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000
FXUS66 KPDT 282244
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
244 PM PST FRI NOV 28 2014

.SHORT TERM...TONIGHT THROUGH SUNDAY...THE LATEST PACIFIC SYSTEM
WILL MOVE THROUGH THE PACIFIC NORTHWEST TONIGHT THROUGH SATURDAY.
THIS SYSTEM WILL PUSH A MARINE POLAR FRONT THROUGH THE REGION DURING
THE EARLY MORNING HOURS SATURDAY, THEN AN ARCTIC FRONT WILL MOVE
THROUGH DURING THE DAY SATURDAY. BREEZY TO WINDY CONDITIONS WILL
CONTINUE THROUGH THIS EVENING WITH STRONGEST WINDS OVER THE LOWER
BASIN AND YAKIMA VALLEY IN WASHINGTON. ONSHORE FLOW TONIGHT WILL
PRODUCE VARYING AMOUNTS OF RAIN AND SNOW. SNOW LEVELS WILL BEGIN TO
FALL ALONG THE WASHINGTON CASCADE EAST SLOPES LATE THIS EVENING.
ELSEWHERE, SNOW LEVELS WILL FALL OVERNIGHT THROUGH MID MORNING
SATURDAY WITH THE PASSAGE OF THE MARINE POLAR FRONT. SNOW LEVELS
WILL FALL FURTHER, REACHING THE LOWEST ELEVATIONS BY SATURDAY
AFTERNOON DUE TO THE ARCTIC FRONT. OVERALL SNOWFALL WILL BE LIMITED
BELOW 5000 FEET DUE TO THE TIMING OF THE SYSTEM AND THE SNOW LEVEL
DROP. SOME LIGHT UPSLOPE INDUCED SNOW WILL BE POSSIBLE ALONG THE
NORTH AND NORTHEAST FACING MOUNTAIN SLOPES AND FOOTHILLS INTO
SATURDAY EVENING AS THE ARCTIC AIR MASS CONTINUES TO FILTER INTO THE
AREA. EXPECT FAIR, DRY AND COLD CONDITIONS LATE SATURDAY NIGHT
THROUGH SUNDAY. 90

.LONG TERM...SUNDAY NIGHT THROUGH WEDNESDAY NIGHT...WARM FRONT WILL
BE LIFTING NORTH LATE SUNDAY NIGHT AND ACROSS NORTHERN OREGON ON
MONDAY. THERE IS STILL A LOT OF DISAGREEMENT IN THE MODELS ON HOW
FAR NORTH INTO WASHINGTON THE WARM FRONT WILL MOVE BY MONDAY NIGHT.
AT THIS TIME IT APPEARS IT WILL REMAIN SOUTH OF A LINE FROM YAKIMA
TO PULLMAN AND THEN GET PUSHED BACK SOUTH ON TUESDAY AS ANOTHER
PIECE OF ENERGY DROPS SOUTH ACROSS WASHINGTON. MODEL SOUNDINGS
INDICATE A CHANCE OF FREEZING RAIN...SLEET AND SNOW IN THE COLUMBIA
RIVER GORGE, PART OF NORTH CENTRAL OREGON FROM MADRAS NORTH AND THE
FOOTHILLS OF THE BLUE MOUNTAINS AND LOWER COLUMBIA BASIN OF OREGON
MONDAY AFTERNOON AND EVENING. THEN BY TUESDAY THE COLD AIR IS WASHED
OUT, LEAVING A CHANCE OF RAIN OR SNOW ACROSS NORTHERN OREGON ON
TUESDAY. THE FLOW BECOMES MORE WESTERLY ON WEDNESDAY WITH MOUNTAIN
SHOWERS. ML

THURSDAY THROUGH FRIDAY...NO MAJOR WEATHER CONCERNS ARE ANTICIPATED
IN DAYS 6-7 OF THE FORECAST. A WESTERLY FLOW WILL KEEP A CHANCE OF
SNOW SHOWERS OVER THE MOUNTAINS AND A SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS ELSEWHERE. EVEN THOUGH THE SNOW LEVELS WILL BE NEAR THE
BASIN FLOOR AT NIGHT...THE THREAT OF PRECIPITATION IS MINIMAL FOR
THE LOWER COLUMBIA BASIN AND SURROUNDING VALLEYS. MODELS ARE HINTING
AT A WEAK RIDGE ON FRIDAY...AND THE UPCOMING SHIFT MAY DECIDE TO
REMOVE POPS FOR MOST OF THE AREA IF THIS MODEL TREND CONTINUES.
WISTER

&&

.AVIATION...00Z TAFS...WINDS 20-30 KTS WILL BE SEEN AT MOST
LOCATIONS THROUGH 06Z TONIGHT WITH THE EXCEPTION OF KDLS WHICH WILL
BE 15-25 KTS. COLD FRONT WILL BE WORKING SOUTH OVER WASHINGTON
TONIGHT WITH MAIN RAIN BAND PUSHED SOUTH OVER OREGON BY EARLY
SUNDAY. MVFR VISIBILITY AT KDLS WILL CONTINUE THROUGH 06Z AS HEAVIER
RAIN BANDS MOVE THROUGH WITH LIGHT RAIN SHOWERS POSSIBLE THROUGH THE
NIGHT AT OTHER LOCATIONS. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  37  15  24 /  80  50  20   0
ALW  38  39  18  27 /  80  40  20   0
PSC  36  38  12  28 /  50  20  10   0
YKM  32  36  12  25 /  30  20   0   0
HRI  37  39  11  26 /  40  20  10   0
ELN  28  34   9  26 /  40  20   0   0
RDM  34  37  12  29 /  70  40  20   0
LGD  39  41  13  27 /  80  70  30   0
GCD  35  37  13  30 /  60  70  20   0
DLS  39  43  23  29 /  70  30  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...WIND ADVISORY UNTIL 10 PM PST THIS EVENING WAZ027-028.

&&

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

$$

90/93/85/93









000
FXUS66 KPDT 282244
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
244 PM PST FRI NOV 28 2014

.SHORT TERM...TONIGHT THROUGH SUNDAY...THE LATEST PACIFIC SYSTEM
WILL MOVE THROUGH THE PACIFIC NORTHWEST TONIGHT THROUGH SATURDAY.
THIS SYSTEM WILL PUSH A MARINE POLAR FRONT THROUGH THE REGION DURING
THE EARLY MORNING HOURS SATURDAY, THEN AN ARCTIC FRONT WILL MOVE
THROUGH DURING THE DAY SATURDAY. BREEZY TO WINDY CONDITIONS WILL
CONTINUE THROUGH THIS EVENING WITH STRONGEST WINDS OVER THE LOWER
BASIN AND YAKIMA VALLEY IN WASHINGTON. ONSHORE FLOW TONIGHT WILL
PRODUCE VARYING AMOUNTS OF RAIN AND SNOW. SNOW LEVELS WILL BEGIN TO
FALL ALONG THE WASHINGTON CASCADE EAST SLOPES LATE THIS EVENING.
ELSEWHERE, SNOW LEVELS WILL FALL OVERNIGHT THROUGH MID MORNING
SATURDAY WITH THE PASSAGE OF THE MARINE POLAR FRONT. SNOW LEVELS
WILL FALL FURTHER, REACHING THE LOWEST ELEVATIONS BY SATURDAY
AFTERNOON DUE TO THE ARCTIC FRONT. OVERALL SNOWFALL WILL BE LIMITED
BELOW 5000 FEET DUE TO THE TIMING OF THE SYSTEM AND THE SNOW LEVEL
DROP. SOME LIGHT UPSLOPE INDUCED SNOW WILL BE POSSIBLE ALONG THE
NORTH AND NORTHEAST FACING MOUNTAIN SLOPES AND FOOTHILLS INTO
SATURDAY EVENING AS THE ARCTIC AIR MASS CONTINUES TO FILTER INTO THE
AREA. EXPECT FAIR, DRY AND COLD CONDITIONS LATE SATURDAY NIGHT
THROUGH SUNDAY. 90

.LONG TERM...SUNDAY NIGHT THROUGH WEDNESDAY NIGHT...WARM FRONT WILL
BE LIFTING NORTH LATE SUNDAY NIGHT AND ACROSS NORTHERN OREGON ON
MONDAY. THERE IS STILL A LOT OF DISAGREEMENT IN THE MODELS ON HOW
FAR NORTH INTO WASHINGTON THE WARM FRONT WILL MOVE BY MONDAY NIGHT.
AT THIS TIME IT APPEARS IT WILL REMAIN SOUTH OF A LINE FROM YAKIMA
TO PULLMAN AND THEN GET PUSHED BACK SOUTH ON TUESDAY AS ANOTHER
PIECE OF ENERGY DROPS SOUTH ACROSS WASHINGTON. MODEL SOUNDINGS
INDICATE A CHANCE OF FREEZING RAIN...SLEET AND SNOW IN THE COLUMBIA
RIVER GORGE, PART OF NORTH CENTRAL OREGON FROM MADRAS NORTH AND THE
FOOTHILLS OF THE BLUE MOUNTAINS AND LOWER COLUMBIA BASIN OF OREGON
MONDAY AFTERNOON AND EVENING. THEN BY TUESDAY THE COLD AIR IS WASHED
OUT, LEAVING A CHANCE OF RAIN OR SNOW ACROSS NORTHERN OREGON ON
TUESDAY. THE FLOW BECOMES MORE WESTERLY ON WEDNESDAY WITH MOUNTAIN
SHOWERS. ML

THURSDAY THROUGH FRIDAY...NO MAJOR WEATHER CONCERNS ARE ANTICIPATED
IN DAYS 6-7 OF THE FORECAST. A WESTERLY FLOW WILL KEEP A CHANCE OF
SNOW SHOWERS OVER THE MOUNTAINS AND A SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS ELSEWHERE. EVEN THOUGH THE SNOW LEVELS WILL BE NEAR THE
BASIN FLOOR AT NIGHT...THE THREAT OF PRECIPITATION IS MINIMAL FOR
THE LOWER COLUMBIA BASIN AND SURROUNDING VALLEYS. MODELS ARE HINTING
AT A WEAK RIDGE ON FRIDAY...AND THE UPCOMING SHIFT MAY DECIDE TO
REMOVE POPS FOR MOST OF THE AREA IF THIS MODEL TREND CONTINUES.
WISTER

&&

.AVIATION...00Z TAFS...WINDS 20-30 KTS WILL BE SEEN AT MOST
LOCATIONS THROUGH 06Z TONIGHT WITH THE EXCEPTION OF KDLS WHICH WILL
BE 15-25 KTS. COLD FRONT WILL BE WORKING SOUTH OVER WASHINGTON
TONIGHT WITH MAIN RAIN BAND PUSHED SOUTH OVER OREGON BY EARLY
SUNDAY. MVFR VISIBILITY AT KDLS WILL CONTINUE THROUGH 06Z AS HEAVIER
RAIN BANDS MOVE THROUGH WITH LIGHT RAIN SHOWERS POSSIBLE THROUGH THE
NIGHT AT OTHER LOCATIONS. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  37  15  24 /  80  50  20   0
ALW  38  39  18  27 /  80  40  20   0
PSC  36  38  12  28 /  50  20  10   0
YKM  32  36  12  25 /  30  20   0   0
HRI  37  39  11  26 /  40  20  10   0
ELN  28  34   9  26 /  40  20   0   0
RDM  34  37  12  29 /  70  40  20   0
LGD  39  41  13  27 /  80  70  30   0
GCD  35  37  13  30 /  60  70  20   0
DLS  39  43  23  29 /  70  30  10   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...WIND ADVISORY UNTIL 10 PM PST THIS EVENING WAZ027-028.

&&

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

$$

90/93/85/93










000
FXUS66 KPDT 281745
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
945 AM PST FRI NOV 28 2014

.SHORT TERM...MORNING UPDATE...THE NEXT SIGNIFICANT WEATHER SYSTEM
CONTINUES TO MOVE INTO SOUTHERN BRITISH COLUMBIA AND THE PACIFIC
NORTHWEST. SURFACE PRESSURE GRADIENTS ACROSS THE COLUMBIA BASIN,
YAKIMA VALLEY AND NORTH-CENTRAL OREGON ARE TIGHTENING DUE TO THE
DEVELOPMENT OF A SURFACE LOW IN B.C.. EXPECT BREEZY TO WINDY
CONDITIONS IN THESE AREAS INTO THIS EVENING. SOME LOCATIONS MAY
APPROACH ADVISORY LEVELS LATE THIS AFTERNOON AND THIS EVENING. WILL
MONITOR AND ISSUE WIND HIGHLIGHTS AS NEEDED. ONSHORE FLOW WILL
PERSIST ACROSS THE REGION TODAY WITH VARYING AMOUNTS OF SHOWERS
EXPECTED. SHOWER CHANCES SHOULD INCREASE THIS AFTERNOON INTO THE
EVENING. SNOW LEVELS WILL REMAIN HIGH THROUGH THE EVENING. UPDATES
FOCUSED ON NUDGING WINDS UP A BIT MORE IN THE ABOVE MENTIONED AREAS,
AND MAKING SOME ADJUSTMENTS TO POPS AND SNOW LEVELS. 90

.LONG TERM...PREVIOUS DISCUSSION...HAVE MADE FEW CHANGES TO THE
EXTENDED FORECAST AS MODELS CONTINUE TO DISAGREE WITH THE AMOUNT OF
MOISTURE MOVING NORTHWARD INTO THE AREA AS WELL AS THE TIMING. HAVE
CONTINUED TO LEAN TOWARD THE EUROPEAN WITH MOISTURE MOVING NORTHWARD
FROM CENTRAL OREGON SUNDAY NIGHT TO THE REST OF THE AREA BY MONDAY.
SNOW LEVELS REMAIN LOW WITH MOST OF THE AREA SEEING SNOW. THE NEXT
ROUND OF PRECIPITATION WILL BE ON WEDNESDAY WITH RISING SNOW LEVELS.
THIS COULD LEAD TO SNOW TRANSITIONING TO RAIN DURING THE DAY.
HOWEVER...IF THE COLD AIR IN THE LOWER ELEVATIONS REMAIN IN PLACE AS
THE WARM AIR MOVES ALOFT...THERE COULD BE A POTENTIAL FOR BRIEF
FREEZING RAIN. WILL CONTINUE TO MONITOR THE SITUATION. TEMPERATURES
DURING THE PERIOD WILL BE BELOW NORMAL.

