPERATURES WILL BE COOLER WITH HIGHS IN THE
70S TO MID 80S. LOCALLY BREEZY WEST WINDS TOMORROW. GFS AND NAM BOTH
BRING AN UPPER LOW OVER THE REGION FRIDAY WHICH SHOULD INCREASE THE
SHOWER AND THUNDERSTORM COVERAGE.  94

.AVIATION...06Z TAFS. A FEW SHOWERS POSSIBLE AT PDT ALW WITH SCT-BKN
080 THROUGH 09Z. OTHERWISE REMAINDER OF THE TAF SITES MAINLY CLEAR
TONIGHT. WINDS DECREASING OVERNIGHT TO 5-15KT. MAINLY CLEAR SKIES
WEDNESDAY. WINDS 10-25KT.

&&

.PREV DISC... /ISSUED 225 PM PDT TUE AUG 19 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...A DRY COLD FRONT CONTINUES
TO MOVE ACROSS THE FORECAST AREA TODAY FALLING APART AS IT DOES WITH
JUST A FEW HIGH CLOUDS REMAINING. OUT AHEAD OF THE FRONT THERE IS
SOME INSTABILITY STILL OVER FAR EASTERN OREGON WHICH COULD RESULT IN
SOME ISOLATED THUNDERSTORMS THIS EVENING MANLY EAST OF A LINE FROM
JOHN DAY TO LEWISTON. BEHIND THE FRONT AN INCREASING WEST TO EAST
GRADIENT IS BRING SOME COOLER AIR OVER THE CASCADES CREATING SOME
BREEZY CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES. THESE
WINDS WILL MOVE OUT INTO THE COLUMBIA BASIN THIS EVENING AND THEN
WINDS WILL DECREASE SOMEWHAT OVERNIGHT. FORECAST AREA WILL BE LEFT
UNDER A COOL NORTHWESTERLY FLOW WEDNESDAY AND THURSDAY AS A WEAK
TROUGH PATTERN REMAINS IN PLACE OVER THE PACIFIC NORTHWEST. COULD
SEE A FEW LINGERING SHOWERS THURSDAY AFTERNOON NEAR THE IDAHO
BORDER. LATE THURSDAY AND INTO FRIDAY THE TROUGH WILL DIP SOUTHWARD
AND DEVELOP INTO A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND
NORTHWEST. THIS WILL LEAD TO SOME INCREASED INSTABILITY FORMING
SHOWERS AND POSSIBLE THUNDERSTORMS FRIDAY AFTERNOON. FRIDAY WILL
ALSO BE THE COOLEST DAY WITH HIGHS IN THE LOWER BASIN ONLY CLIMBING
INTO THE LOWER 80S.

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...SEASONABLY STRONG
MID/UPPER LEVEL LOW PRESSURE SYSTEM WILL BE MOVING SOUTHEAST ACROSS
FORECAST AREA FRIDAY NIGHT. FROM SATURDAY OVERNIGHT UNTIL NOON ON
SATURDAY WRAP AROUND MOISTURE WILL INTERACT WILL THE EASTERN
MOUNTAINS AND THE EAST SLOPES OF THE CASCADES TO PRODUCE OROGRAPHIC
LIFT FOR A SLIGHT CHANCE OF SHOWERS OVER THE THOSE AREAS. OTHERWISE,
LEEWARD TERRAIN INFLUENCES PRODUCING DOWNSLOPE WINDS AND THUS
SINKING AIR WILL YIELD DRY CONDITIONS FOR LOWER TERRAIN THROUGH
FRIDAY NIGHT. SATURDAY AFTERNOON/EVENING COLDER AIR ALOFT ASSOCIATED
WITH THE LOW COMBINED WITH DAYTIME SURFACE HEATING WILL INCREASE
VERTICAL TEMPERATURE LAPSE RATES LEADING TO AN UNSTABLE AIR MASS
OVER THE BLUE MOUNTAINS, WALLOWA COUNTY AND OVER HIGHER TERRAIN IN
GRANT COUNTY. SATURDAY AFTERNOON/EVENING WILL THE UNSTABLE AREAS IN
THE EASTERN MOUNTAINS WILL BE UNDER A NORTHERLY FLOW ALOFT AS A
RESULT OF BEING ON THE WESTERN FLANK OF THE MID/UPPER LEVEL LOW, THE
CENTER OF WHICH WILL BE OVER IDAHO/WESTERN MONTANA. THUS ANY
THUNDERSTORMS THAT DO DEVELOP SATURDAY AFTERNOON/EVENING WILL BE
STEERED BY WINDS ALOFT TO MOVE FROM NORTH TO SOUTH, WHICH IS AN
UNUSUAL DIRECTION FOR THUNDERSTORMS MOVEMENT IN OUR REGION. BY
SUNDAY THE LOW WILL HAVE MOVED EASTERN MONTANA/WYOMING WHILE THE
EAST FLANK OF A MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE
NORTHEAST PACIFIC PUTS FORECAST AREA IN A NORTHWEST FLOW ALOFT,
WHICH WILL CREATE DRY CONDITIONS FOR MOST OF FORECAST AREA, EXCEPT
IN THE BLUE MOUNTAINS SUNDAY AFTERNOON/EARLY EVENING WHERE DAYTIME
SURFACE HEATING WILL YIELD MARGINAL INSTABILITY FOR A SLIGHT CHANCE
OF AFTERNOON/EARLY EVENING THUNDERSTORMS OVER THE BLUE MOUNTAINS AND
EASTERN GRANT COUNTY EASTWARD INTO IDAHO. ON MONDAY I KEPT A SLIGHT
CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS OVER THE
WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS, AND IN THE HIGHER
MOUNTAINS IN THE OCHOCO-JOHN DAY HIGHLANDS AS WELL AS THE STRAWBERRY
MOUNTAINS. ELSEWHERE ON MONDAY A NORTHWEST TO NORTH FLOW ALOFT WILL
PRODUCE SINKING MOTION AND DRY CONDITIONS. MONDAY NIGHT AND TUESDAY
THE PACIFIC NORTHWEST WILL BE UNDER A MID/UPPER LEVEL HIGH PRESSURE
RIDGE FOR DRY CONDITIONS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  61  83  54  81 /  10   0   0  10
ALW  64  84  61  82 /  10   0   0  10
PSC  64  87  59  84 /  10   0   0  10
YKM  59  84  55  81 /   0   0   0   0
HRI  63  86  57  84 /  10   0   0   0
ELN  59  82  57  80 /   0   0   0  10
RDM  50  79  41  76 /  10   0   0   0
LGD  55  82  48  79 /  10  10  10  10
GCD  52  81  48  78 /  10  10  10  10
DLS  62  81  57  80 /  10   0   0   0

&&

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

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

$$

94








000
FXUS66 KPDT 200258
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
800 PM PDT TUE AUG 19 2014

.SHORT TERM...UPPER LEVEL TROUGH MOVING THROUGH THE AREA. MOST OF
THE THUNDERSTORM ACTIVITY THIS EVENING HAS BEEN NORTH OF OUR
FORECAST AREA TOWARD SPOKANE...AND EAST TOWARD BOISE. SHOULD SEE
CLEAR TO PARTLY CLOUDY SKIES OVERNIGHT WITH DECREASING WINDS. A DRY
NORTHWESTERLY FLOW ALOFT FOR WEDNESDAY AND THURSDAY WITH CLEAR TO
PARTLY CLOUDY SKIES. TEMPERATURES WILL BE COOLER WITH HIGHS IN THE
70S TO MID 80S. LOCALLY BREEZY WEST WINDS TOMORROW. GFS AND NAM BOTH
BRING AN UPPER LOW OVER THE REGION FRIDAY WHICH SHOULD INCREASE THE
SHOWER AND THUNDERSTORM COVERAGE.  94

&&

.PREV DISC... /ISSUED 225 PM PDT TUE AUG 19 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...A DRY COLD FRONT CONTINUES
TO MOVE ACROSS THE FORECAST AREA TODAY FALLING APART AS IT DOES WITH
JUST A FEW HIGH CLOUDS REMAINING. OUT AHEAD OF THE FRONT THERE IS
SOME INSTABILITY STILL OVER FAR EASTERN OREGON WHICH COULD RESULT IN
SOME ISOLATED THUNDERSTORMS THIS EVENING MANLY EAST OF A LINE FROM
JOHN DAY TO LEWISTON. BEHIND THE FRONT AN INCREASING WEST TO EAST
GRADIENT IS BRING SOME COOLER AIR OVER THE CASCADES CREATING SOME
BREEZY CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES. THESE
WINDS WILL MOVE OUT INTO THE COLUMBIA BASIN THIS EVENING AND THEN
WINDS WILL DECREASE SOMEWHAT OVERNIGHT. FORECAST AREA WILL BE LEFT
UNDER A COOL NORTHWESTERLY FLOW WEDNESDAY AND THURSDAY AS A WEAK
TROUGH PATTERN REMAINS IN PLACE OVER THE PACIFIC NORTHWEST. COULD
SEE A FEW LINGERING SHOWERS THURSDAY AFTERNOON NEAR THE IDAHO
BORDER. LATE THURSDAY AND INTO FRIDAY THE TROUGH WILL DIP SOUTHWARD
AND DEVELOP INTO A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND
NORTHWEST. THIS WILL LEAD TO SOME INCREASED INSTABILITY FORMING
SHOWERS AND POSSIBLE THUNDERSTORMS FRIDAY AFTERNOON. FRIDAY WILL
ALSO BE THE COOLEST DAY WITH HIGHS IN THE LOWER BASIN ONLY CLIMBING
INTO THE LOWER 80S.