&&

.AVIATION...18Z TAFS...LIGHT RAIN WILL INCREASE THIS AFTERNOON WITH
A FRONTAL SYSTEM...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM AND KPSC. WINDS 20-30 KTS WILL BE SEEN AT MOST LOCATIONS
THROUGH 06Z TONIGHT WITH THE EXCEPTION OF KDLS WHICH WILL BE 15-25
KTS BY THIS AFTERNOON.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  35  35  14 /  60  80  50  20
ALW  63  37  37  16 /  70  80  50  20
PSC  63  35  37  17 /  30  50  20  10
YKM  58  32  32  12 /  30  30  20   0
HRI  61  36  37  15 /  30  60  20  10
ELN  52  28  28  12 /  40  40  20   0
RDM  56  34  34   8 /  50  70  50  20
LGD  55  38  39  12 /  70  80  70  30
GCD  54  35  35  11 /  60  60  70  30
DLS  57  36  37  23 /  60  70  20  10

&&

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

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

$$

90/84/93








000
FXUS66 KPDT 281745
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
945 AM PST FRI NOV 28 2014

.SHORT TERM...MORNING UPDATE...THE NEXT SIGNIFICANT WEATHER SYSTEM
CONTINUES TO MOVE INTO SOUTHERN BRITISH COLUMBIA AND THE PACIFIC
NORTHWEST. SURFACE PRESSURE GRADIENTS ACROSS THE COLUMBIA BASIN,
YAKIMA VALLEY AND NORTH-CENTRAL OREGON ARE TIGHTENING DUE TO THE
DEVELOPMENT OF A SURFACE LOW IN B.C.. EXPECT BREEZY TO WINDY
CONDITIONS IN THESE AREAS INTO THIS EVENING. SOME LOCATIONS MAY
APPROACH ADVISORY LEVELS LATE THIS AFTERNOON AND THIS EVENING. WILL
MONITOR AND ISSUE WIND HIGHLIGHTS AS NEEDED. ONSHORE FLOW WILL
PERSIST ACROSS THE REGION TODAY WITH VARYING AMOUNTS OF SHOWERS
EXPECTED. SHOWER CHANCES SHOULD INCREASE THIS AFTERNOON INTO THE
EVENING. SNOW LEVELS WILL REMAIN HIGH THROUGH THE EVENING. UPDATES
FOCUSED ON NUDGING WINDS UP A BIT MORE IN THE ABOVE MENTIONED AREAS,
AND MAKING SOME ADJUSTMENTS TO POPS AND SNOW LEVELS. 90

.LONG TERM...PREVIOUS DISCUSSION...HAVE MADE FEW CHANGES TO THE
EXTENDED FORECAST AS MODELS CONTINUE TO DISAGREE WITH THE AMOUNT OF
MOISTURE MOVING NORTHWARD INTO THE AREA AS WELL AS THE TIMING. HAVE
CONTINUED TO LEAN TOWARD THE EUROPEAN WITH MOISTURE MOVING NORTHWARD
FROM CENTRAL OREGON SUNDAY NIGHT TO THE REST OF THE AREA BY MONDAY.
SNOW LEVELS REMAIN LOW WITH MOST OF THE AREA SEEING SNOW. THE NEXT
ROUND OF PRECIPITATION WILL BE ON WEDNESDAY WITH RISING SNOW LEVELS.
THIS COULD LEAD TO SNOW TRANSITIONING TO RAIN DURING THE DAY.
HOWEVER...IF THE COLD AIR IN THE LOWER ELEVATIONS REMAIN IN PLACE AS
THE WARM AIR MOVES ALOFT...THERE COULD BE A POTENTIAL FOR BRIEF
FREEZING RAIN. WILL CONTINUE TO MONITOR THE SITUATION. TEMPERATURES
DURING THE PERIOD WILL BE BELOW NORMAL.

&&

.AVIATION...18Z TAFS...LIGHT RAIN WILL INCREASE THIS AFTERNOON WITH
A FRONTAL SYSTEM...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM AND KPSC. WINDS 20-30 KTS WILL BE SEEN AT MOST LOCATIONS
THROUGH 06Z TONIGHT WITH THE EXCEPTION OF KDLS WHICH WILL BE 15-25
KTS BY THIS AFTERNOON.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  62  35  35  14 /  60  80  50  20
ALW  63  37  37  16 /  70  80  50  20
PSC  63  35  37  17 /  30  50  20  10
YKM  58  32  32  12 /  30  30  20   0
HRI  61  36  37  15 /  30  60  20  10
ELN  52  28  28  12 /  40  40  20   0
RDM  56  34  34   8 /  50  70  50  20
LGD  55  38  39  12 /  70  80  70  30
GCD  54  35  35  11 /  60  60  70  30
DLS  57  36  37  23 /  60  70  20  10

&&

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

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

$$

90/84/93









000
FXUS66 KPDT 281043 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
245 AM PST FRI NOV 28 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SUNDAY...A COUPLE OF COLD FRONTS ARE
EXPECTED TO MOVE ACROSS THE PACIFIC NORTHWEST DURING THE NEXT COUPLE
OF DAYS. THE FIRST FRONT RUNS FROM EAST CENTRAL OREGON SOUTHWEST TO
SOUTHWEST OREGON AT THIS TIME. THE MOISTURE ASSOCIATED WITH THIS
FRONT IS SHOWN ON RADAR MOVING ACROSS CENTRAL AND NORTHEAST OREGON.
MUCH OF THE PRECIPITATION IS NOT REACHING THE GROUND HOWEVER. THE
GFS MODEL MERGES THIS COLD FRONT WITH THE NEXT ONE BY LATE THIS
AFTERNOON. RAIN WILL PERSIST THROUGH SATURDAY...ESPECIALLY OVER
OREGON...AND MIX WITH AND THEN CHANGE TO SNOW BY LATE SATURDAY.
DRIER AND MUCH COLDER WILL FILTER SOUTHWARD OUT OF CANADA ON
SATURDAY NIGHT INTO SUNDAY WITH HIGH TEMPERATURES ABOUT 25 TO 30
DEGREES COOLER THAN TODAY. AN ARCTIC AIR MASS WILL MOVE INTO THE
REGION AND CWA LATE SATURDAY NIGHT INTO SUNDAY. TEMPERATURES ON
SUNDAY ARE EXPECTED TO REMAIN BELOW FREEZING CWA WIDE. VERY COLD BUT
DRY CONDITIONS ARE EXPECTED TO PERSIST INTO THE EXTENDED PERIOD.
WINDS WILL BE LOCALLY BREEZY AT TIMES THROUGH THE SHORT TERM
PERIOD...BUT THE WIND SPEEDS WILL REMAIN BELOW ADVISORY SPEEDS. 88

.LONG TERM...SUNDAY NIGHT THROUGH THURSDAY...HAVE MADE FEW CHANGES
TO THE EXTENDED FORECAST AS MODELS CONTINUE TO DISAGREE WITH THE
AMOUNT OF MOISTURE MOVING NORTHWARD INTO THE AREA AS WELL AS THE
TIMING. HAVE CONTINUED TO LEAN TOWARD THE EUROPEAN WITH MOISTURE
MOVING NORTHWARD FROM CENTRAL OREGON SUNDAY NIGHT TO THE REST OF THE
AREA BY MONDAY. SNOW LEVELS REMAIN LOW WITH MOST OF THE AREA SEEING
SNOW. THE NEXT ROUND OF PRECIPITATION WILL BE ON WEDNESDAY WITH
RISING SNOW LEVELS. THIS COULD LEAD TO SNOW TRANSITIONING TO RAIN
DURING THE DAY. HOWEVER...IF THE COLD AIR IN THE LOWER ELEVATIONS
REMAIN IN PLACE AS THE WARM AIR MOVES ALOFT...THERE COULD BE A
POTENTIAL FOR BRIEF FREEZING RAIN. WILL CONTINUE TO MONITOR THE
SITUATION. TEMPERATURES DURING THE PERIOD WILL BE BELOW NORMAL. DMH

&&

.AVIATION...12Z TAFS...LIGHT RAIN WILL CONTINUE TO MOVE SLOWLY
NORTHWARD ACROSS THE REGION. SHOWERS WILL INCREASE THIS AFTERNOON
WITH A FRONTAL SYSTEM...WITH SOME RAIN SHADOWING EAST OF THE
CASCADES FOR KYKM AND KPSC. WINDS WILL BECOME BREEZY TODAY WITH
15-25 KTS BY THIS AFTERNOON. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  35  34  14 /  60  80  50  20
ALW  62  37  36  16 /  70  80  50  20
PSC  59  35  37  17 /  30  50  20  10
YKM  53  32  31  12 /  30  30  20   0
HRI  59  36  37  15 /  40  60  20  10
ELN  50  28  27  12 /  40  40  20   0
RDM  55  34  33   8 /  50  70  50  20
LGD  51  38  39  12 /  70  80  70  30
GCD  52  35  34  11 /  60  60  70  30
DLS  54  36  37  23 /  60  70  20  10

&&

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

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

$$

88/84/84







000
FXUS66 KPDT 281043 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
245 AM PST FRI NOV 28 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SUNDAY...A COUPLE OF COLD FRONTS ARE
EXPECTED TO MOVE ACROSS THE PACIFIC NORTHWEST DURING THE NEXT COUPLE
OF DAYS. THE FIRST FRONT RUNS FROM EAST CENTRAL OREGON SOUTHWEST TO
SOUTHWEST OREGON AT THIS TIME. THE MOISTURE ASSOCIATED WITH THIS
FRONT IS SHOWN ON RADAR MOVING ACROSS CENTRAL AND NORTHEAST OREGON.
MUCH OF THE PRECIPITATION IS NOT REACHING THE GROUND HOWEVER. THE
GFS MODEL MERGES THIS COLD FRONT WITH THE NEXT ONE BY LATE THIS
AFTERNOON. RAIN WILL PERSIST THROUGH SATURDAY...ESPECIALLY OVER
OREGON...AND MIX WITH AND THEN CHANGE TO SNOW BY LATE SATURDAY.
DRIER AND MUCH COLDER WILL FILTER SOUTHWARD OUT OF CANADA ON
SATURDAY NIGHT INTO SUNDAY WITH HIGH TEMPERATURES ABOUT 25 TO 30
DEGREES COOLER THAN TODAY. AN ARCTIC AIR MASS WILL MOVE INTO THE
REGION AND CWA LATE SATURDAY NIGHT INTO SUNDAY. TEMPERATURES ON
SUNDAY ARE EXPECTED TO REMAIN BELOW FREEZING CWA WIDE. VERY COLD BUT
DRY CONDITIONS ARE EXPECTED TO PERSIST INTO THE EXTENDED PERIOD.
WINDS WILL BE LOCALLY BREEZY AT TIMES THROUGH THE SHORT TERM
PERIOD...BUT THE WIND SPEEDS WILL REMAIN BELOW ADVISORY SPEEDS. 88

.LONG TERM...SUNDAY NIGHT THROUGH THURSDAY...HAVE MADE FEW CHANGES
TO THE EXTENDED FORECAST AS MODELS CONTINUE TO DISAGREE WITH THE
AMOUNT OF MOISTURE MOVING NORTHWARD INTO THE AREA AS WELL AS THE
TIMING. HAVE CONTINUED TO LEAN TOWARD THE EUROPEAN WITH MOISTURE
MOVING NORTHWARD FROM CENTRAL OREGON SUNDAY NIGHT TO THE REST OF THE
AREA BY MONDAY. SNOW LEVELS REMAIN LOW WITH MOST OF THE AREA SEEING
SNOW. THE NEXT ROUND OF PRECIPITATION WILL BE ON WEDNESDAY WITH
RISING SNOW LEVELS. THIS COULD LEAD TO SNOW TRANSITIONING TO RAIN
DURING THE DAY. HOWEVER...IF THE COLD AIR IN THE LOWER ELEVATIONS
REMAIN IN PLACE AS THE WARM AIR MOVES ALOFT...THERE COULD BE A
POTENTIAL FOR BRIEF FREEZING RAIN. WILL CONTINUE TO MONITOR THE
SITUATION. TEMPERATURES DURING THE PERIOD WILL BE BELOW NORMAL. DMH

&&

.AVIATION...12Z TAFS...LIGHT RAIN WILL CONTINUE TO MOVE SLOWLY
NORTHWARD ACROSS THE REGION. SHOWERS WILL INCREASE THIS AFTERNOON
WITH A FRONTAL SYSTEM...WITH SOME RAIN SHADOWING EAST OF THE
CASCADES FOR KYKM AND KPSC. WINDS WILL BECOME BREEZY TODAY WITH
15-25 KTS BY THIS AFTERNOON. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  35  34  14 /  60  80  50  20
ALW  62  37  36  16 /  70  80  50  20
PSC  59  35  37  17 /  30  50  20  10
YKM  53  32  31  12 /  30  30  20   0
HRI  59  36  37  15 /  40  60  20  10
ELN  50  28  27  12 /  40  40  20   0
RDM  55  34  33   8 /  50  70  50  20
LGD  51  38  39  12 /  70  80  70  30
GCD  52  35  34  11 /  60  60  70  30
DLS  54  36  37  23 /  60  70  20  10

&&

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

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

$$

88/84/84








000
FXUS66 KPDT 280905
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
105 AM PST FRI NOV 28 2014

.SHORT TERM...TODAY THROUGH SUNDAY...A COUPLE OF COLD FRONTS ARE
EXPECTED TO MOVE ACROSS THE PACIFIC NORTHWEST DURING THE NEXT COUPLE
OF DAYS. THE FIRST FRONT RUNS FROM EAST CENTRAL OREGON SOUTHWEST TO
SOUTHWEST OREGON AT THIS TIME. THE MOISTURE ASSOCIATED WITH THIS
FRONT IS SHOWN ON RADAR MOVING ACROSS CENTRAL AND NORTHEAST OREGON.
MUCH OF THE PRECIPITATION IS NOT REACHING THE GROUND HOWEVER. THE
GFS MODEL MERGES THIS COLD FRONT WITH THE NEXT ONE BY LATE THIS
AFTERNOON. RAIN WILL PERSIST THROUGH SATURDAY...ESPECIALLY OVER
OREGON...AND MIX WITH AND THEN CHANGE TO SNOW BY LATE SATURDAY.
DRIER AND MUCH COLDER WILL FILTER SOUTHWARD OUT OF CANADA ON
SATURDAY NIGHT INTO SUNDAY WITH HIGH TEMPERATURES ABOUT 25 TO 30
DEGREES COOLER THAN TODAY. AN ARCTIC AIR MASS WILL MOVE INTO THE
REGION AND CWA LATE SATURDAY NIGHT INTO SUNDAY. TEMPERATURES ON
SUNDAY ARE EXPECTED TO REMAIN BELOW FREEZING CWA WIDE. VERY COLD BUT
DRY CONDITIONS ARE EXPECTED TO PERSIST INTO THE EXTENDED PERIOD.
WINDS WILL BE LOCALLY BREEZY AT TIMES THROUGH THE SHORT TERM
PERIOD...BUT THE WIND SPEEDS WILL REMAIN BELOW ADVISORY SPEEDS. 88

.LONG TERM...SUNDAY NIGHT THROUGH THURSDAY...HAVE MADE FEW CHANGES
TO THE EXTENDED FORECAST AS MODELS CONTINUE TO DISAGREE WITH THE
AMOUNT OF MOISTURE MOVING NORTHWARD INTO THE AREA AS WELL AS THE
TIMING. HAVE CONTINUED TO LEAN TOWARD THE EUROPEAN WITH MOISTURE
MOVING NORTHWARD FROM CENTRAL OREGON SUNDAY NIGHT TO THE REST OF THE
AREA BY MONDAY. SNOW LEVELS REMAIN LOW WITH MOST OF THE AREA SEEING
SNOW. THE NEXT ROUND OF PRECIPITATION WILL BE ON WEDNESDAY WITH
RISING SNOW LEVELS. THIS COULD LEAD TO SNOW TRANSITIONING TO RAIN
DURING THE DAY. HOWEVER...IF THE COLD AIR IN THE LOWER ELEVATIONS
REMAIN IN PLACE AS THE WARM AIR MOVES ALOFT...THERE COULD BE A
POTENTIAL FOR BRIEF FREEZING RAIN. WILL CONTINUE TO MONITOR THE
SITUATION. TEMPERATURES DURING THE PERIOD WILL BE BELOW NORMAL. DMH

&&

.AVIATION...06Z TAFS (PREVIOUS DISCUSSION). LIGHT RAIN SHOWERS WILL
CONTINUE OVERNIGHT FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST
WASHINGTON WITH GENERALLY VFR CONDITIONS AND GUSTY WINDS. THE
FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA ON FRIDAY...WITH SOME
RAIN SHADOWING EAST OF THE CASCADES FOR KYKM AND KPSC. WINDS WILL BE
SOUTHWEST 5-20 KTS OVERNIGHT AND WILL INCREASE 15-25 KTS REGION WIDE
ON FRIDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  35  34  14 /  60  80  50  20
ALW  62  37  36  16 /  70  80  50  20
PSC  59  35  37  17 /  30  50  20  10
YKM  53  32  31  12 /  30  30  20   0
HRI  59  36  37  15 /  40  60  20  10
ELN  50  28  27  12 /  40  40  20   0
RDM  55  34  33   8 /  50  70  50  20
LGD  51  38  39  12 /  70  80  70  30
GCD  52  35  34  11 /  60  60  70  30
DLS  54  36  37  23 /  60  70  20  10

&&

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

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

$$

88/84/84









000
FXUS66 KPDT 280523 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
923 PM PST THU NOV 27 2014

UPDATED AVIATION DISCUSSION

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.AVIATION...06Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THE FRONTAL SYSTEM WILL
CONTINUE ACROSS THE AREA ON FRIDAY...WITH SOME RAIN SHADOWING EAST
OF THE CASCADES FOR KYKM AND KPSC. WINDS WILL BE SOUTHWEST 5-20 KTS
OVERNIGHT AND WILL INCREASE 15-25 KTS REGION WIDE ON FRIDAY. 76

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76










000
FXUS66 KPDT 280523 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
923 PM PST THU NOV 27 2014

UPDATED AVIATION DISCUSSION

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.AVIATION...06Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THE FRONTAL SYSTEM WILL
CONTINUE ACROSS THE AREA ON FRIDAY...WITH SOME RAIN SHADOWING EAST
OF THE CASCADES FOR KYKM AND KPSC. WINDS WILL BE SOUTHWEST 5-20 KTS
OVERNIGHT AND WILL INCREASE 15-25 KTS REGION WIDE ON FRIDAY. 76

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76









000
FXUS66 KPDT 280352
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 PM PST THU NOV 27 2014

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

AVIATION...00Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THERE MAY BE SOME MVFR IN
HEAVY RAIN AT KPDT AND KALW FROM 08-11Z AS SOME BANDS OF HEAVIER
RAIN MOVE THROUGH. THE FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA
ON FRIDAY...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM...KRDM AND KBDN. WINDS WILL BE SOUTHWEST 10-15 KTS OVERNIGHT
AND WILL INCREASE 15-25KTS REGION WIDE ON FRIDAY. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76






000
FXUS66 KPDT 280352
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 PM PST THU NOV 27 2014

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

AVIATION...00Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THERE MAY BE SOME MVFR IN
HEAVY RAIN AT KPDT AND KALW FROM 08-11Z AS SOME BANDS OF HEAVIER
RAIN MOVE THROUGH. THE FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA
ON FRIDAY...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM...KRDM AND KBDN. WINDS WILL BE SOUTHWEST 10-15 KTS OVERNIGHT
AND WILL INCREASE 15-25KTS REGION WIDE ON FRIDAY. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76







000
FXUS66 KPDT 280352
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 PM PST THU NOV 27 2014

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

AVIATION...00Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THERE MAY BE SOME MVFR IN
HEAVY RAIN AT KPDT AND KALW FROM 08-11Z AS SOME BANDS OF HEAVIER
RAIN MOVE THROUGH. THE FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA
ON FRIDAY...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM...KRDM AND KBDN. WINDS WILL BE SOUTHWEST 10-15 KTS OVERNIGHT
AND WILL INCREASE 15-25KTS REGION WIDE ON FRIDAY. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76






000
FXUS66 KPDT 280352
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
752 PM PST THU NOV 27 2014

.UPDATE...CURRENTLY RADAR AND OBSERVATIONS SHOW SPOTTY SHOWERS IN
OREGON. A FRONTAL BAND IS STALLED FROM CENTRAL OREGON TO
NORTHEAST OREGON MOUNTAINS. A VORT MAX MOVING ALONG THIS BOUNDARY
WILL INCREASE THE SHOWERS IN EASTERN OREGON LATER TONIGHT. A LOW
OVER BRITISH COLUMBIA IS DEEPENING AS IT MOVES EAST. THIS IS
INCREASING THE PRESSURE GRADIENT OVER EASTERN WASHINGTON. A TIGHT
PRESSURE GRADIENT ALREADY EXISTS IN CENTRAL TO NORTHEAST OREGON.
THESE TWO SYSTEMS ARE CREATING SPORADIC SOUTHWEST WINDS 5 TO 25
MPH WITH HIGHER GUSTS. THESE TRENDS ARE COVERED IN THE CURRENT
FORECAST.  COONFIELD

&&

.PREV DISC... /ISSUED 244 PM PST THU NOV 27 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

AVIATION...00Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THERE MAY BE SOME MVFR IN
HEAVY RAIN AT KPDT AND KALW FROM 08-11Z AS SOME BANDS OF HEAVIER
RAIN MOVE THROUGH. THE FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA
ON FRIDAY...WITH SOME RAIN SHADOWING EAST OF THE CASCADES FOR
KYKM...KRDM AND KBDN. WINDS WILL BE SOUTHWEST 10-15 KTS OVERNIGHT
AND WILL INCREASE 15-25KTS REGION WIDE ON FRIDAY. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

76/76/76







000
FXUS66 KPDT 272244
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
244 PM PST THU NOV 27 2014

.SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...UPPER LEVEL HIGH
PRESSURE OVER THE PACIFIC NORTHWEST WILL GRADUALLY FLATTEN TONIGHT
AND FRIDAY AS AN UPPER TROUGH DEVELOPS OVER SOUTHWESTERN CANADA.
THIS WILL RESULT IN A CONTINUED ONSHORE FLOW ACROSS THE PACNW
TONIGHT. AS SUCH WILL CONTINUE TO SEE ISOLATED TO SCATTERED SHOWERS
AT TIMES OVER MUCH OF THE INTERIOR NORTHWEST. SHOWERS ARE EXPECTED
TO BECOME NUMEROUS OVER THE BLUE MOUNTAINS LATER TONIGHT, WHILE
NUMEROUS SHOWERS WILL PERSIST THROUGH THE NIGHT ALONG THE CASCADE
EAST SLOPES. AN AREA OF SURFACE LOW PRESSURE WILL DEVELOP ACROSS
SOUTHERN BRITISH COLUMBIA TONIGHT. THIS LOW PRESSURE WILL SLOWLY
SLIDE SOUTH INTO WASHINGTON STATE FRIDAY. INCREASED SURFACE PRESSURE
IN WASHINGTON FRIDAY WILL RESULT IN SUSTAINED WINDS BECOMING 15 TO
30 MPH ACROSS MUCH OF THE AREA. AT THIS TIME DO NOT EXPECT ANY
HIGHLIGHTS FOR THIS WIND, THOUGH GUSTY WINDS OF 20 TO 30 MPH WILL BE
POSSIBLE OVER SOUTHEAST WASHINGTON. CHANCES OF SHOWERS WILL CONTINUE
FRIDAY DUE TO A CONTINUATION OF THE ONSHORE FLOW. THE MAIN PORTION
OF THE WASHINGTON SURFACE LOW WILL SWING INTO NORTHERN IDAHO FRIDAY
NIGHT. THIS WILL RESULT IN A COLD FRONT, WITH MARINE POLAR AIR
BEHIND IT, MOVING ACROSS THE REGION. THIS WILL CAUSE SNOW LEVELS TO
BEGIN TO FALL EARLY IN THE MORNING SATURDAY. THIS FRONT WILL BE
FOLLOWED BY AN ARCTIC COLD FRONT THAT IS EXPECTED TO BE INTO
KITTITAS COUNTY BY DAYBREAK SATURDAY. AT THIS TIME SNOW
ACCUMULATIONS WILL MAINLY BE LIGHT LATE IN THE FRIDAY NIGHT PERIOD.
90

.LONG TERM...SATURDAY THROUGH MONDAY NIGHT.  A TROUGH OF LOW
PRESSURE CONTINUES TO DROP SOUTH OVER THE REGION ON SATURDAY,
BRINGING MUCH COLDER AIR AND SOME LIGHT SNOW ACROSS THE NORTHERN
PORTION OF THE FORECAST AREA AND OVER THE MOUNTAINS. THE HIGH
TEMPERATURES ON SATURDAY WILL LIKELY BE IN THE MORNING AND THEN FALL
THROUGH THE DAY.  THE COLD AIR SETTLES INTO THE AREA ON SUNDAY AS
NORTHWEST FLOW PROVIDES SOME LIFT OVER THE BLUE MOUNTAINS WITH SOME
SNOW SHOWERS. THE GFS IS MUCH MORE AGGRESSIVE IN BRINGING MOISTURE
BACK NORTH ACROSS THE REGION ON MONDAY WHILE THE ECMWF AND CANADIAN
MODELS HOLD THE MOISTURE WELL SOUTH AND THEN JUST WASH IT OUT.  HAVE
TRENDED TOWARD THE ECMWF FOR THE MONDAY TIME FRAME AND HAVE
DECREASED THE CHANCE OF SNOW/RAIN FOR THE AREA. ML

TUESDAY MORNING THROUGH THROUGH THURSDAY NIGHT...UNFORTUNATELY THE
PERIOD STARTS OFF WITH SOME MAJOR DIFFERENCES BETWEEN MODELS ACROSS
THE REGION. THE LATEST GFS TRIES TO LINGER A PLUME OF MOISTURE
ACROSS AT LEAST THE SOUTHERN TWO-THIRDS OF THE CWA ON TUESDAY...
WHILE THE LATEST ECMWF MODEL IS MUCH SLOWER WITH THE OFFSHORE SYSTEM
MOVING EAST AND HOLDS OFF ANY PRECIP UNTIL AT LEAST WEDNESDAY
MORNING. TOUGH TO SAY WHICH SOLUTION WILL END UP BEING CORRECT AT
THIS POINT...ALTHOUGH AFTER COLLABORATION WITH SURROUNDING OFFICES
DECIDED TO LEAN MORE TOWARD THE SLOWER ECMWF SOLUTION...SINCE IT HAS
BEEN MORE CONSISTENT AND SEEMS TO MAKE A BIT MORE SENSE AS FAR AS
THE GENERAL METEOROLOGICAL SETUP. ASSUMING THE ECMWF IS MORE CORRECT
IN THIS PERIOD...WE WILL NEED TO WATCH FOR INCREASING PRECIP CHANCES
IN THE WEDNESDAY THROUGH THURSDAY NIGHT PERIOD AS THE UPPER LEVEL
LOW AND ASSOCIATED MOISTURE MOVE THROUGH THE REGION. ANOTHER
NOTE...AS WARMER PACIFIC AIR ATTEMPTS TO OVERRIDE THE STUBBORN
ARCTIC AIR THAT WILL BE IN PLACE EARLY IN THE WEEK FREEZING RAIN MAY
BECOME AN ISSUE...ESPECIALLY IN THE BASINS OF NORTHERN OREGON AND
SOUTHERN WASHINGTON WEDNESDAY INTO THURSDAY NIGHT. ALTHOUGH FREEZING
RAIN COULD BECOME AN ISSUE I DID NOT HAVE QUITE ENOUGH CONFIDENCE TO
INCLUDE IN THE FORECAST JUST YET...WILL CERTAINLY NEED TO KEEP A
CLOSE EYE ON THIS POSSIBLE HAZARD THOUGH. GENERALLY STAYED UNDER
GUIDANCE WITH THE TEMPERATURES THROUGH THE PERIOD...AS GUIDANCE
SEEMED TO UNDERESTIMATE JUST HOW STUBBORN THE COLD ARCTIC ORIGIN AIR
CAN BE IN OUR AREA. 77