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...SEASONABLY STRONG
MID/UPPER LEVEL LOW PRESSURE SYSTEM WILL BE MOVING SOUTHEAST ACROSS
FORECAST AREA FRIDAY NIGHT. FROM SATURDAY OVERNIGHT UNTIL NOON ON
SATURDAY WRAP AROUND MOISTURE WILL INTERACT WILL THE EASTERN
MOUNTAINS AND THE EAST SLOPES OF THE CASCADES TO PRODUCE OROGRAPHIC
LIFT FOR A SLIGHT CHANCE OF SHOWERS OVER THE THOSE AREAS. OTHERWISE,
LEEWARD TERRAIN INFLUENCES PRODUCING DOWNSLOPE WINDS AND THUS
SINKING AIR WILL YIELD DRY CONDITIONS FOR LOWER TERRAIN THROUGH
FRIDAY NIGHT. SATURDAY AFTERNOON/EVENING COLDER AIR ALOFT ASSOCIATED
WITH THE LOW COMBINED WITH DAYTIME SURFACE HEATING WILL INCREASE
VERTICAL TEMPERATURE LAPSE RATES LEADING TO AN UNSTABLE AIR MASS
OVER THE BLUE MOUNTAINS, WALLOWA COUNTY AND OVER HIGHER TERRAIN IN
GRANT COUNTY. SATURDAY AFTERNOON/EVENING WILL THE UNSTABLE AREAS IN
THE EASTERN MOUNTAINS WILL BE UNDER A NORTHERLY FLOW ALOFT AS A
RESULT OF BEING ON THE WESTERN FLANK OF THE MID/UPPER LEVEL LOW, THE
CENTER OF WHICH WILL BE OVER IDAHO/WESTERN MONTANA. THUS ANY
THUNDERSTORMS THAT DO DEVELOP SATURDAY AFTERNOON/EVENING WILL BE
STEERED BY WINDS ALOFT TO MOVE FROM NORTH TO SOUTH, WHICH IS AN
UNUSUAL DIRECTION FOR THUNDERSTORMS MOVEMENT IN OUR REGION. BY
SUNDAY THE LOW WILL HAVE MOVED EASTERN MONTANA/WYOMING WHILE THE
EAST FLANK OF A MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE
NORTHEAST PACIFIC PUTS FORECAST AREA IN A NORTHWEST FLOW ALOFT,
WHICH WILL CREATE DRY CONDITIONS FOR MOST OF FORECAST AREA, EXCEPT
IN THE BLUE MOUNTAINS SUNDAY AFTERNOON/EARLY EVENING WHERE DAYTIME
SURFACE HEATING WILL YIELD MARGINAL INSTABILITY FOR A SLIGHT CHANCE
OF AFTERNOON/EARLY EVENING THUNDERSTORMS OVER THE BLUE MOUNTAINS AND
EASTERN GRANT COUNTY EASTWARD INTO IDAHO. ON MONDAY I KEPT A SLIGHT
CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS OVER THE
WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS, AND IN THE HIGHER
MOUNTAINS IN THE OCHOCO-JOHN DAY HIGHLANDS AS WELL AS THE STRAWBERRY
MOUNTAINS. ELSEWHERE ON MONDAY A NORTHWEST TO NORTH FLOW ALOFT WILL
PRODUCE SINKING MOTION AND DRY CONDITIONS. MONDAY NIGHT AND TUESDAY
THE PACIFIC NORTHWEST WILL BE UNDER A MID/UPPER LEVEL HIGH PRESSURE
RIDGE FOR DRY CONDITIONS.  POLAN

AVIATION...00Z TAFS...BROKEN TO OVERCAST HIGH CLOUDS ASSOCIATED
WITH AN AMORPHOUS WEAK UPPER LEVEL FRONT MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS AOA 20000 FT AGL. TIGHTER PRESSURE
GRADIENTS THROUGH THIS AFTERNOON INTO THIS EVENING WILL PRODUCE
WINDS OF 15-25 KTS INTO THIS EVENING, FOLLOWED BY WINDS DECREASING
LATE THIS EVENING AS PRESSURE GRADIENTS DECREASE WITH CLEARING SKIES
AFTER 03Z. HOWEVER, UPSLOPE WINDS ALOFT ALONG THE WEST FACING SLOPES
OF THE NORTHERN BLUE MOUNTAINS WILL GENERATE CLOUDS AT 7000-10000 FT
AGL THIS EVENING AT KPSC, KALW AND KPDT FOLLOWED BY CLEARING SKIES
BY 10Z-12Z/20TH.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  61  83  54  81 /  10   0   0  10
ALW  64  84  61  82 /  10   0   0  10
PSC  64  87  59  84 /  10   0   0  10
YKM  59  84  55  81 /   0   0   0   0
HRI  63  86  57  84 /  10   0   0   0
ELN  59  82  57  80 /   0   0   0  10
RDM  50  79  41  76 /  10   0   0   0
LGD  55  82  48  79 /  10  10  10  10
GCD  52  81  48  78 /  10  10  10  10
DLS  62  81  57  80 /  10   0   0   0

&&

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

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

$$

94






000
FXUS66 KPDT 192127
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 PM PDT TUE AUG 19 2014

.SHORT TERM...TONIGHT THROUGH FRIDAY...A DRY COLD FRONT CONTINUES
TO MOVE ACROSS THE FORECAST AREA TODAY FALLING APART AS IT DOES WITH
JUST A FEW HIGH CLOUDS REMAINING. OUT AHEAD OF THE FRONT THERE IS
SOME INSTABILITY STILL OVER FAR EASTERN OREGON WHICH COULD RESULT IN
SOME ISOLATED THUNDERSTORMS THIS EVENING MANLY EAST OF A LINE FROM
JOHN DAY TO LEWISTON. BEHIND THE FRONT AN INCREASING WEST TO EAST
GRADIENT IS BRING SOME COOLER AIR OVER THE CASCADES CREATING SOME
BREEZY CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES. THESE
WINDS WILL MOVE OUT INTO THE COLUMBIA BASIN THIS EVENING AND THEN
WINDS WILL DECREASE SOMEWHAT OVERNIGHT. FORECAST AREA WILL BE LEFT
UNDER A COOL NORTHWESTERLY FLOW WEDNESDAY AND THURSDAY AS A WEAK
TROUGH PATTERN REMAINS IN PLACE OVER THE PACIFIC NORTHWEST. COULD
SEE A FEW LINGERING SHOWERS THURSDAY AFTERNOON NEAR THE IDAHO
BORDER. LATE THURSDAY AND INTO FRIDAY THE TROUGH WILL DIP SOUTHWARD
AND DEVELOP INTO A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND
NORTHWEST. THIS WILL LEAD TO SOME INCREASED INSTABILITY FORMING
SHOWERS AND POSSIBLE THUNDERSTORMS FRIDAY AFTERNOON. FRIDAY WILL
ALSO BE THE COOLEST DAY WITH HIGHS IN THE LOWER BASIN ONLY CLIMBING
INTO THE LOWER 80S.

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...SEASONABLY STRONG
MID/UPPER LEVEL LOW PRESSURE SYSTEM WILL BE MOVING SOUTHEAST ACROSS
FORECAST AREA FRIDAY NIGHT. FROM SATURDAY OVERNIGHT UNTIL NOON ON
SATURDAY WRAP AROUND MOISTURE WILL INTERACT WILL THE EASTERN
MOUNTAINS AND THE EAST SLOPES OF THE CASCADES TO PRODUCE OROGRAPHIC
LIFT FOR A SLIGHT CHANCE OF SHOWERS OVER THE THOSE AREAS. OTHERWISE,
LEEWARD TERRAIN INFLUENCES PRODUCING DOWNSLOPE WINDS AND THUS
SINKING AIR WILL YIELD DRY CONDITIONS FOR LOWER TERRAIN THROUGH
FRIDAY NIGHT. SATURDAY AFTERNOON/EVENING COLDER AIR ALOFT ASSOCIATED
WITH THE LOW COMBINED WITH DAYTIME SURFACE HEATING WILL INCREASE
VERTICAL TEMPERATURE LAPSE RATES LEADING TO AN UNSTABLE AIR MASS
OVER THE BLUE MOUNTAINS, WALLOWA COUNTY AND OVER HIGHER TERRAIN IN
GRANT COUNTY. SATURDAY AFTERNOON/EVENING WILL THE UNSTABLE AREAS IN
THE EASTERN MOUNTAINS WILL BE UNDER A NORTHERLY FLOW ALOFT AS A
RESULT OF BEING ON THE WESTERN FLANK OF THE MID/UPPER LEVEL LOW, THE
CENTER OF WHICH WILL BE OVER IDAHO/WESTERN MONTANA. THUS ANY
THUNDERSTORMS THAT DO DEVELOP SATURDAY AFTERNOON/EVENING WILL BE
STEERED BY WINDS ALOFT TO MOVE FROM NORTH TO SOUTH, WHICH IS AN
UNUSUAL DIRECTION FOR THUNDERSTORMS MOVEMENT IN OUR REGION. BY
SUNDAY THE LOW WILL HAVE MOVED EASTERN MONTANA/WYOMING WHILE THE
EAST FLANK OF A MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE
NORTHEAST PACIFIC PUTS FORECAST AREA IN A NORTHWEST FLOW ALOFT,
WHICH WILL CREATE DRY CONDITIONS FOR MOST OF FORECAST AREA, EXCEPT
IN THE BLUE MOUNTAINS SUNDAY AFTERNOON/EARLY EVENING WHERE DAYTIME
SURFACE HEATING WILL YIELD MARGINAL INSTABILITY FOR A SLIGHT CHANCE
OF AFTERNOON/EARLY EVENING THUNDERSTORMS OVER THE BLUE MOUNTAINS AND
EASTERN GRANT COUNTY EASTWARD INTO IDAHO. ON MONDAY I KEPT A SLIGHT
CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS OVER THE
WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS, AND IN THE HIGHER
MOUNTAINS IN THE OCHOCO-JOHN DAY HIGHLANDS AS WELL AS THE STRAWBERRY
MOUNTAINS. ELSEWHERE ON MONDAY A NORTHWEST TO NORTH FLOW ALOFT WILL
PRODUCE SINKING MOTION AND DRY CONDITIONS. MONDAY NIGHT AND TUESDAY
THE PACIFIC NORTHWEST WILL BE UNDER A MID/UPPER LEVEL HIGH PRESSURE
RIDGE FOR DRY CONDITIONS.  POLAN



&&

.AVIATION...00Z TAFS...BROKEN TO OVERCAST HIGH CLOUDS ASSOCIATED
WITH AN AMORPHOUS WEAK UPPER LEVEL FRONT MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS AOA 20000 FT AGL. TIGHTER PRESSURE
GRADIENTS THROUGH THIS AFTERNOON INTO THIS EVENING WILL PRODUCE
WINDS OF 15-25 KTS INTO THIS EVENING, FOLLOWED BY WINDS DECREASING
LATE THIS EVENING AS PRESSURE GRADIENTS DECREASE WITH CLEARING SKIES
AFTER 03Z. HOWEVER, UPSLOPE WINDS ALOFT ALONG THE WEST FACING SLOPES
OF THE NORTHERN BLUE MOUNTAINS WILL GENERATE CLOUDS AT 7000-10000 FT
AGL THIS EVENING AT KPSC, KALW AND KPDT FOLLOWED BY CLEARING SKIES
BY 10Z-12Z/20TH.  POLAN