&&

.AVIATION...00Z TAFS. LIGHT RAIN SHOWERS WILL CONTINUE OVERNIGHT
FROM CENTRAL OREGON NORTHWEST INTO SOUTHEAST WASHINGTON WITH
GENERALLY VFR CONDITIONS AND GUSTY WINDS. THERE MAY BE SOME MVFR IN
HEAVY RAIN AT KPDT AND KALW FROM 08-11Z AS SOME BANDS OF HEAVIER
RAIN MOVE THROUGH. THE FRONTAL SYSTEM WILL CONTINUE ACROSS THE AREA
ON FRIDAY...WITH SOME RAINSHADOWING EAST OF THE CASCADES FOR
KYKM...KRDM AND KBDN. WINDS WILL BE SOUTHWEST 10-15 KTS OVERNIGHT
AND WILL INCREASE 15-25KTS REGIONWIDE ON FRIDAY. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  47  61  35  36 /  20  60  80  50
ALW  50  60  37  38 /  30  70  80  50
PSC  48  60  35  39 /  20  30  50  20
YKM  38  54  32  33 /  20  30  30  20
HRI  45  60  36  39 /  20  40  60  20
ELN  38  51  28  29 /  30  40  40  20
RDM  40  56  34  35 /  40  50  70  50
LGD  43  52  38  41 /  40  70  80  70
GCD  42  53  35  36 /  40  60  60  70
DLS  45  55  36  39 /  40  60  70  20

&&

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

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

$$

90/93/77/93








000
FXUS66 KPDT 271759
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
959 AM PST THU NOV 27 2014

.SHORT TERM...MORNING UPDATE...REGION TO REMAIN UNDER AN UPPER LEVEL
RIDGE TODAY AND TONIGHT. MEANWHILE A WEAK DISTURBANCE WILL MOVE
THROUGH THE RIDGE AND ACROSS THE PACNW. AS SUCH WILL SEE ISOLATED TO
SCATTERED SHOWERS OVER MUCH OF THE AREA, ESPECIALLY IN OREGON.
HIGHER SHOWER CHANCES WILL PERSIST ALONG THE CASCADE CREST DUE TO
ADDITIONAL TERRAIN ENHANCEMENT ALONG THE WESTERN SLOPES. TEMPS WILL
CONTINUE WELL ABOVE SEASONAL. LOCALLY BREEZY CONDITIONS WILL
CONTINUE IN THE SOUTHERN GRANDE RONDE VALLEY DUE TO A STRONG
TEMPERATURE GRADIENT BETWEEN THE GRANDE RONDE AND BAKER VALLEYS.
ALSO BREEZY DOWNSLOPE INDUCED WINDS WILL CONTINUE IN CENTRAL OREGON
AND THE YAKIMA VALLEY. FOG CONTINUES TO LIFT IN THE KITTITAS AND THE
ADVISORY WILL BE ALLOWED TO EXPIRE AT 10 AM. UPDATES INCLUDED
INCREASING WINDS IN CENTRAL OREGON AND THE YAKIMA VALLEY, AND
ADJUSTING PRECIP CHANCES AND HIGH TEMPS. 90

.LONG TERM...PREVIOUS DISCUSSION...THE 00Z GFS AND ECMWF MODEL RUNS
ARE CONSISTENT WITH YESTERDAY`S 00Z RUNS IN SHOWING A PROGRESSIVE
MID/UPPER LEVEL TROUGH MOVING ACROSS PACIFIC NORTHWEST SATURDAY
NIGHT WITH MAIN CHANCE FOR PRECIPITATION IN THE EVENING WITH POPS
DECREASING TO LESS THAN 15 PERCENT BY MIDNIGHT. SNOW LEVELS WILL
CONTINUE NEAR TERRAIN FLOOR ACROSS THE ENTIRE FORECAST AREA ON
SUNDAY. THE TROUGH DROPPING OUT OF BRITISH COLUMBIA BRINGS AN ARCTIC
AIRMASS INTO THE REGION FOR SUNDAY AND MONDAY. HIGH TEMPS ON
SUNDAY/MONDAY WILL BE IN THE UPPER 20S TO LOWER 30S. THE NEXT
PACIFIC TROUGH TAKES SHAPE NEAR 130-140W ON SUNDAY AND THIS SYSTEM
LOOKS TO MOVE INTO CALIFORNIA ON MONDAY AND TUESDAY.

&&

.AVIATION...18Z TAFS...LIGHT RAIN WILL BE SPREADING ACROSS REGION
WITH CIGS AOA 5K FT AGL TO KBDN, KRDM, KPDT AND KALW AFTER 27/20Z.
LIGHT RAIN WILL CONTINUE OVERNIGHT WITH SOME MVFR CEILINGS IN HEAVY
RAIN AT KPDT AND KALW BETWEEN 08-12Z. SOUTH TO SOUTHWEST WIND 15-25
KTS WILL CONTINUE JUST EAST OF THE CASCADES THROUGH 23Z WITH
SOUTHWEST 10-15 KTS ELSEWHERE. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  45  59  34 /  20  20  60  80
ALW  62  48  58  36 /  20  20  70  80
PSC  61  45  60  35 /  10  20  30  50
YKM  57  36  53  27 /  10  20  30  30
HRI  58  45  60  35 /  20  20  40  60
ELN  50  37  52  27 /  20  30  40  30
RDM  58  37  58  33 /  20  20  50  70
LGD  57  40  51  36 /  30  30  70  80
GCD  57  40  51  35 /  20  40  60  70
DLS  60  44  56  37 /  20  30  70  80

&&

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

&&

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

$$

90/99/93









000
FXUS66 KPDT 271759
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
959 AM PST THU NOV 27 2014

.SHORT TERM...MORNING UPDATE...REGION TO REMAIN UNDER AN UPPER LEVEL
RIDGE TODAY AND TONIGHT. MEANWHILE A WEAK DISTURBANCE WILL MOVE
THROUGH THE RIDGE AND ACROSS THE PACNW. AS SUCH WILL SEE ISOLATED TO
SCATTERED SHOWERS OVER MUCH OF THE AREA, ESPECIALLY IN OREGON.
HIGHER SHOWER CHANCES WILL PERSIST ALONG THE CASCADE CREST DUE TO
ADDITIONAL TERRAIN ENHANCEMENT ALONG THE WESTERN SLOPES. TEMPS WILL
CONTINUE WELL ABOVE SEASONAL. LOCALLY BREEZY CONDITIONS WILL
CONTINUE IN THE SOUTHERN GRANDE RONDE VALLEY DUE TO A STRONG
TEMPERATURE GRADIENT BETWEEN THE GRANDE RONDE AND BAKER VALLEYS.
ALSO BREEZY DOWNSLOPE INDUCED WINDS WILL CONTINUE IN CENTRAL OREGON
AND THE YAKIMA VALLEY. FOG CONTINUES TO LIFT IN THE KITTITAS AND THE
ADVISORY WILL BE ALLOWED TO EXPIRE AT 10 AM. UPDATES INCLUDED
INCREASING WINDS IN CENTRAL OREGON AND THE YAKIMA VALLEY, AND
ADJUSTING PRECIP CHANCES AND HIGH TEMPS. 90

.LONG TERM...PREVIOUS DISCUSSION...THE 00Z GFS AND ECMWF MODEL RUNS
ARE CONSISTENT WITH YESTERDAY`S 00Z RUNS IN SHOWING A PROGRESSIVE
MID/UPPER LEVEL TROUGH MOVING ACROSS PACIFIC NORTHWEST SATURDAY
NIGHT WITH MAIN CHANCE FOR PRECIPITATION IN THE EVENING WITH POPS
DECREASING TO LESS THAN 15 PERCENT BY MIDNIGHT. SNOW LEVELS WILL
CONTINUE NEAR TERRAIN FLOOR ACROSS THE ENTIRE FORECAST AREA ON
SUNDAY. THE TROUGH DROPPING OUT OF BRITISH COLUMBIA BRINGS AN ARCTIC
AIRMASS INTO THE REGION FOR SUNDAY AND MONDAY. HIGH TEMPS ON
SUNDAY/MONDAY WILL BE IN THE UPPER 20S TO LOWER 30S. THE NEXT
PACIFIC TROUGH TAKES SHAPE NEAR 130-140W ON SUNDAY AND THIS SYSTEM
LOOKS TO MOVE INTO CALIFORNIA ON MONDAY AND TUESDAY.

&&

.AVIATION...18Z TAFS...LIGHT RAIN WILL BE SPREADING ACROSS REGION
WITH CIGS AOA 5K FT AGL TO KBDN, KRDM, KPDT AND KALW AFTER 27/20Z.
LIGHT RAIN WILL CONTINUE OVERNIGHT WITH SOME MVFR CEILINGS IN HEAVY
RAIN AT KPDT AND KALW BETWEEN 08-12Z. SOUTH TO SOUTHWEST WIND 15-25
KTS WILL CONTINUE JUST EAST OF THE CASCADES THROUGH 23Z WITH
SOUTHWEST 10-15 KTS ELSEWHERE. ML

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  63  45  59  34 /  20  20  60  80
ALW  62  48  58  36 /  20  20  70  80
PSC  61  45  60  35 /  10  20  30  50
YKM  57  36  53  27 /  10  20  30  30
HRI  58  45  60  35 /  20  20  40  60
ELN  50  37  52  27 /  20  30  40  30
RDM  58  37  58  33 /  20  20  50  70
LGD  57  40  51  36 /  30  30  70  80
GCD  57  40  51  35 /  20  40  60  70
DLS  60  44  56  37 /  20  30  70  80

&&

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

&&

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

$$

90/99/93








000
FXUS66 KPDT 271201 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PST THU NOV 27 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SATURDAY...LOCALLY DENSE FOG IS
PERSISTING IN THE LOWER COLUMBIA BASIN OF WASHINGTON AND THE
KITTITAS VALLEY AT THIS TIME. A DENSE FOG ADVISORY CONTINUES IN
EFFECT FOR THESE AREAS UNTIL 10 AM. THIS STILL LOOKS GOOD. OTHERWISE
AN UPPER RIDGE OVER THE REGION IS WEAKENING AND FLATTENING OUT. THIS
IS ALLOWING MOISTURE TO MOVE INTO THE REGION FROM THE PACIFIC WITH A
WEAK COLD FRONT. SO FAR...RADAR HAS SHOWN THE PRECIPITATION TO BE
MAINLY OVER THE CASCADE CREST AND EAST SLOPES...WITH DOWNSLOPE
DRYING ON THE LEE OF THE CASCADES AND IN THE VALLEYS TO THE EAST.
THE AIR MASS IS QUITE MILD WITH HIGH SNOW LEVELS SO SNOW WILL NOT BE
A CONCERN WITH THIS PRECIPITATION EVENT. THE COLD FRONT WILL EXIT
THE AREA BY FRIDAY MORNING. THEN ANOTHER COLD FRONT WITH MUCH COLDER
AIR BEHIND IT WILL DROP DOWN OUT OF CANADA FRIDAY NIGHT INTO
SATURDAY. COLD ARCTIC AIR WILL MOVE INTO THE FORECAST AREA AND
REGION ON SATURDAY WITH DRIER AIR. THEREFORE THE PRECIPITATION WILL
DECREASE AND TEMPERATURES WILL TURN MUCH COLDER. THERE WILL BE SOME
LINGERING RAIN SHOWERS CHANGING TO SNOW SHOWERS OVER THE MOUNTAINS
ON SATURDAY WITH LITTLE IF ANY SNOW ACCUMULATION. IN THE LOWER
ELEVATIONS IT WILL JUST GET COLDER WITH A DRY ARCTIC AIR MASS MOVING
INTO THE CWA. THE COLD AIR WILL CONTINUE INTO THE EXTENDED PERIOD
WITH DRY CONDITIONS. WINDS WILL BE LOCALLY BREEZY THROUGH THE SHORT
TERM PERIOD...ESPECIALLY OVER THE RIDGE TOPS AND OVER OPEN TERRAIN.
88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE 00Z GFS AND
ECMWF MODEL RUNS ARE CONSISTENT WITH YESTERDAY`S 00Z RUNS IN SHOWING
A PROGRESSIVE MID/UPPER LEVEL TROUGH MOVING ACROSS PACIFIC NORTHWEST
SATURDAY NIGHT WITH MAIN CHANCE FOR PRECIPITATION IN THE EVENING
WITH POPS DECREASING TO LESS THAN 15 PERCENT BY MIDNIGHT. SNOW
LEVELS WILL CONTINUE NEAR TERRAIN FLOOR ACROSS THE ENTIRE FORECAST
AREA ON SUNDAY. THE TROUGH DROPPING OUT OF BRITISH COLUMBIA BRINGS
AN ARCTIC AIRMASS INTO THE REGION FOR SUNDAY AND MONDAY. HIGH TEMPS
ON SUNDAY/MONDAY WILL BE IN THE UPPER 20S TO LOWER 30S. THE NEXT
PACIFIC TROUGH TAKES SHAPE NEAR 130-140W ON SUNDAY AND THIS SYSTEM
LOOKS TO MOVE INTO CALIFORNIA ON MONDAY AND TUESDAY.  POLAN

&&

.AVIATION...12Z TAFS...ALL TAF SITES WILL HAVE VFR FOR THE NEXT 24
HOURS. INCREASING SOUTHERLY WINDS BEFORE DAYBREAK THIS MORNING,
ASSOCIATED WITH A PASSING DISTURBANCE, ARE SCOURING OUT FOG AND LOW
STRATUS CLOUDS IN THE LOWER COLUMBIA BASIN AND THE YAKIMA VALLEY.
THE DISTURBANCE MAY ALSO BRING RAIN SHOWERS WITH CIGS AOA 5K FT AGL
TO KBDN, KRDM, KPDT AND KALW AFTER 27/20Z. WINDS WILL BE INCREASING
A TAD THIS AFTERNOON FOR SUSTAINED WINDS OF 10-15 KTS WITH GUSTS AT
KRDM REACHING AROUND 20 KTS TODAY.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  45  59  34 /  10  20  60  80
ALW  60  48  58  36 /  20  20  70  80
PSC  59  45  60  35 /  10  20  30  50
YKM  54  36  53  27 /  10  20  30  30
HRI  60  45  60  35 /  10  20  40  60
ELN  53  37  52  27 /  20  30  40  30
RDM  58  37  58  33 /  10  20  50  70
LGD  52  40  51  36 /  30  30  70  80
GCD  54  40  51  35 /  20  40  60  70
DLS  59  44  56  37 /  20  30  70  80

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING WAZ026-028.

&&

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

$$

88/99/99







000
FXUS66 KPDT 271201 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PST THU NOV 27 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH SATURDAY...LOCALLY DENSE FOG IS
PERSISTING IN THE LOWER COLUMBIA BASIN OF WASHINGTON AND THE
KITTITAS VALLEY AT THIS TIME. A DENSE FOG ADVISORY CONTINUES IN
EFFECT FOR THESE AREAS UNTIL 10 AM. THIS STILL LOOKS GOOD. OTHERWISE
AN UPPER RIDGE OVER THE REGION IS WEAKENING AND FLATTENING OUT. THIS
IS ALLOWING MOISTURE TO MOVE INTO THE REGION FROM THE PACIFIC WITH A
WEAK COLD FRONT. SO FAR...RADAR HAS SHOWN THE PRECIPITATION TO BE
MAINLY OVER THE CASCADE CREST AND EAST SLOPES...WITH DOWNSLOPE
DRYING ON THE LEE OF THE CASCADES AND IN THE VALLEYS TO THE EAST.
THE AIR MASS IS QUITE MILD WITH HIGH SNOW LEVELS SO SNOW WILL NOT BE
A CONCERN WITH THIS PRECIPITATION EVENT. THE COLD FRONT WILL EXIT
THE AREA BY FRIDAY MORNING. THEN ANOTHER COLD FRONT WITH MUCH COLDER
AIR BEHIND IT WILL DROP DOWN OUT OF CANADA FRIDAY NIGHT INTO
SATURDAY. COLD ARCTIC AIR WILL MOVE INTO THE FORECAST AREA AND
REGION ON SATURDAY WITH DRIER AIR. THEREFORE THE PRECIPITATION WILL
DECREASE AND TEMPERATURES WILL TURN MUCH COLDER. THERE WILL BE SOME
LINGERING RAIN SHOWERS CHANGING TO SNOW SHOWERS OVER THE MOUNTAINS
ON SATURDAY WITH LITTLE IF ANY SNOW ACCUMULATION. IN THE LOWER
ELEVATIONS IT WILL JUST GET COLDER WITH A DRY ARCTIC AIR MASS MOVING
INTO THE CWA. THE COLD AIR WILL CONTINUE INTO THE EXTENDED PERIOD
WITH DRY CONDITIONS. WINDS WILL BE LOCALLY BREEZY THROUGH THE SHORT
TERM PERIOD...ESPECIALLY OVER THE RIDGE TOPS AND OVER OPEN TERRAIN.
88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE 00Z GFS AND
ECMWF MODEL RUNS ARE CONSISTENT WITH YESTERDAY`S 00Z RUNS IN SHOWING
A PROGRESSIVE MID/UPPER LEVEL TROUGH MOVING ACROSS PACIFIC NORTHWEST
SATURDAY NIGHT WITH MAIN CHANCE FOR PRECIPITATION IN THE EVENING
WITH POPS DECREASING TO LESS THAN 15 PERCENT BY MIDNIGHT. SNOW
LEVELS WILL CONTINUE NEAR TERRAIN FLOOR ACROSS THE ENTIRE FORECAST
AREA ON SUNDAY. THE TROUGH DROPPING OUT OF BRITISH COLUMBIA BRINGS
AN ARCTIC AIRMASS INTO THE REGION FOR SUNDAY AND MONDAY. HIGH TEMPS
ON SUNDAY/MONDAY WILL BE IN THE UPPER 20S TO LOWER 30S. THE NEXT
PACIFIC TROUGH TAKES SHAPE NEAR 130-140W ON SUNDAY AND THIS SYSTEM
LOOKS TO MOVE INTO CALIFORNIA ON MONDAY AND TUESDAY.  POLAN

&&

.AVIATION...12Z TAFS...ALL TAF SITES WILL HAVE VFR FOR THE NEXT 24
HOURS. INCREASING SOUTHERLY WINDS BEFORE DAYBREAK THIS MORNING,
ASSOCIATED WITH A PASSING DISTURBANCE, ARE SCOURING OUT FOG AND LOW
STRATUS CLOUDS IN THE LOWER COLUMBIA BASIN AND THE YAKIMA VALLEY.
THE DISTURBANCE MAY ALSO BRING RAIN SHOWERS WITH CIGS AOA 5K FT AGL
TO KBDN, KRDM, KPDT AND KALW AFTER 27/20Z. WINDS WILL BE INCREASING
A TAD THIS AFTERNOON FOR SUSTAINED WINDS OF 10-15 KTS WITH GUSTS AT
KRDM REACHING AROUND 20 KTS TODAY.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  45  59  34 /  10  20  60  80
ALW  60  48  58  36 /  20  20  70  80
PSC  59  45  60  35 /  10  20  30  50
YKM  54  36  53  27 /  10  20  30  30
HRI  60  45  60  35 /  10  20  40  60
ELN  53  37  52  27 /  20  30  40  30
RDM  58  37  58  33 /  10  20  50  70
LGD  52  40  51  36 /  30  30  70  80
GCD  54  40  51  35 /  20  40  60  70
DLS  59  44  56  37 /  20  30  70  80

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING WAZ026-028.

&&

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

$$

88/99/99








000
FXUS66 KPDT 271102
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PST THU NOV 27 2014

.SHORT TERM...TODAY THROUGH SATURDAY...LOCALLY DENSE FOG IS
PERSISTING IN THE LOWER COLUMBIA BASIN OF WASHINGTON AND THE
KITTITAS VALLEY AT THIS TIME. A DENSE FOG ADVISORY CONTINUES IN
EFFECT FOR THESE AREAS UNTIL 10 AM. THIS STILL LOOKS GOOD. OTHERWISE
AN UPPER RIDGE OVER THE REGION IS WEAKENING AND FLATTENING OUT. THIS
IS ALLOWING MOISTURE TO MOVE INTO THE REGION FROM THE PACIFIC WITH A
WEAK COLD FRONT. SO FAR...RADAR HAS SHOWN THE PRECIPITATION TO BE
MAINLY OVER THE CASCADE CREST AND EAST SLOPES...WITH DOWNSLOPE
DRYING ON THE LEE OF THE CASCADES AND IN THE VALLEYS TO THE EAST.
THE AIR MASS IS QUITE MILD WITH HIGH SNOW LEVELS SO SNOW WILL NOT BE
A CONCERN WITH THIS PRECIPITATION EVENT. THE COLD FRONT WILL EXIT
THE AREA BY FRIDAY MORNING. THEN ANOTHER COLD FRONT WITH MUCH COLDER
AIR BEHIND IT WILL DROP DOWN OUT OF CANADA FRIDAY NIGHT INTO
SATURDAY. COLD ARCTIC AIR WILL MOVE INTO THE FORECAST AREA AND
REGION ON SATURDAY WITH DRIER AIR. THEREFORE THE PRECIPITATION WILL
DECREASE AND TEMPERATURES WILL TURN MUCH COLDER. THERE WILL BE SOME
LINGERING RAIN SHOWERS CHANGING TO SNOW SHOWERS OVER THE MOUNTAINS
ON SATURDAY WITH LITTLE IF ANY SNOW ACCUMULATION. IN THE LOWER
ELEVATIONS IT WILL JUST GET COLDER WITH A DRY ARCTIC AIR MASS MOVING
INTO THE CWA. THE COLD AIR WILL CONTINUE INTO THE EXTENDED PERIOD
WITH DRY CONDITIONS. WINDS WILL BE LOCALLY BREEZY THROUGH THE SHORT
TERM PERIOD...ESPECIALLY OVER THE RIDGE TOPS AND OVER OPEN TERRAIN.
88

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE 00Z GFS AND
ECMWF MODEL RUNS ARE CONSISTENT WITH YESTERDAY`S 00Z RUNS IN SHOWING
A PROGRESSIVE MID/UPPER LEVEL TROUGH MOVING ACROSS PACIFIC NORTHWEST
SATURDAY NIGHT WITH MAIN CHANCE FOR PRECIPITATION IN THE EVENING
WITH POPS DECREASING TO LESS THAN 15 PERCENT BY MIDNIGHT. SNOW
LEVELS WILL CONTINUE NEAR TERRAIN FLOOR ACROSS THE ENTIRE FORECAST
AREA ON SUNDAY. THE TROUGH DROPPING OUT OF BRITISH COLUMBIA BRINGS
AN ARCTIC AIRMASS INTO THE REGION FOR SUNDAY AND MONDAY. HIGH TEMPS
ON SUNDAY/MONDAY WILL BE IN THE UPPER 20S TO LOWER 30S. THE NEXT
PACIFIC TROUGH TAKES SHAPE NEAR 130-140W ON SUNDAY AND THIS SYSTEM
LOOKS TO MOVE INTO CALIFORNIA ON MONDAY AND TUESDAY.  POLAN

&&

.PREVIOUS AVIATION DISCUSSION...06Z TAFS...FOG AND LOW CLOUDS WITH
LIFR TO IFR CIG AND VIS IS OCCURRING OR WILL OCCUR AT KPSC AND KYKM
THRU 27/12Z.  ALL OTHER TAF SITES ARE FORECASTED TO REMAIN AT VFR
DURING THE SAME PERIOD.  STARTING AFT 27/12Z...INCREASING SOUTHERLY
WINDS WITH A PASSING DISTURBANCE SHOULD SCOUR OUT FOG AT THE
AFFECTED TAF SITES.  THE DISTURBANCE MAY ALSO BRING RAIN SHOWERS
WITH CIG AOA 5K FT AGL TO NORTHERN OREGON TAF SITES AND KALW AFT
27/20Z.  BIEDA

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  45  59  34 /  10  20  60  80
ALW  60  48  58  36 /  20  20  70  80
PSC  59  45  60  35 /  10  20  30  50
YKM  54  36  53  27 /  10  20  30  30
HRI  60  45  60  35 /  10  20  40  60
ELN  53  37  52  27 /  20  30  40  30
RDM  58  37  58  33 /  10  20  50  70
LGD  52  40  51  36 /  30  30  70  80
GCD  54  40  51  35 /  20  40  60  70
DLS  59  44  56  37 /  20  30  70  80

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING WAZ026-028.

&&

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

$$

88/99/99








000
FXUS66 KPDT 270531 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
933 PM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE ISSUED
A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A RESULT AND WILL
MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE FOG. OTHERWISE...A
RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO WEAKEN WITH CLOUDS
MOVING INTO THE AREA IN ASSOCIATION WITH SHORTWAVE IMPULSES. A
SIGNIFICANT CHANGE IN THE WEATHER PATTERN OVER THE THANKSGIVING
WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH ASSOCIATED COLD FRONT
DIVES SOUTH INTO THE REGION FRIDAY AND SATURDAY. THIS MAY BRING
SNOWFALL ACCUMULATIONS IN THE MIDDLE OF THE HOLIDAY WEEKEND AND
IMPACT TRAVEL. PLEASE FIND MORE INFORMATION IN PRODUCT SPSPDT AND
THE PREVIOUS DISCUSSION BELOW. BIEDA

.AVIATION...06Z TAFS...FOG AND LOW CLOUDS WITH LIFR TO IFR CIG AND
VIS IS OCCURRING OR WILL OCCUR AT KPSC AND KYKM THRU 27/12Z.  ALL
OTHER TAF SITES ARE FORECASTED TO REMAIN AT VFR DURING THE SAME
PERIOD.  STARTING AFT 27/12Z...INCREASING SOUTHERLY WINDS WITH A
PASSING DISTURBANCE SHOULD SCOUR OUT FOG AT THE AFFECTED TAF SITES.
THE DISTURBANCE MAY ALSO BRING RAIN SHOWERS WITH CIG AOA 5K FT AGL
TO NORTHERN OREGON TAF SITES AND KALW AFT 27/20Z.  BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82










000
FXUS66 KPDT 270531 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
933 PM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE ISSUED
A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A RESULT AND WILL
MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE FOG. OTHERWISE...A
RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO WEAKEN WITH CLOUDS
MOVING INTO THE AREA IN ASSOCIATION WITH SHORTWAVE IMPULSES. A
SIGNIFICANT CHANGE IN THE WEATHER PATTERN OVER THE THANKSGIVING
WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH ASSOCIATED COLD FRONT
DIVES SOUTH INTO THE REGION FRIDAY AND SATURDAY. THIS MAY BRING
SNOWFALL ACCUMULATIONS IN THE MIDDLE OF THE HOLIDAY WEEKEND AND
IMPACT TRAVEL. PLEASE FIND MORE INFORMATION IN PRODUCT SPSPDT AND
THE PREVIOUS DISCUSSION BELOW. BIEDA

.AVIATION...06Z TAFS...FOG AND LOW CLOUDS WITH LIFR TO IFR CIG AND
VIS IS OCCURRING OR WILL OCCUR AT KPSC AND KYKM THRU 27/12Z.  ALL
OTHER TAF SITES ARE FORECASTED TO REMAIN AT VFR DURING THE SAME
PERIOD.  STARTING AFT 27/12Z...INCREASING SOUTHERLY WINDS WITH A
PASSING DISTURBANCE SHOULD SCOUR OUT FOG AT THE AFFECTED TAF SITES.
THE DISTURBANCE MAY ALSO BRING RAIN SHOWERS WITH CIG AOA 5K FT AGL
TO NORTHERN OREGON TAF SITES AND KALW AFT 27/20Z.  BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82