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  84  54  81 /  10   0   0  10
ALW  65  85  61  82 /  10   0   0  10
PSC  64  87  59  84 /  10   0   0  10
YKM  60  84  55  81 /  10   0   0   0
HRI  62  86  57  84 /  10   0   0   0
ELN  61  82  57  80 /  10   0   0  10
RDM  49  79  41  76 /  10   0   0   0
LGD  54  81  48  79 /  20  10  10  10
GCD  55  81  48  78 /  20  10  10  10
DLS  63  81  57  80 /  10   0   0   0

&&

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

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

$$

91/99/99










000
FXUS66 KPDT 192127
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 PM PDT TUE AUG 19 2014

.SHORT TERM...TONIGHT THROUGH FRIDAY...A DRY COLD FRONT CONTINUES
TO MOVE ACROSS THE FORECAST AREA TODAY FALLING APART AS IT DOES WITH
JUST A FEW HIGH CLOUDS REMAINING. OUT AHEAD OF THE FRONT THERE IS
SOME INSTABILITY STILL OVER FAR EASTERN OREGON WHICH COULD RESULT IN
SOME ISOLATED THUNDERSTORMS THIS EVENING MANLY EAST OF A LINE FROM
JOHN DAY TO LEWISTON. BEHIND THE FRONT AN INCREASING WEST TO EAST
GRADIENT IS BRING SOME COOLER AIR OVER THE CASCADES CREATING SOME
BREEZY CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES. THESE
WINDS WILL MOVE OUT INTO THE COLUMBIA BASIN THIS EVENING AND THEN
WINDS WILL DECREASE SOMEWHAT OVERNIGHT. FORECAST AREA WILL BE LEFT
UNDER A COOL NORTHWESTERLY FLOW WEDNESDAY AND THURSDAY AS A WEAK
TROUGH PATTERN REMAINS IN PLACE OVER THE PACIFIC NORTHWEST. COULD
SEE A FEW LINGERING SHOWERS THURSDAY AFTERNOON NEAR THE IDAHO
BORDER. LATE THURSDAY AND INTO FRIDAY THE TROUGH WILL DIP SOUTHWARD
AND DEVELOP INTO A CLOSED LOW PRESSURE SYSTEM OVER THE INLAND
NORTHWEST. THIS WILL LEAD TO SOME INCREASED INSTABILITY FORMING
SHOWERS AND POSSIBLE THUNDERSTORMS FRIDAY AFTERNOON. FRIDAY WILL
ALSO BE THE COOLEST DAY WITH HIGHS IN THE LOWER BASIN ONLY CLIMBING
INTO THE LOWER 80S.

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...SEASONABLY STRONG
MID/UPPER LEVEL LOW PRESSURE SYSTEM WILL BE MOVING SOUTHEAST ACROSS
FORECAST AREA FRIDAY NIGHT. FROM SATURDAY OVERNIGHT UNTIL NOON ON
SATURDAY WRAP AROUND MOISTURE WILL INTERACT WILL THE EASTERN
MOUNTAINS AND THE EAST SLOPES OF THE CASCADES TO PRODUCE OROGRAPHIC
LIFT FOR A SLIGHT CHANCE OF SHOWERS OVER THE THOSE AREAS. OTHERWISE,
LEEWARD TERRAIN INFLUENCES PRODUCING DOWNSLOPE WINDS AND THUS
SINKING AIR WILL YIELD DRY CONDITIONS FOR LOWER TERRAIN THROUGH
FRIDAY NIGHT. SATURDAY AFTERNOON/EVENING COLDER AIR ALOFT ASSOCIATED
WITH THE LOW COMBINED WITH DAYTIME SURFACE HEATING WILL INCREASE
VERTICAL TEMPERATURE LAPSE RATES LEADING TO AN UNSTABLE AIR MASS
OVER THE BLUE MOUNTAINS, WALLOWA COUNTY AND OVER HIGHER TERRAIN IN
GRANT COUNTY. SATURDAY AFTERNOON/EVENING WILL THE UNSTABLE AREAS IN
THE EASTERN MOUNTAINS WILL BE UNDER A NORTHERLY FLOW ALOFT AS A
RESULT OF BEING ON THE WESTERN FLANK OF THE MID/UPPER LEVEL LOW, THE
CENTER OF WHICH WILL BE OVER IDAHO/WESTERN MONTANA. THUS ANY
THUNDERSTORMS THAT DO DEVELOP SATURDAY AFTERNOON/EVENING WILL BE
STEERED BY WINDS ALOFT TO MOVE FROM NORTH TO SOUTH, WHICH IS AN
UNUSUAL DIRECTION FOR THUNDERSTORMS MOVEMENT IN OUR REGION. BY
SUNDAY THE LOW WILL HAVE MOVED EASTERN MONTANA/WYOMING WHILE THE
EAST FLANK OF A MID/UPPER LEVEL RIDGE OF HIGH PRESSURE IN THE
NORTHEAST PACIFIC PUTS FORECAST AREA IN A NORTHWEST FLOW ALOFT,
WHICH WILL CREATE DRY CONDITIONS FOR MOST OF FORECAST AREA, EXCEPT
IN THE BLUE MOUNTAINS SUNDAY AFTERNOON/EARLY EVENING WHERE DAYTIME
SURFACE HEATING WILL YIELD MARGINAL INSTABILITY FOR A SLIGHT CHANCE
OF AFTERNOON/EARLY EVENING THUNDERSTORMS OVER THE BLUE MOUNTAINS AND
EASTERN GRANT COUNTY EASTWARD INTO IDAHO. ON MONDAY I KEPT A SLIGHT
CHANCE OF AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS OVER THE
WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS, AND IN THE HIGHER
MOUNTAINS IN THE OCHOCO-JOHN DAY HIGHLANDS AS WELL AS THE STRAWBERRY
MOUNTAINS. ELSEWHERE ON MONDAY A NORTHWEST TO NORTH FLOW ALOFT WILL
PRODUCE SINKING MOTION AND DRY CONDITIONS. MONDAY NIGHT AND TUESDAY
THE PACIFIC NORTHWEST WILL BE UNDER A MID/UPPER LEVEL HIGH PRESSURE
RIDGE FOR DRY CONDITIONS.  POLAN



&&

.AVIATION...00Z TAFS...BROKEN TO OVERCAST HIGH CLOUDS ASSOCIATED
WITH AN AMORPHOUS WEAK UPPER LEVEL FRONT MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS AOA 20000 FT AGL. TIGHTER PRESSURE
GRADIENTS THROUGH THIS AFTERNOON INTO THIS EVENING WILL PRODUCE
WINDS OF 15-25 KTS INTO THIS EVENING, FOLLOWED BY WINDS DECREASING
LATE THIS EVENING AS PRESSURE GRADIENTS DECREASE WITH CLEARING SKIES
AFTER 03Z. HOWEVER, UPSLOPE WINDS ALOFT ALONG THE WEST FACING SLOPES
OF THE NORTHERN BLUE MOUNTAINS WILL GENERATE CLOUDS AT 7000-10000 FT
AGL THIS EVENING AT KPSC, KALW AND KPDT FOLLOWED BY CLEARING SKIES
BY 10Z-12Z/20TH.  POLAN


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  84  54  81 /  10   0   0  10
ALW  65  85  61  82 /  10   0   0  10
PSC  64  87  59  84 /  10   0   0  10
YKM  60  84  55  81 /  10   0   0   0
HRI  62  86  57  84 /  10   0   0   0
ELN  61  82  57  80 /  10   0   0  10
RDM  49  79  41  76 /  10   0   0   0
LGD  54  81  48  79 /  20  10  10  10
GCD  55  81  48  78 /  20  10  10  10
DLS  63  81  57  80 /  10   0   0   0

&&

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

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

$$

91/99/99









000
FXUS66 KPDT 191749 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1049 AM PDT TUE AUG 19 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...A COLD FRONT IS PASSING OVER THE
FORECAST AREA THIS MORNING BRINGING CLOUDS BUT NOT MUCH THREAT OF
PRECIPITATION. THE LEADING EDGE OF THE FRONT COULD INTERACT WITH
SOME WEAK INSTABILITY OVER FAR EASTERN OREGON TO GENERATE SOME
CONVECTIVE SHOWERS AND EVEN THUNDERSTORMS DURING THE AFTERNOON AND
EVENING HOURS. BEHIND THE FRONT THERE WILL BE INCREASING BREEZY
WESTERLY WINDS WHICH WILL BEGIN TO USHER IN SOME COOLER AIR.
TEMPERATURES WILL DROP SOME TODAY THEN EVEN MORE ON WEDNESDAY.

&&

.AVIATION...18Z TAFS...HIGH CLOUDS ASSOCIATED WITH AN AMORPHOUS WEAK
UPPER LEVEL FRONT MOVING ACROSS THE REGION THIS MORNING WITH
CEILINGS AOA 20000 FT AGL. INCREASING PRESSURE GRADIENTS THIS
MORNING THROUGH THIS AFTERNOON WILL PRODUCE WINDS STARTING OUT AT
5-10 KTS LATE THIS MORNING AND INCREASING TO 15-25 KTS THIS
AFTERNOON, THEN WINDS DECREASING LATE THIS EVENING WITH CLEARING
SKIES AFTER 03Z. HOWEVER, UPSLOPE WINDS ALOFT ALONG THE WEST FACING
SLOPES OF THE NORTHERN BLUE MOUNTAINS WILL GENERATE CLOUDS AT
7000-10000 FT AGL THIS EVENING AT KPSC, KALW AND KPDT FOLLOWED BY
CLEARING SKIES BY AROUND 10Z-12Z/20TH.  POLAN

&&

.PREVIOUS DISCUSSION... /ISSUED 410 AM PDT TUE AUG 19 2014/

SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  60  84  52 /  10  10   0   0
ALW  90  65  85  58 /  10  10   0   0
PSC  92  64  87  56 /  10  10   0   0
YKM  90  60  84  54 /  10   0   0   0
HRI  91  62  86  54 /  10  10   0   0
ELN  87  61  82  56 /  10   0   0   0
RDM  85  49  79  39 /  10  10   0   0
LGD  86  54  81  47 /  20  20  10  10
GCD  85  55  81  45 /  20  20  10  10
DLS  87  63  81  56 /  10  10   0   0

&&

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

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

$$

91/99/99








000
FXUS66 KPDT 191749 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1049 AM PDT TUE AUG 19 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...A COLD FRONT IS PASSING OVER THE
FORECAST AREA THIS MORNING BRINGING CLOUDS BUT NOT MUCH THREAT OF
PRECIPITATION. THE LEADING EDGE OF THE FRONT COULD INTERACT WITH
SOME WEAK INSTABILITY OVER FAR EASTERN OREGON TO GENERATE SOME
CONVECTIVE SHOWERS AND EVEN THUNDERSTORMS DURING THE AFTERNOON AND
EVENING HOURS. BEHIND THE FRONT THERE WILL BE INCREASING BREEZY
WESTERLY WINDS WHICH WILL BEGIN TO USHER IN SOME COOLER AIR.
TEMPERATURES WILL DROP SOME TODAY THEN EVEN MORE ON WEDNESDAY.

&&

.AVIATION...18Z TAFS...HIGH CLOUDS ASSOCIATED WITH AN AMORPHOUS WEAK
UPPER LEVEL FRONT MOVING ACROSS THE REGION THIS MORNING WITH
CEILINGS AOA 20000 FT AGL. INCREASING PRESSURE GRADIENTS THIS
MORNING THROUGH THIS AFTERNOON WILL PRODUCE WINDS STARTING OUT AT
5-10 KTS LATE THIS MORNING AND INCREASING TO 15-25 KTS THIS
AFTERNOON, THEN WINDS DECREASING LATE THIS EVENING WITH CLEARING
SKIES AFTER 03Z. HOWEVER, UPSLOPE WINDS ALOFT ALONG THE WEST FACING
SLOPES OF THE NORTHERN BLUE MOUNTAINS WILL GENERATE CLOUDS AT
7000-10000 FT AGL THIS EVENING AT KPSC, KALW AND KPDT FOLLOWED BY
CLEARING SKIES BY AROUND 10Z-12Z/20TH.  POLAN

&&

.PREVIOUS DISCUSSION... /ISSUED 410 AM PDT TUE AUG 19 2014/

SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  60  84  52 /  10  10   0   0
ALW  90  65  85  58 /  10  10   0   0
PSC  92  64  87  56 /  10  10   0   0
YKM  90  60  84  54 /  10   0   0   0
HRI  91  62  86  54 /  10  10   0   0
ELN  87  61  82  56 /  10   0   0   0
RDM  85  49  79  39 /  10  10   0   0
LGD  86  54  81  47 /  20  20  10  10
GCD  85  55  81  45 /  20  20  10  10
DLS  87  63  81  56 /  10  10   0   0

&&

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

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

$$

91/99/99







000
FXUS66 KPDT 191520
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
820 AM PDT TUE AUG 19 2014

.SHORT TERM...TODAY AND TONIGHT...A COLD FRONT IS PASSING OVER THE
FORECAST AREA THIS MORNING BRINGING CLOUDS BUT NOT MUCH THREAT OF
PRECIPITATION. THE LEADING EDGE OF THE FRONT COULD INTERACT WITH
SOME WEAK INSTABILITY OVER FAR EASTERN OREGON TO GENERATE SOME
CONVECTIVE SHOWERS AND EVEN THUNDERSTORMS DURING THE AFTERNOON AND
EVENING HOURS. BEHIND THE FRONT THERE WILL BE INCREASING BREEZY
WESTERLY WINDS WHICH WILL BEGIN TO USHER IN SOME COOLER AIR.
TEMPERATURES WILL DROP SOME TODAY THEN EVEN MORE ON WEDNESDAY.


&&

.PREV DISC... /ISSUED 410 AM PDT TUE AUG 19 2014/

SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

AVIATION...12Z TAFS...WEAK FRONTAL BAND MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS 120-200. WINDS 5-10KT THIS MORNING
INCREASING TO 15-25KT THIS AFTERNOON...THEN DECREASING AND CLEARING
AFT 03Z. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  60  84  52 /  10  10   0   0
ALW  90  65  85  58 /  10  10   0   0
PSC  92  64  87  56 /  10  10   0   0
YKM  90  60  84  54 /  10   0   0   0
HRI  91  62  86  54 /  10  10   0   0
ELN  87  61  82  56 /  10   0   0   0
RDM  85  49  79  39 /  10  10   0   0
LGD  86  54  81  47 /  20  20  10  10
GCD  85  55  81  45 /  20  20  10  10
DLS  87  63  81  56 /  10  10   0   0

&&

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

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

$$

91/99/99










000
FXUS66 KPDT 191520
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
820 AM PDT TUE AUG 19 2014

.SHORT TERM...TODAY AND TONIGHT...A COLD FRONT IS PASSING OVER THE
FORECAST AREA THIS MORNING BRINGING CLOUDS BUT NOT MUCH THREAT OF
PRECIPITATION. THE LEADING EDGE OF THE FRONT COULD INTERACT WITH
SOME WEAK INSTABILITY OVER FAR EASTERN OREGON TO GENERATE SOME
CONVECTIVE SHOWERS AND EVEN THUNDERSTORMS DURING THE AFTERNOON AND
EVENING HOURS. BEHIND THE FRONT THERE WILL BE INCREASING BREEZY
WESTERLY WINDS WHICH WILL BEGIN TO USHER IN SOME COOLER AIR.
TEMPERATURES WILL DROP SOME TODAY THEN EVEN MORE ON WEDNESDAY.


&&

.PREV DISC... /ISSUED 410 AM PDT TUE AUG 19 2014/

SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

AVIATION...12Z TAFS...WEAK FRONTAL BAND MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS 120-200. WINDS 5-10KT THIS MORNING
INCREASING TO 15-25KT THIS AFTERNOON...THEN DECREASING AND CLEARING
AFT 03Z. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  60  84  52 /  10  10   0   0
ALW  90  65  85  58 /  10  10   0   0
PSC  92  64  87  56 /  10  10   0   0
YKM  90  60  84  54 /  10   0   0   0
HRI  91  62  86  54 /  10  10   0   0
ELN  87  61  82  56 /  10   0   0   0
RDM  85  49  79  39 /  10  10   0   0
LGD  86  54  81  47 /  20  20  10  10
GCD  85  55  81  45 /  20  20  10  10
DLS  87  63  81  56 /  10  10   0   0

&&

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

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

$$

91/99/99









000
FXUS66 KPDT 191111 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
410 AM PDT TUE AUG 19 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

.LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

&&

.AVIATION...12Z TAFS...WEAK FRONTAL BAND MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS 120-200. WINDS 5-10KT THIS MORNING
INCREASING TO 15-25KT THIS AFTERNOON...THEN DECREASING AND CLEARING
AFT 03Z. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  58  83  52 /  10  20   0   0
ALW  91  63  85  58 /  10  20   0   0
PSC  93  61  87  56 /  10  10   0   0
YKM  90  58  84  54 /  20   0   0   0
HRI  92  60  86  54 /  10  10   0   0
ELN  87  60  82  56 /  20   0   0   0
RDM  88  47  81  39 /  10  10   0   0
LGD  87  54  81  47 /  10  10  10  10
GCD  89  53  83  45 /  20  20  10  10
DLS  87  61  80  56 /  10  10   0   0

&&

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

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

$$

90/76/76







000
FXUS66 KPDT 191111 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
410 AM PDT TUE AUG 19 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

.LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

&&

.AVIATION...12Z TAFS...WEAK FRONTAL BAND MOVING ACROSS THE REGION
THIS MORNING WITH CEILINGS 120-200. WINDS 5-10KT THIS MORNING
INCREASING TO 15-25KT THIS AFTERNOON...THEN DECREASING AND CLEARING
AFT 03Z. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  58  83  52 /  10  20   0   0
ALW  91  63  85  58 /  10  20   0   0
PSC  93  61  87  56 /  10  10   0   0
YKM  90  58  84  54 /  20   0   0   0
HRI  92  60  86  54 /  10  10   0   0
ELN  87  60  82  56 /  20   0   0   0
RDM  88  47  81  39 /  10  10   0   0
LGD  87  54  81  47 /  10  10  10  10
GCD  89  53  83  45 /  20  20  10  10
DLS  87  61  80  56 /  10  10   0   0

&&

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

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

$$

90/76/76








000
FXUS66 KPDT 190959
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
259 AM PDT TUE AUG 19 2014

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT...A PACIFIC TROUGH WILL
MOVE ACROSS THE PACIFIC NORTHWEST TODAY. THE INITIAL BAND OF MID AND
HIGH LEVEL MOISTURE IS CURRENTLY MOVING ACROSS THE WASHINGTON
CASCADE CREST, AND MAY CAUSE A FEW SHOWERS NEAR THE CENTRAL CASCADE
CREST THIS MORNING. A SECOND BAND OF MID LEVEL MOISTURE AHEAD OF THE
TROUGH AXIS SHOULD SWING ACROSS THE AREA FROM LATE MORNING INTO THIS
EVENING. ELEVATED INSTABILITY WITH THIS AREA COULD AT LEAST CAUSE
ISOLATED SHOWERS FROM THE WASHINGTON CASCADE CREST EAST INTO THE
YAKIMA AND KITTITAS VALLEYS LATE MORNING AND AFTERNOON. THIS AREA
THEN LOOKS TO AFFECT THE NORTHERN BLUE MOUNTAINS AND THEIR ADJACENT
FOOTHILLS THIS EVENING. INSTABILITY LOOKS ONLY STRONG ENOUGH FOR
SHOWERS, BUT THUNDER MAY NOT BE COMPLETELY OUT OF THE QUESTION. FOR
NOW WILL GO WITH SHOWERS. THE AREA THAT COULD SEE A FEW
THUNDERSTORMS IS FROM SOUTHERN WALLOWA COUNTY SOUTHWEST INTO GRANT
COUNTY. THIS AREA WILL HAVE THE LEADING BAND OF MOISTURE OVERHEAD
AND MOVING EAST AT THE TIME OF MAXIMUM HEATING THIS AFTERNOON AND
EARLY EVENING. SOME SLOP OVER PRECIP MAY CONTINUE OVER EXTREME
WESTERN KITTITAS COUNTY OVERNIGHT TONIGHT, OTHERWISE THE AREA SHOULD
DRY OUT. THE REGION WILL BECOME INCREASINGLY INFLUENCED BY A
GENERALLY DRY NORTHWEST FLOW WEDNESDAY AND WEDNESDAY NIGHT. THUS
WILL CONTINUE THE CURRENT DRY FORECASTS DURING THIS PERIOD. WINDS
WILL BE BREEZY THIS AFTERNOON AND EVENING ACROSS MUCH OF THE AREA
DUE TO INCREASING HIGH SURFACE PRESSURE WEST OF THE CASCADES. BREEZY
CONDITIONS WILL CONTINUE THROUGH THE CASCADE GAPS INTO PORTIONS OF
THE BASIN ON WEDNESDAY. HIGH TEMPS WILL COOL 5-8 DEGREES WEDNESDAY
AFTERNOON VERSUS THIS AFTERNOON. 90