000
FXUS66 KPDT 270346
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
746 PM PST WED NOV 26 2014

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE
ISSUED A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A
RESULT...AND WILL MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE
FOG. OTHERWISE...A RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO
WEAKEN WITH CLOUDS MOVING INTO THE AREA IN ASSOCIATION WITH
SHORTWAVE IMPULSES. A SIGNIFICANT CHANGE IN THE WEATHER PATTERN
OVER THE THANKSGIVING WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH
ASSOCIATED COLD FRONT DIVES SOUTH INTO THE REGION FRIDAY AND
SATURDAY. THIS MAY BRING SNOWFALL ACCUMULATIONS IN THE MIDDLE OF
THE HOLIDAY WEEKEND AND IMPACT TRAVEL. PLEASE FIND MORE
INFORMATION IN PRODUCT SPSPDT AND THE PREVIOUS DISCUSSION BELOW.
BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82







000
FXUS66 KPDT 270346
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
746 PM PST WED NOV 26 2014

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE
ISSUED A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A
RESULT...AND WILL MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE
FOG. OTHERWISE...A RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO
WEAKEN WITH CLOUDS MOVING INTO THE AREA IN ASSOCIATION WITH
SHORTWAVE IMPULSES. A SIGNIFICANT CHANGE IN THE WEATHER PATTERN
OVER THE THANKSGIVING WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH
ASSOCIATED COLD FRONT DIVES SOUTH INTO THE REGION FRIDAY AND
SATURDAY. THIS MAY BRING SNOWFALL ACCUMULATIONS IN THE MIDDLE OF
THE HOLIDAY WEEKEND AND IMPACT TRAVEL. PLEASE FIND MORE
INFORMATION IN PRODUCT SPSPDT AND THE PREVIOUS DISCUSSION BELOW.
BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82







000
FXUS66 KPDT 270346
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
746 PM PST WED NOV 26 2014

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE
ISSUED A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A
RESULT...AND WILL MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE
FOG. OTHERWISE...A RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO
WEAKEN WITH CLOUDS MOVING INTO THE AREA IN ASSOCIATION WITH
SHORTWAVE IMPULSES. A SIGNIFICANT CHANGE IN THE WEATHER PATTERN
OVER THE THANKSGIVING WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH
ASSOCIATED COLD FRONT DIVES SOUTH INTO THE REGION FRIDAY AND
SATURDAY. THIS MAY BRING SNOWFALL ACCUMULATIONS IN THE MIDDLE OF
THE HOLIDAY WEEKEND AND IMPACT TRAVEL. PLEASE FIND MORE
INFORMATION IN PRODUCT SPSPDT AND THE PREVIOUS DISCUSSION BELOW.
BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82






000
FXUS66 KPDT 270346
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
746 PM PST WED NOV 26 2014

.UPDATE...DENSE FOG HAS DEVELOPED IN THE KITTITAS VALLEY WITH
PATCHY TO LOCALLY DENSE FOG IN THE LOWER COLUMBIA BASIN. HAVE
ISSUED A DENSE FOG ADVISORY FOR THE KITTITAS VALLEY AS A
RESULT...AND WILL MONITOR THE TRI-CITIES AREA CLOSELY FOR DENSE
FOG. OTHERWISE...A RIDGE OVER THE AREA THIS EVENING HAS BEGUN TO
WEAKEN WITH CLOUDS MOVING INTO THE AREA IN ASSOCIATION WITH
SHORTWAVE IMPULSES. A SIGNIFICANT CHANGE IN THE WEATHER PATTERN
OVER THE THANKSGIVING WEEKEND IS EXPECTED AS AN ARCTIC LOW WITH
ASSOCIATED COLD FRONT DIVES SOUTH INTO THE REGION FRIDAY AND
SATURDAY. THIS MAY BRING SNOWFALL ACCUMULATIONS IN THE MIDDLE OF
THE HOLIDAY WEEKEND AND IMPACT TRAVEL. PLEASE FIND MORE
INFORMATION IN PRODUCT SPSPDT AND THE PREVIOUS DISCUSSION BELOW.
BIEDA

&&

.PREV DISC... /ISSUED 330 PM PST WED NOV 26 2014/

SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPITATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPITATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  60  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  42  59  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  38  53  39  50 /  20  20  30  40
RDM  38  58  39  56 /  10  10  20  50
LGD  44  52  42  49 /  20  30  30  70
GCD  44  54  42  49 /  10  20  40  60
DLS  47  59  46  54 /  10  20  30  70

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...DENSE FOG ADVISORY UNTIL 10 AM PST THURSDAY WAZ026.

&&

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

$$

98/82/82






000
FXUS66 KPDT 262331 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
330 PM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPTATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPTATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

&&

.AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  50  59  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  47  60  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  41  54  39  50 /  20  20  30  40
RDM  37  59  39  56 /  10  10  20  50
LGD  45  52  42  49 /  20  20  30  70
GCD  44  54  43  49 /  10  20  30  60
DLS  47  59  46  54 /  10  20  30  70

&&

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

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

$$

91/82/82








000
FXUS66 KPDT 262331 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
330 PM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPTATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPTATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB

&&

.AVIATION...00Z TAFS...FOG AND LOW CLOUDS HAVE LIFTED AT KYKM...BUT
IFR CONDITIONS CONTINUE AT KPSC. CONDITIONS MAY DETERIORATE AGAIN AT
KYKM OVERNIGHT. THURSDAY...A WEAK DISTURBANCE COULD PROVIDE ENOUGH
MIXING TO SCOUR OUT THE FOG. AT THE REMAINING TAF SITES...VFR
CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS. WINDS WILL BE
MOSTLY 5-15 KTS.  82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  50  59  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  47  60  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  41  54  39  50 /  20  20  30  40
RDM  37  59  39  56 /  10  10  20  50
LGD  45  52  42  49 /  20  20  30  70
GCD  44  54  43  49 /  10  20  30  60
DLS  47  59  46  54 /  10  20  30  70

&&

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

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

$$

91/82/82







000
FXUS66 KPDT 262220
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PST WED NOV 26 2014

.SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPTATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPTATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...FOG AND LOW CLOUDS WILL
CAUSE LIFR CONDITIONS AT KYKM AND KPSC. SOME IMPROVEMENT MAY BE
POSSIBLE THIS AFTERNOON...BUT WOULD NOT BE SURPRISED IF THESE TAF
SITES REMAINED ENGULFED IN FOG THROUGH THURSDAY MORNING. AFTER
12Z...A WEAK DISTURBANCE COULD PROVIDE ENOUGH MIXING TO SCOUR OUT
THE FOG AT KPSC...BUT CONDITIONS AT KYKM COULD REMAIN POOR. AT THE
REMAINING TAF SITES...VFR CONDITIONS ARE EXPECTED THROUGH THE NEXT
24 HOURS. WINDS WILL BE MOSTLY 5-15 KTS.  82


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  50  59  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  47  60  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  41  54  39  50 /  20  20  30  40
RDM  37  59  39  56 /  10  10  20  50
LGD  45  52  42  49 /  20  20  30  70
GCD  44  54  43  49 /  10  20  30  60
DLS  47  59  46  54 /  10  20  30  70

&&

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

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

$$

91/82/82









000
FXUS66 KPDT 262220
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PST WED NOV 26 2014

.SHORT TERM...TONIGHT THROUGH SATURDAY...HIGH PRESSURE OVER THE
REGION WILL BE COMING TO AN END AS IT BEGINS TO FLATTEN OVERNIGHT.
THIS WILL INCREASE A WESTERLY FLOW OVER THE REGION FOR THE NEXT
COUPLE OF DAYS WHICH WILL INCREASE THE CHANCE OF PRECIPTATION
LEADING UP TO A COLD FRONTAL PASSAGE LATE FRIDAY AND EARLY SATURDAY.
BEST CHANCE OF PRECIPTATION WILL COME AHEAD OF THIS FRONTAL PASSAGE
MAINLY IN THE FORM OF RAIN AS SNOW LEVELS REMAIN HIGH. THIS WILL
ALSO RESULT IN THE CONTINUATION OF MILD TEMPERATURES BOTH DAY AND
NIGHT. SOUTHERLY WINDS WILL ALSO INCREASE AHEAD OF THE FRONTAL.
COLDER AIR WILL POUR INTO THE REGION FROM THE NORTH ON SATURDAY
BEHIND THE COLD FRONT. PRECIPITATION WILL BE TURNING OVER TO SNOW AS
SNOW LEVELS LOWER RAPIDLY FRIDAY NIGHT THROUGH SATURDAY. EXPECT SOME
LIGHT SNOW ACCUMULATION SATURDAY MAINLY FROM THE BLUE MOUNTAIN
FOOTHILLS AND AREAS SOUTHWARD ACROSS OREGON. HIGH TEMPERATURES
SATURDAY WILL BE 15 TO 25 DEGREES COLDER THAN FRIDAY.

.LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...THE COLD FRONT WILL
BE EXITING THE AREA SATURDAY NIGHT...BUT SNOW SHOWERS WILL STILL BE
POSSIBLE OVER CENTRAL OREGON AND THE EASTERN MOUNTAINS DURING THE
EVENING. MUCH COLDER AND DRIER CONDITIONS CAN THEN BE EXPECTED ON
SUNDAY WITH TEMPERATURES REMAINING BELOW FREEZING ACROSS MOST OF THE
AREA. A WARM FRONT WILL SPREAD MOISTURE NORTHWARD ON MONDAY.
HOWEVER...TEMPERATURES WILL GENERALLY STAY BELOW NORMAL WITH SNOW
POSSIBLE IN NORTHERN OREGON AND SOUTHERN WASHINGTON. YET IN CENTRAL
OREGON...SNOW LEVELS WILL RISE TO AROUND 5500 FEET...SO RAIN WILL
MIX IN DURING THE DAY. THE PRECIPITATION BAND WILL RETREAT SOUTHWARD
ON MONDAY NIGHT AND COLDER AIR COULD ALLOW ANY RAIN TO CHANGE BACK
TO SNOW. HIGH PRESSURE WILL THEN BUILD OVER THE REGION ON TUESDAY.
AT THIS POINT IN TIME THE MODELS DISAGREE ON THE POSITION OF A LOW
NEAR THE CALIFORNIA COAST. IF THE GFS IS CORRECT...MOISTURE COULD
CONTINUE TO STREAM NORTHWARD FUELING RAIN AND SNOW SHOWERS OVER
OREGON AND EXTREME SOUTHEAST WASHINGTON. IF THE ECMWF SOLUTION IS
CORRECT...MUCH DRIER WEATHER IS IN STORE. DESPITE THE MODEL
DIFFERENCES...BOTH DO BRING THE LOW INLAND ON WEDNESDAY FOR A BETTER
CHANCE OF RAIN AND SNOW...ESPECIALLY OVER OREGON. TEMPERATURES WILL
BE BELOW NORMAL THROUGH THE PERIOD WITH HIGHS IN THE UPPER 20S TO
30S AND LOWS IN THE TEENS AND 20S.  COBB


&&

.AVIATION...PREVIOUS DISCUSSION...18Z TAFS...FOG AND LOW CLOUDS WILL
CAUSE LIFR CONDITIONS AT KYKM AND KPSC. SOME IMPROVEMENT MAY BE
POSSIBLE THIS AFTERNOON...BUT WOULD NOT BE SURPRISED IF THESE TAF
SITES REMAINED ENGULFED IN FOG THROUGH THURSDAY MORNING. AFTER
12Z...A WEAK DISTURBANCE COULD PROVIDE ENOUGH MIXING TO SCOUR OUT
THE FOG AT KPSC...BUT CONDITIONS AT KYKM COULD REMAIN POOR. AT THE
REMAINING TAF SITES...VFR CONDITIONS ARE EXPECTED THROUGH THE NEXT
24 HOURS. WINDS WILL BE MOSTLY 5-15 KTS.  82


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  50  59  47  57 /  10  10  20  60
ALW  51  60  50  56 /  10  20  20  70
PSC  47  60  47  58 /  10  10  10  30
YKM  41  54  38  51 /  10  10  10  30
HRI  47  60  47  58 /  10  10  10  40
ELN  41  54  39  50 /  20  20  30  40
RDM  37  59  39  56 /  10  10  20  50
LGD  45  52  42  49 /  20  20  30  70
GCD  44  54  43  49 /  10  20  30  60
DLS  47  59  46  54 /  10  20  30  70

&&

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

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

$$

91/82/82










000
FXUS66 KPDT 261729 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
930 AM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...RIDGE OF HIGH PRESSURE WILL BE
OVER THE REGION WITH THE MAIN MOISTURE STREAM STAYING NORTH OF THE
FORECAST AREA TODAY AND THEN BEGINNING TO DROP SOUTHWARD LATE
TONIGHT. COULD SEE A FEW SHOWERS NEAR THE CREST OF THE CENTRAL
WASHINGTON CASCADES TODAY BUT THEN SPREADING SOUTHWARD DOWN THE
CASCADES INTO OREGON AND INTO THE MOUNTAINS OF EASTERN OREGON LATE
TONIGHT. TEMPERATURES WILL CONTINUE TO BE MILD AND ABOVE NORMAL
TODAY AND TONIGHT.