.LONG TERM...THURSDAY THROUGH MONDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST THURSDAY AND FRIDAY. AN UPPER LEVEL LOW
PASSING THROUGH NORTHEAST WASHINGTON FRIDAY WILL BRING ENOUGH
MOISTURE AND INSTABILITY TO TRIGGER A FEW SHOWERS ALONG THE BLUE
MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES. AN UPPER
LEVEL RIDGE WILL BUILD OFF THE PACIFIC COAST FRIDAY NIGHT PLACING
THE AREA UNDER NORTHWESTERLY FLOW DURING THE REST OF THE LONG TERM
PERIOD. A SHORTWAVE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SATURDAY. INSTABILITY AND LINGERING MOISTURE MAY TRIGGER A FEW
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES SATURDAY AND SUNDAY AFTERNOON. BY
MONDAY...A DRYING TREND WILL BEGIN AS SUBSIDENCE ASSOCIATED WITH THE
RIDGE BUILDS INTO THE PACIFIC NORTHWEST. HIGH TEMPERATURES WILL BE
IN THE MID 70S TO MID 80S THURSDAY AND FRIDAY...WITH ABOUT 5 DEGREES
OF WARMING BY MONDAY. COONFIELD

&&

.AVIATION...PREVIOUS DISCUSSION...06Z TAFS...WEAK FRONTAL BAND
MOVING ACROSS THE REGION LATER TONIGHT INTO TUESDAY WITH CEILINGS
120-200. WINDS 5-10KT TONIGHT INCREASING TO 15-25KT TUESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  89  58  83  52 /  10  20   0   0
ALW  91  63  85  58 /  10  20   0   0
PSC  93  61  87  56 /  10  10   0   0
YKM  90  58  84  54 /  20   0   0   0
HRI  92  60  86  54 /  10  10   0   0
ELN  87  60  82  56 /  20   0   0   0
RDM  88  47  81  39 /  10  10   0   0
LGD  87  54  81  47 /  10  10  10  10
GCD  89  53  83  45 /  20  20  10  10
DLS  87  61  80  56 /  10  10   0   0

&&

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

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

$$

90/76/76










000
FXUS66 KPDT 190542
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1030 PM PDT MON AUG 18 2014

.SHORT TERM...UPPER LOW OVER NORTHERN CALIFORNIA GENERATED A FEW
THUNDERSTORMS OVER NORTHEAST OREGON EARLY THIS EVENING. EXPECT THESE
TO DIMINISH AFTER SUNSET. OTHERWISE MAINLY CLEAR SKIES EXPECTED
OVERNIGHT EXCEPT FOR WASHINGTON CASCADES WHERE SOME CLOUDS WILL BE
MOVING IN WITH THE NEXT FRONTAL BOUNDARY. THIS FRONT MOVES ACROSS
THE REGION TUESDAY WITH PARTLY CLOUDY SKIES. WEST WINDS WILL BE
INCREASING BECOMING BREEZY IN MANY LOCATIONS BY AFTERNOON. A FEW
THUNDERSTORMS ARE POSSIBLE OVER THE NORTHEAST OREGON MOUNTAINS IN
THE AFTERNOON.  94

.AVIATION...06Z TAFS. WEAK FRONTAL BAND MOVING ACROSS THE REGION
LATER TONIGHT INTO TUESDAY WITH CEILINGS 120-200. WINDS 5-10KT
TONIGHT INCREASING TO 15-25KT TUESDAY.

&&

.PREV DISC... /ISSUED 306 PM PDT MON AUG 18 2014/

SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  89  59  84 /   0  10  10   0
ALW  66  90  65  84 /   0  10  10   0
PSC  63  93  64  87 /   0   0   0   0
YKM  63  90  60  85 /   0   0   0   0
HRI  63  91  62  87 /   0  10  10   0
ELN  60  86  60  84 /   0   0   0   0
RDM  54  86  48  79 /  10  10  10   0
LGD  54  86  54  82 /  10  10  10  10
GCD  54  86  55  81 /  20  20  20  10
DLS  66  88  62  82 /   0  10  10   0

&&

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

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

$$

94/








000
FXUS66 KPDT 190542
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1030 PM PDT MON AUG 18 2014

.SHORT TERM...UPPER LOW OVER NORTHERN CALIFORNIA GENERATED A FEW
THUNDERSTORMS OVER NORTHEAST OREGON EARLY THIS EVENING. EXPECT THESE
TO DIMINISH AFTER SUNSET. OTHERWISE MAINLY CLEAR SKIES EXPECTED
OVERNIGHT EXCEPT FOR WASHINGTON CASCADES WHERE SOME CLOUDS WILL BE
MOVING IN WITH THE NEXT FRONTAL BOUNDARY. THIS FRONT MOVES ACROSS
THE REGION TUESDAY WITH PARTLY CLOUDY SKIES. WEST WINDS WILL BE
INCREASING BECOMING BREEZY IN MANY LOCATIONS BY AFTERNOON. A FEW
THUNDERSTORMS ARE POSSIBLE OVER THE NORTHEAST OREGON MOUNTAINS IN
THE AFTERNOON.  94

.AVIATION...06Z TAFS. WEAK FRONTAL BAND MOVING ACROSS THE REGION
LATER TONIGHT INTO TUESDAY WITH CEILINGS 120-200. WINDS 5-10KT
TONIGHT INCREASING TO 15-25KT TUESDAY.

&&

.PREV DISC... /ISSUED 306 PM PDT MON AUG 18 2014/

SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  89  59  84 /   0  10  10   0
ALW  66  90  65  84 /   0  10  10   0
PSC  63  93  64  87 /   0   0   0   0
YKM  63  90  60  85 /   0   0   0   0
HRI  63  91  62  87 /   0  10  10   0
ELN  60  86  60  84 /   0   0   0   0
RDM  54  86  48  79 /  10  10  10   0
LGD  54  86  54  82 /  10  10  10  10
GCD  54  86  55  81 /  20  20  20  10
DLS  66  88  62  82 /   0  10  10   0

&&

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

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

$$

94/







000
FXUS66 KPDT 190249
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
744 PM PDT MON AUG 18 2014

.SHORT TERM...UPPER LOW OVER NORTHERN CALIFORNIA GENERATED A FEW
THUNDERSTORMS OVER NORTHEAST OREGON EARLY THIS EVENING. EXPECT THESE
TO DIMINISH AFTER SUNSET. OTHERWISE MAINLY CLEAR SKIES EXPECTED
OVERNIGHT EXCEPT FOR WASHINGTON CASCADES WHERE SOME CLOUDS WILL BE
MOVING IN WITH THE NEXT FRONTAL BOUNDARY. THIS FRONT MOVES ACROSS
THE REGION TUESDAY WITH PARTLY CLOUDY SKIES. WEST WINDS WILL BE
INCREASING BECOMING BREEZY IN MANY LOCATIONS BY AFTERNOON. A FEW
THUNDERSTORMS ARE POSSIBLE OVER THE NORTHEAST OREGON MOUNTAINS IN
THE AFTERNOON.  94

&&

.PREV DISC... /ISSUED 306 PM PDT MON AUG 18 2014/

SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA

AVIATION...00Z TAFS...LINGERING MOISTURE FROM EXITING UPPER LOW MAY
CAUSE SOME VCNTY THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM BTWN
19/01Z TO 19/06Z NEAR AND TO THE SOUTH OF KBDN AND KRDM.
OTHERWISE...ANOTHER WEATHER SYSTEM WITH A COLD FRONT WILL BRING
INCREASING CIG BTWN 12K TO 15K FT AGL AFT 19/12Z ALONG THE CASCADES
PROGRESSING EAST ACROSS NE OR AND SE WA BY ABOUT 19/18Z.  WINDS WILL
BE AOB 12 KTS THRU 19/16Z INCREASING TO BTWN 10 TO 15 KTS GUSTING
TO 20 KTS...WITH 20 KTS GUSTING TO 30 KTS AT KDLS.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  89  59  84 /   0  10  10   0
ALW  66  90  65  84 /   0  10  10   0
PSC  63  93  64  87 /   0   0   0   0
YKM  63  90  60  85 /   0   0   0   0
HRI  63  91  62  87 /   0  10  10   0
ELN  60  86  60  84 /   0   0   0   0
RDM  54  86  48  79 /  10  10  10   0
LGD  54  86  54  82 /  10  10  10  10
GCD  54  86  55  81 /  20  20  20  10
DLS  66  88  62  82 /   0  10  10   0

&&

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

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

$$

94/







000
FXUS66 KPDT 190249
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
744 PM PDT MON AUG 18 2014

.SHORT TERM...UPPER LOW OVER NORTHERN CALIFORNIA GENERATED A FEW
THUNDERSTORMS OVER NORTHEAST OREGON EARLY THIS EVENING. EXPECT THESE
TO DIMINISH AFTER SUNSET. OTHERWISE MAINLY CLEAR SKIES EXPECTED
OVERNIGHT EXCEPT FOR WASHINGTON CASCADES WHERE SOME CLOUDS WILL BE
MOVING IN WITH THE NEXT FRONTAL BOUNDARY. THIS FRONT MOVES ACROSS
THE REGION TUESDAY WITH PARTLY CLOUDY SKIES. WEST WINDS WILL BE
INCREASING BECOMING BREEZY IN MANY LOCATIONS BY AFTERNOON. A FEW
THUNDERSTORMS ARE POSSIBLE OVER THE NORTHEAST OREGON MOUNTAINS IN
THE AFTERNOON.  94

&&

.PREV DISC... /ISSUED 306 PM PDT MON AUG 18 2014/

SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA

AVIATION...00Z TAFS...LINGERING MOISTURE FROM EXITING UPPER LOW MAY
CAUSE SOME VCNTY THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM BTWN
19/01Z TO 19/06Z NEAR AND TO THE SOUTH OF KBDN AND KRDM.
OTHERWISE...ANOTHER WEATHER SYSTEM WITH A COLD FRONT WILL BRING
INCREASING CIG BTWN 12K TO 15K FT AGL AFT 19/12Z ALONG THE CASCADES
PROGRESSING EAST ACROSS NE OR AND SE WA BY ABOUT 19/18Z.  WINDS WILL
BE AOB 12 KTS THRU 19/16Z INCREASING TO BTWN 10 TO 15 KTS GUSTING
TO 20 KTS...WITH 20 KTS GUSTING TO 30 KTS AT KDLS.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  89  59  84 /   0  10  10   0
ALW  66  90  65  84 /   0  10  10   0
PSC  63  93  64  87 /   0   0   0   0
YKM  63  90  60  85 /   0   0   0   0
HRI  63  91  62  87 /   0  10  10   0
ELN  60  86  60  84 /   0   0   0   0
RDM  54  86  48  79 /  10  10  10   0
LGD  54  86  54  82 /  10  10  10  10
GCD  54  86  55  81 /  20  20  20  10
DLS  66  88  62  82 /   0  10  10   0

&&

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

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

$$

94/






000
FXUS66 KPDT 182207 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
306 PM PDT MON AUG 18 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

.LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA


&&

.AVIATION...00Z TAFS...LINGERING MOISTURE FROM EXITING UPPER LOW MAY
CAUSE SOME VCNTY THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM BTWN
19/01Z TO 19/06Z NEAR AND TO THE SOUTH OF KBDN AND KRDM.
OTHERWISE...ANOTHER WEATHER SYSTEM WITH A COLD FRONT WILL BRING
INCREASING CIG BTWN 12K TO 15K FT AGL AFT 19/12Z ALONG THE CASCADES
PROGRESSING EAST ACROSS NE OR AND SE WA BY ABOUT 19/18Z.  WINDS WILL
BE AOB 12 KTS THRU 19/16Z INCREASING TO BTWN 10 TO 15 KTS GUSTING
TO 20 KTS...WITH 20 KTS GUSTING TO 30 KTS AT KDLS.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  89  59  84 /   0  10  10   0
ALW  68  89  65  84 /   0  10  10   0
PSC  64  92  64  87 /   0   0   0   0
YKM  64  90  60  85 /   0   0   0   0
HRI  64  91  62  87 /   0  10  10   0
ELN  61  87  60  84 /   0   0   0   0
RDM  55  86  48  79 /  10  10  10   0
LGD  56  87  54  82 /  10  10  10  10
GCD  60  86  55  81 /  20  20  20  10
DLS  68  88  62  82 /   0  10  10   0

&&

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

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

$$

91/98/98







000
FXUS66 KPDT 182207 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
306 PM PDT MON AUG 18 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

.LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA


&&

.AVIATION...00Z TAFS...LINGERING MOISTURE FROM EXITING UPPER LOW MAY
CAUSE SOME VCNTY THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM BTWN
19/01Z TO 19/06Z NEAR AND TO THE SOUTH OF KBDN AND KRDM.
OTHERWISE...ANOTHER WEATHER SYSTEM WITH A COLD FRONT WILL BRING
INCREASING CIG BTWN 12K TO 15K FT AGL AFT 19/12Z ALONG THE CASCADES
PROGRESSING EAST ACROSS NE OR AND SE WA BY ABOUT 19/18Z.  WINDS WILL
BE AOB 12 KTS THRU 19/16Z INCREASING TO BTWN 10 TO 15 KTS GUSTING
TO 20 KTS...WITH 20 KTS GUSTING TO 30 KTS AT KDLS.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  89  59  84 /   0  10  10   0
ALW  68  89  65  84 /   0  10  10   0
PSC  64  92  64  87 /   0   0   0   0
YKM  64  90  60  85 /   0   0   0   0
HRI  64  91  62  87 /   0  10  10   0
ELN  61  87  60  84 /   0   0   0   0
RDM  55  86  48  79 /  10  10  10   0
LGD  56  87  54  82 /  10  10  10  10
GCD  60  86  55  81 /  20  20  20  10
DLS  68  88  62  82 /   0  10  10   0

&&

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

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

$$

91/98/98








000
FXUS66 KPDT 182125
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 PM PDT MON AUG 18 2014

.SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

.LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...AN EXITING UPPER LOW
WILL ALLOW FOR A FEW THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM
BTWN 19/01Z AND 19/06Z WITH BEST CHANCE JUST SOUTH OF KBDN.
OTHERWISE...ANOTHER WEATHER SYSTEM WILL BRING INCREASING CIG AOA 15K
FT AGL AFT 19/12Z FROM KPSC WESTWARD DUE TO AN APPROACHING FRONT.
WINDS WILL BE AOB 12 KTS...EXCEPT AT KDLS WHERE GUSTS COULD APPROACH
20 KTS DURING THE AFTERNOON AND AFT 19/16Z.  BIEDA


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  89  59  84 /   0  10  10   0
ALW  68  89  65  84 /   0  10  10   0
PSC  64  92  64  87 /   0   0   0   0
YKM  64  90  60  85 /   0   0   0   0
HRI  64  91  62  87 /   0  10  10   0
ELN  61  87  60  84 /   0   0   0   0
RDM  55  86  48  79 /  10  10  10   0
LGD  56  87  54  82 /  10  10  10  10
GCD  60  86  55  81 /  20  20  20  10
DLS  68  88  62  82 /   0  10  10   0

&&

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

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

$$

91/98/98










000
FXUS66 KPDT 182125
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 PM PDT MON AUG 18 2014

.SHORT TERM...TONIGHT THROUGH THURSDAY...UPPER LEVEL LOW PRESSURE
ALONG THE NORTHERN CALIFORNIA COAST WILL CONTINUE TO PROVIDE A
SLIGHT THREAT OF CONVECTION FOR CENTRAL OREGON THROUGH THIS EVENING.
NEXT SYSTEM TO IMPACT THE AREA IS COMING ONTO THE CANADIAN COAST.
THIS SYSTEM WILL DRAG A DRY COLD FRONT ACROSS THE FORECAST AREA ON
TUESDAY. EXPECT A 5 TO 10 DEGREE COOLING ACROSS THE FORECAST AREA
AND THE INTRODUCTION OF SOME BREEZY WEST WINDS DURING THE AFTERNOON
AND EVENING. SOME LINGERING MOISTURE FROM THE CALIFORNIA LOW MAY
INTERACT WITH THE COLD FRONT OVER THE FAR EAST AND SOUTHEAST PORTION
OF THE FORECAST AREA FOR A SLIGHT THUNDERSTORM THREAT..OTHERWISE
LOOKING AT A DRY FORECAST. WE WILL CONTINUE TO STAY UNDER A DRY AND
COOLER NORTHWEST FLOW WEDNESDAY AND THURSDAY WITH TEMPERATURES
DROPPING A FEW MORE DEGREES.

.LONG TERM...FRIDAY MORNING THROUGH MONDAY NIGHT...AN UPPER LEVEL
RIDGE WILL START TO BUILD OFF THE PACIFIC COAST PLACING THE AREA
UNDER NORTHWESTERLY FLOW DURING THE PERIOD.  AN UPPER LEVEL LOW
PASSING THROUGH TO THE NORTH AND EAST OF THE AREA ON FRIDAY WILL
BRING ENOUGH MOISTURE TO CAUSE A SLIGHT CHANCE OF SHOWERS ALONG THE
BLUE MOUNTAINS AND THE EAST SLOPES OF THE WASHINGTON CASCADES FRIDAY
AFTERNOON AND EARLY EVENING.  INCREASED NORTHWESTERLY WINDS WILL
ACCOMPANY AND FOLLOW THE SYSTEM FRIDAY AFTERNOON...THOUGH WINDS WILL
ONLY BE AROUND 10 TO 15 KTS.  ANOTHER SHORTWAVE TROUGH WILL FOLLOW
LATE SATURDAY NIGHT INTO SUNDAY AND WILL WORK OFF OF THE LINGERING
MOISTURE IN THE AREA FROM THE PRIOR SYSTEM.  A SLIGHT CHANCE OF
HIGHER ELEVATION SHOWERS...MAINLY OVER THE BLUE MOUNTAINS AND EAST
SLOPES OF THE WASHINGTON CASCADES ONCE MORE...WILL OCCUR SATURDAY
AND SUNDAY AFTERNOON.  BY MONDAY...A DRYING TREND WILL START TO TAKE
PLACE AS THE RIDGE OFF THE PACIFIC COAST CONTINUES TO BUILD IN.
HIGH TEMPERATURES WILL BE IN THE MID 70S TO MID 80S ON FRIDAY...WITH
ABOUT 5 DEGREES OF WARMING BY MONDAY.  BIEDA


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...AN EXITING UPPER LOW
WILL ALLOW FOR A FEW THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM
BTWN 19/01Z AND 19/06Z WITH BEST CHANCE JUST SOUTH OF KBDN.
OTHERWISE...ANOTHER WEATHER SYSTEM WILL BRING INCREASING CIG AOA 15K
FT AGL AFT 19/12Z FROM KPSC WESTWARD DUE TO AN APPROACHING FRONT.
WINDS WILL BE AOB 12 KTS...EXCEPT AT KDLS WHERE GUSTS COULD APPROACH
20 KTS DURING THE AFTERNOON AND AFT 19/16Z.  BIEDA


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  89  59  84 /   0  10  10   0
ALW  68  89  65  84 /   0  10  10   0
PSC  64  92  64  87 /   0   0   0   0
YKM  64  90  60  85 /   0   0   0   0
HRI  64  91  62  87 /   0  10  10   0
ELN  61  87  60  84 /   0   0   0   0
RDM  55  86  48  79 /  10  10  10   0
LGD  56  87  54  82 /  10  10  10  10
GCD  60  86  55  81 /  20  20  20  10
DLS  68  88  62  82 /   0  10  10   0

&&

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

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

$$

91/98/98









000
FXUS66 KPDT 181720 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1020 AM PDT MON AUG 18 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH TUESDAY...A SMALL UPPER LEVEL LOW OVER
SOUTHWEST OREGON THIS MORNING WHICH WAS RESPONSIBLE FOR LAST NIGHTS
CONVECTION WILL MOVE FURTHER SOUTHWARD TODAY BUT COULD LEAVE ENOUGH
INSTABILITY TO PRODUCE A FEW THUNDERSTORMS OVER CENTRAL OREGON LATE
THIS AFTERNOON AND EVENING. AS IT MOVES SOUTH THE BETTER DYNAMICS
FOR INSTIGATING CONVECTION WILL ALSO MOVE SOUTHWARD SO ONLY
EXPECTING SLIGHT CHANCE OR ISOLATED THUNDERSTORMS FOR CENTRAL
OREGON. OTHERWISE HIGH PRESSURE OVER THE AREA WILL PROVIDE MOSTLY
SUNNY SKIES AND HOT TEMPERATURES. A FAST MOVING WEATHER SYSTEM IS
EXPECTED TO CLIP THE PACIFIC NORTHWEST ON TUESDAY. THIS WILL USHER
IN BREEZY CONDITIONS AND BEGIN COOLING TEMPERATURES. IT WILL ALSO
PUSH ANY CONVECTION THREAT SOUTH AND EAST LIMITING POSSIBLE
THUNDERSTORMS TO THE MOUNTAINS OVER EASTERN GRANT AND SOUTHERN
WALLOWA COUNTIES.