&&

.AVIATION...18Z TAFS...FOG AND LOW CLOUDS WILL CAUSE LIFR CONDITIONS
AT KYKM AND KPSC. SOME IMPROVEMENT MAY BE POSSIBLE THIS
AFTERNOON...BUT WOULD NOT BE SURPRISED IF THESE TAF SITES REMAINED
ENGULFED IN FOG THROUGH THURSDAY MORNING. AFTER 12Z...A WEAK
DISTURBANCE COULD PROVIDE ENOUGH MIXING TO SCOUR OUT THE FOG AT
KPSC...BUT CONDITIONS AT KYKM COULD REMAIN POOR. AT THE REMAINING
TAF SITES...VFR CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS.
WINDS WILL BE MOSTLY 5-15 KTS.  82

&&

.PREV DISC... /ISSUED 440 AM PST WED NOV 26 2014/

SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  50  60  44 /   0  10  10  20
ALW  61  51  60  47 /   0  10  10  20
PSC  59  47  59  44 /   0  10  10  20
YKM  53  41  53  37 /  10  10  10  20
HRI  62  47  60  44 /   0  10  10  20
ELN  52  41  52  36 /  10  20  20  50
RDM  58  37  58  37 /   0  10  10  20
LGD  53  45  52  40 /   0  20  20  40
GCD  54  44  55  41 /   0  10  10  40
DLS  62  47  60  42 /  10  10  20  40

&&

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

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

$$

91/82/82








000
FXUS66 KPDT 261729 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
930 AM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY AND TONIGHT...RIDGE OF HIGH PRESSURE WILL BE
OVER THE REGION WITH THE MAIN MOISTURE STREAM STAYING NORTH OF THE
FORECAST AREA TODAY AND THEN BEGINNING TO DROP SOUTHWARD LATE
TONIGHT. COULD SEE A FEW SHOWERS NEAR THE CREST OF THE CENTRAL
WASHINGTON CASCADES TODAY BUT THEN SPREADING SOUTHWARD DOWN THE
CASCADES INTO OREGON AND INTO THE MOUNTAINS OF EASTERN OREGON LATE
TONIGHT. TEMPERATURES WILL CONTINUE TO BE MILD AND ABOVE NORMAL
TODAY AND TONIGHT.

&&

.AVIATION...18Z TAFS...FOG AND LOW CLOUDS WILL CAUSE LIFR CONDITIONS
AT KYKM AND KPSC. SOME IMPROVEMENT MAY BE POSSIBLE THIS
AFTERNOON...BUT WOULD NOT BE SURPRISED IF THESE TAF SITES REMAINED
ENGULFED IN FOG THROUGH THURSDAY MORNING. AFTER 12Z...A WEAK
DISTURBANCE COULD PROVIDE ENOUGH MIXING TO SCOUR OUT THE FOG AT
KPSC...BUT CONDITIONS AT KYKM COULD REMAIN POOR. AT THE REMAINING
TAF SITES...VFR CONDITIONS ARE EXPECTED THROUGH THE NEXT 24 HOURS.
WINDS WILL BE MOSTLY 5-15 KTS.  82

&&

.PREV DISC... /ISSUED 440 AM PST WED NOV 26 2014/

SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  50  60  44 /   0  10  10  20
ALW  61  51  60  47 /   0  10  10  20
PSC  59  47  59  44 /   0  10  10  20
YKM  53  41  53  37 /  10  10  10  20
HRI  62  47  60  44 /   0  10  10  20
ELN  52  41  52  36 /  10  20  20  50
RDM  58  37  58  37 /   0  10  10  20
LGD  53  45  52  40 /   0  20  20  40
GCD  54  44  55  41 /   0  10  10  40
DLS  62  47  60  42 /  10  10  20  40

&&

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

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

$$

91/82/82







000
FXUS66 KPDT 261611
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
810 AM PST WED NOV 26 2014

.SHORT TERM...TODAY AND TONIGHT...RIDGE OF HIGH PRESSURE WILL BE
OVER THE REGION WITH THE MAIN MOISTURE STREAM STAYING NORTH OF THE
FORECAST AREA TODAY AND THEN BEGINNING TO DROP SOUTHWARD LATE
TONIGHT. COULD SEE A FEW SHOWERS NEAR THE CREST OF THE CENTRAL
WASHINGTON CASCADES TODAY BUT THEN SPREADING SOUTHWARD DOWN THE
CASCADES INTO OREGON AND INTO THE MOUNTAINS OF EASTERN OREGON LATE
TONIGHT. TEMPERATURES WILL CONTINUE TO BE MILD AND ABOVE NORMAL
TODAY AND TONIGHT.

&&

.PREV DISC... /ISSUED 440 AM PST WED NOV 26 2014/

SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

AVIATION...12Z TAFS...SPOTTY AREAS OF FOG AND LOW CLOUDS HAVE
DEVELOPED OVER THE LOWER COLUMBIA BASIN WITH CEILINGS 003-008.
OTHERWISE, CLOUD BASES ARE AROUND 20000 FT AGL, EXCEPT AT KDLS WHERE
CEILINGS ARE 060-080. DOWNSLOPE WINDS AT KALW HAVE MIXED OUT THE FOG
AND DEWPOINT DEPRESSION AT KALW IS SUCH THAT FOG IS NOT EXPECTED TO
FORM AGAIN THIS MORNING. CONDITIONS WILL IMPROVE THROUGH TODAY
ALTHOUGH SKIES SHOULD REMAIN BKN-OVC WITH CLOUDS BASES ABOVE 15000
FT AGL. WINDS WILL BE MOSTLY 5-10 KTS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  50  60  44 /   0  10  10  20
ALW  61  51  60  47 /   0  10  10  20
PSC  59  47  59  44 /   0  10  10  20
YKM  53  41  53  37 /  10  10  10  20
HRI  62  47  60  44 /   0  10  10  20
ELN  52  41  52  36 /  10  20  20  50
RDM  58  37  58  37 /   0  10  10  20
LGD  53  45  52  40 /   0  20  20  40
GCD  54  44  55  41 /   0  10  10  40
DLS  62  47  60  42 /  10  10  20  40

&&

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

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

$$

91/82/82









000
FXUS66 KPDT 261611
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
810 AM PST WED NOV 26 2014

.SHORT TERM...TODAY AND TONIGHT...RIDGE OF HIGH PRESSURE WILL BE
OVER THE REGION WITH THE MAIN MOISTURE STREAM STAYING NORTH OF THE
FORECAST AREA TODAY AND THEN BEGINNING TO DROP SOUTHWARD LATE
TONIGHT. COULD SEE A FEW SHOWERS NEAR THE CREST OF THE CENTRAL
WASHINGTON CASCADES TODAY BUT THEN SPREADING SOUTHWARD DOWN THE
CASCADES INTO OREGON AND INTO THE MOUNTAINS OF EASTERN OREGON LATE
TONIGHT. TEMPERATURES WILL CONTINUE TO BE MILD AND ABOVE NORMAL
TODAY AND TONIGHT.

&&

.PREV DISC... /ISSUED 440 AM PST WED NOV 26 2014/

SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

AVIATION...12Z TAFS...SPOTTY AREAS OF FOG AND LOW CLOUDS HAVE
DEVELOPED OVER THE LOWER COLUMBIA BASIN WITH CEILINGS 003-008.
OTHERWISE, CLOUD BASES ARE AROUND 20000 FT AGL, EXCEPT AT KDLS WHERE
CEILINGS ARE 060-080. DOWNSLOPE WINDS AT KALW HAVE MIXED OUT THE FOG
AND DEWPOINT DEPRESSION AT KALW IS SUCH THAT FOG IS NOT EXPECTED TO
FORM AGAIN THIS MORNING. CONDITIONS WILL IMPROVE THROUGH TODAY
ALTHOUGH SKIES SHOULD REMAIN BKN-OVC WITH CLOUDS BASES ABOVE 15000
FT AGL. WINDS WILL BE MOSTLY 5-10 KTS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  60  50  60  44 /   0  10  10  20
ALW  61  51  60  47 /   0  10  10  20
PSC  59  47  59  44 /   0  10  10  20
YKM  53  41  53  37 /  10  10  10  20
HRI  62  47  60  44 /   0  10  10  20
ELN  52  41  52  36 /  10  20  20  50
RDM  58  37  58  37 /   0  10  10  20
LGD  53  45  52  40 /   0  20  20  40
GCD  54  44  55  41 /   0  10  10  40
DLS  62  47  60  42 /  10  10  20  40

&&

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

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

$$

91/82/82










000
FXUS66 KPDT 261246 CCA
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
440 AM PST WED NOV 26 2014

CORRECTED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.AVIATION...12Z TAFS...SPOTTY AREAS OF FOG AND LOW CLOUDS HAVE
DEVELOPED OVER THE LOWER COLUMBIA BASIN WITH CEILINGS 003-008.
OTHERWISE, CLOUD BASES ARE AROUND 20000 FT AGL, EXCEPT AT KDLS WHERE
CEILINGS ARE 060-080. DOWNSLOPE WINDS AT KALW HAVE MIXED OUT THE FOG
AND DEWPOINT DEPRESSION AT KALW IS SUCH THAT FOG IS NOT EXPECTED TO
FORM AGAIN THIS MORNING. CONDITIONS WILL IMPROVE THROUGH TODAY
ALTHOUGH SKIES SHOULD REMAIN BKN-OVC WITH CLOUDS BASES ABOVE 15000
FT AGL. WINDS WILL BE MOSTLY 5-10 KTS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  46  60  44 /   0  10  10  20
ALW  60  50  60  47 /   0  10  10  20
PSC  58  46  59  44 /   0  10  10  20
YKM  54  39  53  37 /  10  20  10  20
HRI  60  46  60  44 /   0  10  10  20
ELN  52  39  52  36 /  10  20  20  50
RDM  58  36  58  37 /   0  10  10  20
LGD  52  40  52  40 /   0  20  20  40
GCD  53  40  55  41 /   0  10  10  40
DLS  59  46  60  42 /  10  10  20  40

&&

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

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

$$

88/99/99












000
FXUS66 KPDT 261246 CCA
AFDPDT

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
440 AM PST WED NOV 26 2014

CORRECTED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.AVIATION...12Z TAFS...SPOTTY AREAS OF FOG AND LOW CLOUDS HAVE
DEVELOPED OVER THE LOWER COLUMBIA BASIN WITH CEILINGS 003-008.
OTHERWISE, CLOUD BASES ARE AROUND 20000 FT AGL, EXCEPT AT KDLS WHERE
CEILINGS ARE 060-080. DOWNSLOPE WINDS AT KALW HAVE MIXED OUT THE FOG
AND DEWPOINT DEPRESSION AT KALW IS SUCH THAT FOG IS NOT EXPECTED TO
FORM AGAIN THIS MORNING. CONDITIONS WILL IMPROVE THROUGH TODAY
ALTHOUGH SKIES SHOULD REMAIN BKN-OVC WITH CLOUDS BASES ABOVE 15000
FT AGL. WINDS WILL BE MOSTLY 5-10 KTS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  46  60  44 /   0  10  10  20
ALW  60  50  60  47 /   0  10  10  20
PSC  58  46  59  44 /   0  10  10  20
YKM  54  39  53  37 /  10  20  10  20
HRI  60  46  60  44 /   0  10  10  20
ELN  52  39  52  36 /  10  20  20  50
RDM  58  36  58  37 /   0  10  10  20
LGD  52  40  52  40 /   0  20  20  40
GCD  53  40  55  41 /   0  10  10  40
DLS  59  46  60  42 /  10  10  20  40

&&

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

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

$$

88/99/99











000
FXUS66 KPDT 261245 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
440 AM PST WED NOV 26 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
SOUTHEAST ACROSS THE PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA AND USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGHOUT SUNDAY. HOWEVER, I
KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY OF
A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.AVIATION...12Z TAFS...SPOTTY AREAS OF FOG AND LOW CLOUDS HAVE
DEVELOPED OVER THE LOWER COLUMBIA BASIN WITH CEILINGS 003-008.
OTHERWISE, CLOUD BASES ARE AROUND 20000 FT AGL, EXCEPT AT KDLS WHERE
CEILINGS ARE 060-080. DOWNSLOPE WINDS AT KALW HAVE MIXED OUT THE FOG
AND DEWPOINT DEPRESSION AT KALW IS SUCH THAT FOG IS NOT EXPECTED TO
FORM AGAIN THIA MORNING. CONDITIONS WILL IMPROVE THROUGH TODAY
ALTHOUGH SKIES SHOULD REMAIN BKN-OVC WITH CLOUDS BASES ABOVE 15000
FT AGL. WINDS WILL BE MOSTLY 5-10 KTS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  46  60  44 /   0  10  10  20
ALW  60  50  60  47 /   0  10  10  20
PSC  58  46  59  44 /   0  10  10  20
YKM  54  39  53  37 /  10  20  10  20
HRI  60  46  60  44 /   0  10  10  20
ELN  52  39  52  36 /  10  20  20  50
RDM  58  36  58  37 /   0  10  10  20
LGD  52  40  52  40 /   0  20  20  40
GCD  53  40  55  41 /   0  10  10  40
DLS  59  46  60  42 /  10  10  20  40

&&

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

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

$$

88/99/99









000
FXUS66 KPDT 261101
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PST WED NOV 26 2014

.SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH  IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
EAST AND SOUTH TROUGH PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGH OUT SUNDAY. HOWEVER,
I KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY
OF A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.PREVIOUS AVIATION DISCUSSION...06Z TAFS. AREAS OF LOW CLOUDS
DEVELOPING OVER THE COLUMBIA BASIN WITH CEILINGS 010-030...OTHERWISE
CEILINGS ARE 030-060. FOG HAS DEVELOPED AT ALW DUE TO EARLIER RAIN
TODAY AND WILL LIKELY CONTINUE THROUGH THE NIGHT. CONDITIONS WILL
IMPROVE WEDNESDAY WITH CLEARING SKIES. WINDS MOSTLY 5-15 KTS.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  46  60  44 /   0  10  10  20
ALW  60  50  60  47 /   0  10  10  20
PSC  58  46  59  44 /   0  10  10  20
YKM  54  39  53  37 /  10  20  10  20
HRI  60  46  60  44 /   0  10  10  20
ELN  52  39  52  36 /  10  20  20  50
RDM  58  36  58  37 /   0  10  10  20
LGD  52  40  52  40 /   0  20  20  40
GCD  53  40  55  41 /   0  10  10  40
DLS  59  46  60  42 /  10  10  20  40