.AVIATION...18Z TAFS...AN EXITING UPPER LOW WILL ALLOW FOR A FEW
THUNDERSTORMS WITH CIG AOA 7K FT AGL TO FORM BTWN 19/01Z AND 19/06Z
WITH BEST CHANCE JUST SOUTH OF KBDN.  OTHERWISE...ANOTHER WEATHER
SYSTEM WILL BRING INCREASING CIG AOA 15K FT AGL AFT 19/12Z FROM KPSC
WESTWARD DUE TO AN APPROACHING FRONT.  WINDS WILL BE AOB 12
KTS...EXCEPT AT KDLS WHERE GUSTS COULD APPROACH 20 KTS DURING THE
AFTERNOON AND AFT 19/16Z.  BIEDA

&&

.PREV DISC... /ISSUED 407 AM PDT MON AUG 18 2014/

SHORT TERM...TODAY THROUGH TUESDAY NIGHT...AN UPPER LOW OFF THE
NORTHWEST OREGON COAST IS IN THE PROCESS OF STRETCHING SOUTHWARD
CAUSING A NEW LOW TO DEVELOP ALONG THE EXTREME SOUTHWEST OREGON
COAST. A WEAK WAVE ASSOCIATED WITH THE THUNDERSTORMS OVER CENTRAL
OREGON LAST EVENING CONTINUES TO MOVE NORTH WHILE SHEARING EAST AND
WEST. DEBRIS CLOUDINESS ASSOCIATED WITH THIS WAVE CONTINUES TO
DISSIPATE. ANOTHER WEAK WAVE IS ALSO MOVING INTO SOUTHEAST OREGON.
THIS WAVE SHOULD REACH SOUTHWEST IDAHO BY DAYBREAK. THE UPPER LOW
DEVELOPING NEAR SOUTHWEST OREGON WILL BE THE MAIN CONCERN TODAY.
THIS LOW WILL FOCUS SHOWER AND THUNDERSTORM DEVELOPMENT OVER
SOUTH-CENTRAL OREGON, BUT LINGERING MOISTURE WRAPPING TOWARDS THE
LOW AND DAYTIME HEATING WILL RESULT IN SHOWERS AND STORMS DEVELOPING
AGAIN OVER CENTRAL AND EAST-CENTRAL OREGON. WESTERLY FLOW WILL
DEVELOP ACROSS NORTHEAST OREGON AND SOUTHEAST WASHINGTON TODAY. THIS
FLOW WILL RESULT IN THESE AREAS SEEING INCREASING STABILITY AND DRY
CONDITIONS. WILL KEEP SOME MENTION OF STORMS OVER THE WALLOWA
MOUNTAINS DUE TO UPSLOPE WIND CONVERGENCE, BUT THE AIR MASS HERE MAY
ALSO BECOME TOO DRY TO SUPPORT STORM DEVELOPMENT. AN UPPER TROUGH
MOVING THROUGH THE GULF OF ALASKA WILL SWING ACROSS THE REGION
TUESDAY. THIS TROUGH WILL PUSH A COOL FRONT ACROSS THE REGION AS
WELL, RESULTING IN WINDS INCREASING ACROSS THE AREA IN THE AFTERNOON
AND EVENING. PRECIPITATION WITH THIS SYSTEM LOOKS LIMITED AT THIS
TIME. THERE MAY BE A FEW SHOWERS OVER CROOK AND GRANT COUNTIES LATE
TONIGHT DUE TO A WEAK WAVE AHEAD OF THE MAIN TROUGH. CURRENT SYSTEM
TIMING INDICATES THAT SHOWERS AND THUNDERSTORMS MAY DEVELOP FROM
SOUTHERN WALLOWA COUNTY SOUTHWEST INTO PORTIONS OF GRANT COUNTY IN
THE AFTERNOON AND EVENING. ALSO A FEW SLOP OVER SHOWERS MAY OCCUR
OVER PORTIONS OF THE WASHINGTON CASCADE EAST SLOPES. 90

LONG TERM...WEDNESDAY THROUGH SUNDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST WEDNESDAY THROUGH FRIDAY. EMBEDDED
IMPULSES WITHIN THE FLOW MAY TRIGGER SOME OROGRAPHIC DIURNAL
ENHANCED SHOWERS THROUGH THE PERIOD. MODELS ARE INCONSISTENT ON
TIMING AND LOCATION OF THESE IMPULSES SO LIMITED POPS TO SLIGHT
CHANCE IN THE MOUNTAINS. REMOVED THUNDERSTORMS DURING THIS TIME
SINCE GFS HAS LIS OVER 3 AND NO ELEVATED CAPE TO TRIGGER
THUNDERSTORMS. SATURDAY AND SUNDAY AN UPPER LEVEL RIDGE WILL BUILD
OFFSHORE. THIS WILL BRING DRY NORTHWEST FLOW OVER THE PACIFIC
NORTHWEST. A DISTURBANCE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SUNDAY AFTERNOON. INSTABILITY AND MOISTURE ASSOCIATED WITH THIS
DISTURBANCE MAY TRIGGER A FEW SHOWERS OR THUNDERSTORMS IN THE BLUE
AND WALLOWA MOUNTAINS. COONFIELD

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  92  63  89  57 /   0   0  10  10
ALW  93  68  89  63 /   0   0  10  10
PSC  95  64  92  62 /   0   0   0   0
YKM  93  64  90  58 /   0   0   0   0
HRI  95  64  91  60 /   0   0  10  10
ELN  94  61  87  59 /   0   0   0   0
RDM  89  55  86  47 /  10  10  10  10
LGD  90  56  87  52 /  10  10  10  10
GCD  90  60  86  53 /  10  20  20  20
DLS  95  68  88  61 /   0   0  10  10

&&

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

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

$$

91/98/98








000
FXUS66 KPDT 181532
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
832 AM PDT MON AUG 18 2014

.SHORT TERM...TODAY THROUGH TUESDAY...A SMALL UPPER LEVEL LOW OVER
SOUTHWEST OREGON THIS MORNING WHICH WAS RESPONSIBLE FOR LAST NIGHTS
CONVECTION WILL MOVE FURTHER SOUTHWARD TODAY BUT COULD LEAVE ENOUGH
INSTABILITY TO PRODUCE A FEW THUNDERSTORMS OVER CENTRAL OREGON LATE
THIS AFTERNOON AND EVENING. AS IT MOVES SOUTH THE BETTER DYNAMICS
FOR INSTIGATING CONVECTION WILL ALSO MOVE SOUTHWARD SO ONLY
EXPECTING SLIGHT CHANCE OR ISOLATED THUNDERSTORMS FOR CENTRAL
OREGON. OTHERWISE HIGH PRESSURE OVER THE AREA WILL PROVIDE MOSTLY
SUNNY SKIES AND HOT TEMPERATURES. A FAST MOVING WEATHER SYSTEM IS
EXPECTED TO CLIP THE PACIFIC NORTHWEST ON TUESDAY. THIS WILL USHER
IN BREEZY CONDITIONS AND BEGIN COOLING TEMPERATURES. IT WILL ALSO
PUSH ANY CONVECTION THREAT SOUTH AND EAST LIMITING POSSIBLE
THUNDERSTORMS TO THE MOUNTAINS OVER EASTERN GRANT AND SOUTHERN
WALLOWA COUNTIES.

&&

.PREV DISC... /ISSUED 407 AM PDT MON AUG 18 2014/

SHORT TERM...TODAY THROUGH TUESDAY NIGHT...AN UPPER LOW OFF THE
NORTHWEST OREGON COAST IS IN THE PROCESS OF STRETCHING SOUTHWARD
CAUSING A NEW LOW TO DEVELOP ALONG THE EXTREME SOUTHWEST OREGON
COAST. A WEAK WAVE ASSOCIATED WITH THE THUNDERSTORMS OVER CENTRAL
OREGON LAST EVENING CONTINUES TO MOVE NORTH WHILE SHEARING EAST AND
WEST. DEBRIS CLOUDINESS ASSOCIATED WITH THIS WAVE CONTINUES TO
DISSIPATE. ANOTHER WEAK WAVE IS ALSO MOVING INTO SOUTHEAST OREGON.
THIS WAVE SHOULD REACH SOUTHWEST IDAHO BY DAYBREAK. THE UPPER LOW
DEVELOPING NEAR SOUTHWEST OREGON WILL BE THE MAIN CONCERN TODAY.
THIS LOW WILL FOCUS SHOWER AND THUNDERSTORM DEVELOPMENT OVER
SOUTH-CENTRAL OREGON, BUT LINGERING MOISTURE WRAPPING TOWARDS THE
LOW AND DAYTIME HEATING WILL RESULT IN SHOWERS AND STORMS DEVELOPING
AGAIN OVER CENTRAL AND EAST-CENTRAL OREGON. WESTERLY FLOW WILL
DEVELOP ACROSS NORTHEAST OREGON AND SOUTHEAST WASHINGTON TODAY. THIS
FLOW WILL RESULT IN THESE AREAS SEEING INCREASING STABILITY AND DRY
CONDITIONS. WILL KEEP SOME MENTION OF STORMS OVER THE WALLOWA
MOUNTAINS DUE TO UPSLOPE WIND CONVERGENCE, BUT THE AIR MASS HERE MAY
ALSO BECOME TOO DRY TO SUPPORT STORM DEVELOPMENT. AN UPPER TROUGH
MOVING THROUGH THE GULF OF ALASKA WILL SWING ACROSS THE REGION
TUESDAY. THIS TROUGH WILL PUSH A COOL FRONT ACROSS THE REGION AS
WELL, RESULTING IN WINDS INCREASING ACROSS THE AREA IN THE AFTERNOON
AND EVENING. PRECIPITATION WITH THIS SYSTEM LOOKS LIMITED AT THIS
TIME. THERE MAY BE A FEW SHOWERS OVER CROOK AND GRANT COUNTIES LATE
TONIGHT DUE TO A WEAK WAVE AHEAD OF THE MAIN TROUGH. CURRENT SYSTEM
TIMING INDICATES THAT SHOWERS AND THUNDERSTORMS MAY DEVELOP FROM
SOUTHERN WALLOWA COUNTY SOUTHWEST INTO PORTIONS OF GRANT COUNTY IN
THE AFTERNOON AND EVENING. ALSO A FEW SLOP OVER SHOWERS MAY OCCUR
OVER PORTIONS OF THE WASHINGTON CASCADE EAST SLOPES. 90

LONG TERM...WEDNESDAY THROUGH SUNDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST WEDNESDAY THROUGH FRIDAY. EMBEDDED
IMPULSES WITHIN THE FLOW MAY TRIGGER SOME OROGRAPHIC DIURNAL
ENHANCED SHOWERS THROUGH THE PERIOD. MODELS ARE INCONSISTENT ON
TIMING AND LOCATION OF THESE IMPULSES SO LIMITED POPS TO SLIGHT
CHANCE IN THE MOUNTAINS. REMOVED THUNDERSTORMS DURING THIS TIME
SINCE GFS HAS LIS OVER 3 AND NO ELEVATED CAPE TO TRIGGER
THUNDERSTORMS. SATURDAY AND SUNDAY AN UPPER LEVEL RIDGE WILL BUILD
OFFSHORE. THIS WILL BRING DRY NORTHWEST FLOW OVER THE PACIFIC
NORTHWEST. A DISTURBANCE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SUNDAY AFTERNOON. INSTABILITY AND MOISTURE ASSOCIATED WITH THIS
DISTURBANCE MAY TRIGGER A FEW SHOWERS OR THUNDERSTORMS IN THE BLUE
AND WALLOWA MOUNTAINS. COONFIELD

AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL AT MOST TAF SITES
FOR THE NEXT 24 HOURS.A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP
MONDAY AFTERNOON NEAR KBDN AND KRDM. WINDS WILL REMAIN LIGHT AND
UNDER 15 KTS THROUGH THE NEXT 24 HOURS. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  92  63  89  57 /   0   0  10  10
ALW  93  68  89  63 /   0   0  10  10
PSC  95  64  92  62 /   0   0   0   0
YKM  93  64  90  58 /   0   0   0   0
HRI  95  64  91  60 /   0   0  10  10
ELN  94  61  87  59 /   0   0   0   0
RDM  89  55  86  47 /  10  10  10  10
LGD  90  56  87  52 /  10  10  10  10
GCD  90  60  86  53 /  10  20  20  20
DLS  95  68  88  61 /   0   0  10  10

&&

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

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

$$

91/98/98









000
FXUS66 KPDT 181532
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
832 AM PDT MON AUG 18 2014

.SHORT TERM...TODAY THROUGH TUESDAY...A SMALL UPPER LEVEL LOW OVER
SOUTHWEST OREGON THIS MORNING WHICH WAS RESPONSIBLE FOR LAST NIGHTS
CONVECTION WILL MOVE FURTHER SOUTHWARD TODAY BUT COULD LEAVE ENOUGH
INSTABILITY TO PRODUCE A FEW THUNDERSTORMS OVER CENTRAL OREGON LATE
THIS AFTERNOON AND EVENING. AS IT MOVES SOUTH THE BETTER DYNAMICS
FOR INSTIGATING CONVECTION WILL ALSO MOVE SOUTHWARD SO ONLY
EXPECTING SLIGHT CHANCE OR ISOLATED THUNDERSTORMS FOR CENTRAL
OREGON. OTHERWISE HIGH PRESSURE OVER THE AREA WILL PROVIDE MOSTLY
SUNNY SKIES AND HOT TEMPERATURES. A FAST MOVING WEATHER SYSTEM IS
EXPECTED TO CLIP THE PACIFIC NORTHWEST ON TUESDAY. THIS WILL USHER
IN BREEZY CONDITIONS AND BEGIN COOLING TEMPERATURES. IT WILL ALSO
PUSH ANY CONVECTION THREAT SOUTH AND EAST LIMITING POSSIBLE
THUNDERSTORMS TO THE MOUNTAINS OVER EASTERN GRANT AND SOUTHERN
WALLOWA COUNTIES.

&&

.PREV DISC... /ISSUED 407 AM PDT MON AUG 18 2014/

SHORT TERM...TODAY THROUGH TUESDAY NIGHT...AN UPPER LOW OFF THE
NORTHWEST OREGON COAST IS IN THE PROCESS OF STRETCHING SOUTHWARD
CAUSING A NEW LOW TO DEVELOP ALONG THE EXTREME SOUTHWEST OREGON
COAST. A WEAK WAVE ASSOCIATED WITH THE THUNDERSTORMS OVER CENTRAL
OREGON LAST EVENING CONTINUES TO MOVE NORTH WHILE SHEARING EAST AND
WEST. DEBRIS CLOUDINESS ASSOCIATED WITH THIS WAVE CONTINUES TO
DISSIPATE. ANOTHER WEAK WAVE IS ALSO MOVING INTO SOUTHEAST OREGON.
THIS WAVE SHOULD REACH SOUTHWEST IDAHO BY DAYBREAK. THE UPPER LOW
DEVELOPING NEAR SOUTHWEST OREGON WILL BE THE MAIN CONCERN TODAY.
THIS LOW WILL FOCUS SHOWER AND THUNDERSTORM DEVELOPMENT OVER
SOUTH-CENTRAL OREGON, BUT LINGERING MOISTURE WRAPPING TOWARDS THE
LOW AND DAYTIME HEATING WILL RESULT IN SHOWERS AND STORMS DEVELOPING
AGAIN OVER CENTRAL AND EAST-CENTRAL OREGON. WESTERLY FLOW WILL
DEVELOP ACROSS NORTHEAST OREGON AND SOUTHEAST WASHINGTON TODAY. THIS
FLOW WILL RESULT IN THESE AREAS SEEING INCREASING STABILITY AND DRY
CONDITIONS. WILL KEEP SOME MENTION OF STORMS OVER THE WALLOWA
MOUNTAINS DUE TO UPSLOPE WIND CONVERGENCE, BUT THE AIR MASS HERE MAY
ALSO BECOME TOO DRY TO SUPPORT STORM DEVELOPMENT. AN UPPER TROUGH
MOVING THROUGH THE GULF OF ALASKA WILL SWING ACROSS THE REGION
TUESDAY. THIS TROUGH WILL PUSH A COOL FRONT ACROSS THE REGION AS
WELL, RESULTING IN WINDS INCREASING ACROSS THE AREA IN THE AFTERNOON
AND EVENING. PRECIPITATION WITH THIS SYSTEM LOOKS LIMITED AT THIS
TIME. THERE MAY BE A FEW SHOWERS OVER CROOK AND GRANT COUNTIES LATE
TONIGHT DUE TO A WEAK WAVE AHEAD OF THE MAIN TROUGH. CURRENT SYSTEM
TIMING INDICATES THAT SHOWERS AND THUNDERSTORMS MAY DEVELOP FROM
SOUTHERN WALLOWA COUNTY SOUTHWEST INTO PORTIONS OF GRANT COUNTY IN
THE AFTERNOON AND EVENING. ALSO A FEW SLOP OVER SHOWERS MAY OCCUR
OVER PORTIONS OF THE WASHINGTON CASCADE EAST SLOPES. 90

LONG TERM...WEDNESDAY THROUGH SUNDAY...A BROAD TROUGH WILL REMAIN
OVER THE PACIFIC NORTHWEST WEDNESDAY THROUGH FRIDAY. EMBEDDED
IMPULSES WITHIN THE FLOW MAY TRIGGER SOME OROGRAPHIC DIURNAL
ENHANCED SHOWERS THROUGH THE PERIOD. MODELS ARE INCONSISTENT ON
TIMING AND LOCATION OF THESE IMPULSES SO LIMITED POPS TO SLIGHT
CHANCE IN THE MOUNTAINS. REMOVED THUNDERSTORMS DURING THIS TIME
SINCE GFS HAS LIS OVER 3 AND NO ELEVATED CAPE TO TRIGGER
THUNDERSTORMS. SATURDAY AND SUNDAY AN UPPER LEVEL RIDGE WILL BUILD
OFFSHORE. THIS WILL BRING DRY NORTHWEST FLOW OVER THE PACIFIC
NORTHWEST. A DISTURBANCE WILL MOVE DOWN THE BACKSIDE OF THE RIDGE
SUNDAY AFTERNOON. INSTABILITY AND MOISTURE ASSOCIATED WITH THIS
DISTURBANCE MAY TRIGGER A FEW SHOWERS OR THUNDERSTORMS IN THE BLUE
AND WALLOWA MOUNTAINS. COONFIELD

AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL AT MOST TAF SITES
FOR THE NEXT 24 HOURS.A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP
MONDAY AFTERNOON NEAR KBDN AND KRDM. WINDS WILL REMAIN LIGHT AND
UNDER 15 KTS THROUGH THE NEXT 24 HOURS. 76

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  92  63  89  57 /   0   0  10  10
ALW  93  68  89  63 /   0   0  10  10
PSC  95  64  92  62 /   0   0   0   0
YKM  93  64  90  58 /   0   0   0   0
HRI  95  64  91  60 /   0   0  10  10
ELN  94  61  87  59 /   0   0   0   0
RDM  89  55  86  47 /  10  10  10  10
LGD  90  56  87  52 /  10  10  10  10
GCD  90  60  86  53 /  10  20  20  20
DLS  95  68  88  61 /   0   0  10  10

&&

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

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

$$

91/98/98










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