&&

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

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

$$

88/99/99










000
FXUS66 KPDT 261101
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PST WED NOV 26 2014

.SHORT TERM...TODAY THROUGH FRIDAY...THE RAIN HAS MOVED OFF TO THE
NORTHEAST WITH JUST A FEW SHOWERS OVER THE CENTRAL WASHINGTON
CASCADES AT THIS TIME. EXPECT THESE TO CONTINUE TODAY. ELSEWHERE IT
WILL BE A DRY DAY AS AN UPPER RIDGE AMPLIFIES OVER THE REGION.
TEMPERATURES WILL BE QUITE MILD FOR THIS TIME OF YEAR WITH THE LOWER
ELEVATIONS AROUND OR JUST OVER 60 DEGREES EXPECTED BOTH TODAY AND
THURSDAY. A WEAK COLD FRONT WILL CAUSE AN INCREASE IN CLOUDS AND
MORE RAIN TO THE MOUNTAINS LATE TONIGHT INTO THURSDAY. HOWEVER...
DOWNSLOPE DRYING EFFECTS WILL KEEP THE BASIN AND ADJACENT VALLEYS
DRY ON THURSDAY. A STRONGER COLD FRONT WILL DROP DOWN OUT OF CANADA
THURSDAY NIGHT INTO FRIDAY WHICH WILL INCREASE THE CHANCES OF
PRECIPITATION ACROSS THE CWA. BY FRIDAY MORNING ALL AREAS SHOULD SEE
SOME RAINFALL. TEMPERATURES AHEAD OF THIS COLD FRONT WILL CONTINUE
TO BE QUITE MILD ON FRIDAY...THOUGH A FEW DEGREES COOLER THAN
THURSDAY. MUCH COLDER AIR IS STILL EXPECTED GOING INTO THE EXTENDED
FORECAST. IT WILL BE LOCALLY BREEZY TO WINDY THROUGH THE SHORT TERM
ESPECIALLY ON THE RIDGE TOPS AND EXPOSED OPEN TERRAIN EACH DAY IN
THE SHORT TERM. 88

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY...LATEST MODEL RUNS
INDICATE THAT THE MID/UPPER LEVEL TROUGH  IN SOUTHERN BRITISH
COLUMBIA BECOMES THE DOMINANT SYSTEM RELATIVE TO THE MID/UPPER LEVEL
TROUGH OFFSHORE, WHICH WEAKENS CONSIDERABLY ON FRIDAY AS IT GETS
CAPTURED BY COMING INTO PHASE WITH THE AFOREMENTIONED BRITISH
COLUMBIA TROUGH. AS SUCH THE TROUGH BECOMES PROGRESSIVE AND MOVES
EAST AND SOUTH TROUGH PACIFIC NORTHWEST FRIDAY NIGHT AND SATURDAY.
THIS RESULTS IN THE FRONTAL BOUNDARY MOVING SOUTH INTO CENTRAL
OREGON DURING THE DAY ON SATURDAY FOR DRY CONDITIONS SETTING IN
ACROSS SOUTHEAST WASHINGTON ON SATURDAY. SNOW LEVELS START OUT AT
4000-6000 FEET FRIDAY EVENING AND DROP LIKE A ROCK TO THE FLOOR OF
THE LOWER COLUMBIA BASIN BY DAYBREAK ON SATURDAY BY VIRTUE OF THE
TROUGH DROPPING OUT OF BRITISH COLUMBIA USHERING IN AN ARCTIC
AIRMASS. HIGH TEMPS ON SATURDAY WILL BE IN THE 30S. BY DAYBREAK ON
SUNDAY THE TROUGH MOVES EAST INTO IDAHO/MONTANA FOR A BREAK IN
PRECIPITATION FOR ALL OF FORECAST AREA THROUGH OUT SUNDAY. HOWEVER,
I KEPT A CHANCE OF SNOW IN CENTRAL OREGON TO ALLOW FOR POSSIBILITY
OF A WARM FRONT MOVING INTO SOUTHWEST OREGON AND MAYBE INTO CENTRAL
OREGON BY SUNDAY AFTERNOON. THE NEXT PACIFIC TROUGH TAKES SHAPE NEAR
130-140W ON SUNDAY AND THIS SYSTEM LOOKS TO MOVE INTO CALIFORNIA ON
MONDAY AND TUESDAY.  POLAN

&&

.PREVIOUS AVIATION DISCUSSION...06Z TAFS. AREAS OF LOW CLOUDS
DEVELOPING OVER THE COLUMBIA BASIN WITH CEILINGS 010-030...OTHERWISE
CEILINGS ARE 030-060. FOG HAS DEVELOPED AT ALW DUE TO EARLIER RAIN
TODAY AND WILL LIKELY CONTINUE THROUGH THE NIGHT. CONDITIONS WILL
IMPROVE WEDNESDAY WITH CLEARING SKIES. WINDS MOSTLY 5-15 KTS.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  46  60  44 /   0  10  10  20
ALW  60  50  60  47 /   0  10  10  20
PSC  58  46  59  44 /   0  10  10  20
YKM  54  39  53  37 /  10  20  10  20
HRI  60  46  60  44 /   0  10  10  20
ELN  52  39  52  36 /  10  20  20  50
RDM  58  36  58  37 /   0  10  10  20
LGD  52  40  52  40 /   0  20  20  40
GCD  53  40  55  41 /   0  10  10  40
DLS  59  46  60  42 /  10  10  20  40

&&

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

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

$$

88/99/99









000
FXUS66 KPDT 260624
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1022 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

.AVIATION...06Z TAFS. AREAS OF LOW CLOUDS DEVELOPING OVER THE
COLUMBIA BASIN WITH CEILINGS 010-030...OTHERWISE CEILINGS ARE
030-060. FOG HAS DEVELOPED AT ALW DUE TO EARLIER RAIN TODAY AND WILL
LIKELY CONTINUE THROUGH THE NIGHT. CONDITIONS WILL IMPROVE WEDNESDAY
WITH CLEARING SKIES. WINDS MOSTLY 5-15KT.

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 260624
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1022 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

.AVIATION...06Z TAFS. AREAS OF LOW CLOUDS DEVELOPING OVER THE
COLUMBIA BASIN WITH CEILINGS 010-030...OTHERWISE CEILINGS ARE
030-060. FOG HAS DEVELOPED AT ALW DUE TO EARLIER RAIN TODAY AND WILL
LIKELY CONTINUE THROUGH THE NIGHT. CONDITIONS WILL IMPROVE WEDNESDAY
WITH CLEARING SKIES. WINDS MOSTLY 5-15KT.

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 260348
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
745 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 260348
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
745 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 260348
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
745 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 260348
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
745 PM PST TUE NOV 25 2014

.SHORT TERM...BUILDING UPPER RIDGE IS PUSHING MOISTURE STREAM
NORTHWARD THIS EVENING. STILL SOME RAIN OVER THE WASHINGTON CASCADES
AND BLUES HOWEVER EXPECT THIS TO DIMINISH OVERNIGHT. SATELLITE
SHOWING BREAKS IN THE CLOUD COVER. SHOULD BE PARTLY TO MOSTLY CLOUDY
TONIGHT. SOME PATCHY FOG OR LOW CLOUDS POSSIBLE. RIDGE WILL BRING A
PARTLY SUNNY DAY WEDNESDAY WITH MILD TEMPERATURES. AN UPPER TROUGH
APPROACHING THE PACIFIC NORTHWEST THURSDAY WILL RESULT IN INCREASING
CLOUDS AND A CHANCE FOR SOME LIGHT RAIN. MORE WIDESPREAD RAIN ON
FRIDAY AS THE TROUGH MOVES INTO THE AREA. MODELS STILL BRING A
STRONG COLD FRONT THROUGH FRIDAY NIGHT WITH MUCH COLDER TEMPS FOR
THE WEEKEND.  94

&&

.PREV DISC... /ISSUED 305 PM PST TUE NOV 25 2014/

SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  46  59  49  60 /  10   0  10  10
ALW  41  60  53  60 /  20   0  10  10
PSC  40  58  49  59 /  10   0  10  10
YKM  37  54  42  53 /  10  10  20  10
HRI  40  60  49  60 /  10   0  10  10
ELN  36  52  42  52 /  20  10  20  20
RDM  36  58  39  58 /   0   0  10  10
LGD  40  52  43  52 /  30   0  10  20
GCD  37  53  43  55 /  10   0  10  10
DLS  46  59  49  60 /  10  10  10  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 252306 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
305 PM PST TUE NOV 25 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

.LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

&&

.AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  48  60  49  60 /  10   0  10  10
ALW  51  62  53  60 /  20   0  10  10
PSC  47  58  49  59 /  10   0  10  10
YKM  39  54  42  53 /  10  10  20  10
HRI  48  61  49  60 /  10   0  10  10
ELN  42  52  42  52 /  30  10  20  20
RDM  38  58  39  58 /   0   0  10  10
LGD  43  53  43  52 /  30   0  10  20
GCD  42  54  43  55 /  10   0  10  10
DLS  47  61  49  60 /  10  10  10  20

&&

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

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

$$

91/84/84







000
FXUS66 KPDT 252306 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
305 PM PST TUE NOV 25 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH FRIDAY...MOISTURE PLUME COMING OVER
THE RIDGE OF HIGH PRESSURE CONTINUES TO IMPACT THE CENTRAL
WASHINGTON CASCADES AND THE NORTHERN BLUE MOUNTAINS WITH STEADY
RAIN. UPWARDS OF 2.5 INCHES OF RAIN HAVE FALLEN IN PARTS OF
NORTHEAST OREGON AND SOUTHEAST WASHINGTON WHILE 2 TO 3 INCHES HAVE
OCCURRED ACROSS PORTIONS OF THE EAST SLOPES OF THE WASHINGTON
CASCADES. SMALL CREEKS AND STREAMS HAVE SEEN SIGNIFICANT FLOW
INCREASES BUT THE MAIN STEM RIVERS CONTINUE TO RUN WELL BELOW
BANKFULL...EXCEPT FOR THE NACHES RIVER NEAR CLIFFDELL WHERE THE
RIVER IS EXPECTED TO CREST AROUND BANKFULL BY WEDNESDAY MORNING.
RATE RAINS ARE ON THE DOWNTREND AS THE MOISTURE PLUME HAS BEGUN TO
LIFT NORTHWARD AND WILL BE OUT OF THE FORECAST AREA BY LATER
TONIGHT...EXCEPT FOR SOME RAIN STILL ALONG THE CENTRAL WASHINGTON
CASCADES. THIS IS DUE TO THE HIGH PRESSURE RIDGE OFF THE COAST
BEGINNING TO MOVE INLAND AND WILL REMAIN OVER THE AREA THROUGH
WEDNESDAY. THE RIDGE WILL BEGIN TO FLATTEN HEADING INTO THURSDAY
WHICH WILL BRING SOME MOISTURE BACK OVER THE FORECAST AREA THROUGH
FRIDAY ONCE AGAIN INCREASING THE CHANCE OF PRECIPITATION. SNOW
LEVELS WILL REMAIN HIGH THROUGH FRIDAY SO NO SIGNIFICANT SNOW
EXPECTED FOR PASS LEVELS OR BELOW. TEMPERATURES WILL CONTINUE TO BE
MILD BOTH DAY AND NIGHT THROUGH FRIDAY.

.LONG TERM...FRIDAY NIGHT THROUGH MONDAY NIGHT...COLDER AIR WILL
BEGIN TO MOVE SOUTH ACROSS WASHINGTON AND NORTHERN OREGON FRIDAY
NIGHT AND THEN DOWN INTO CENTRAL OREGON BY LATE SATURDAY. THE BAND
OF PRECIPITATION WILL MAINLY BE OVER OREGON WITH RAIN TURNING TO
SNOW AS THE COLD AIR MOVES SOUTH. BY SUNDAY ALL PRECIPITATION ACROSS
THE REGION WILL BE SNOW. A LOW PRESSURE SYSTEM OFF THE CALIFORNIA
COAST WILL THEN LIFT A WARM FRONT OVER THE AREA SUNDAY NIGHT INTO
MONDAY. THIS WILL LEAD TO PRECIPITATION CHANGING FROM SNOW TO RAIN
EARLY MONDAY OVER CENTRAL OREGON AND THEN OVER THE REST OF THE AREA
AS THE WARM FRONT LIFTS NORTHWARD DURING THE DAY. THERE COULD BE A
POTENTIAL FOR SOME BRIEF FREEZING RAIN OR SLEET DURING THE
TRANSITION PERIOD BUT WILL LEAVE OUT OF THE FORECAST FOR NOW DUE TO
THE UNCERTAINTY OF HOW FAST THE COLD AIR WILL EXIT THE REGION. A
TROUGH OF LOW PRESSURE WILL THEN SWING PAST THE AREA TO THE NORTH
AND A RIDGE OF HIGH PRESSURE WILL BUILD OFF THE WEST COAST FOR A
TRANSITION TO A COOL NORTHWEST FLOW OVER THE AREA MONDAY NIGHT INTO
THE MIDWEEK. DMH

&&

.AVIATION...00Z TAFS...MVFR CONDITIONS WITH OCCASIONAL IFR
CONDITIONS AT KYKM AND KALW ARE POSSIBLE TONIGHT WITH LOW CEILINGS
AND VISIBILITY DUE TO MIST. ELSEWHERE...CONDITIONS WILL BE MAINLY
VFR. RAIN THIS AFTERNOON WILL END NEAR KPSC AND KALW THIS EVENING.
WINDS WILL OCCASIONALLY BE GUSTY THIS EVENING AND OVERNIGHT WITH
GUSTS TO 25 KTS POSSIBLE. DMH

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  48  60  49  60 /  10   0  10  10
ALW  51  62  53  60 /  20   0  10  10
PSC  47  58  49  59 /  10   0  10  10
YKM  39  54  42  53 /  10  10  20  10
HRI  48  61  49  60 /  10   0  10  10
ELN  42  52  42  52 /  30  10  20  20
RDM  38  58  39  58 /   0   0  10  10
LGD  43  53  43  52 /  30   0  10  20
GCD  42  54  43  55 /  10   0  10  10
DLS  47  61  49  60 /  10  10  10  20

&&

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

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

$$

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