Area Forecast Discussion
Issued by NWS Pendleton, OR

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000
FXUS66 KPDT 041005
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
305 AM PDT FRI SEP 4 2015

.SHORT TERM...THROUGH SUNDAY...UPPER LOW OVER NW WA STATE THIS
MORNING AND WILL BE THE FOCUS OF RAIN AND HIGH ELEVATION SNOW FOR
TONIGHT AND SATURDAY ACROSS THE AREA.  ALL SHORT TERM MODELS IN GOOD
AGREEMENT IN MOVING LOW TO SOUTHERN OR OVERNIGHT AND THEN NORTHEAST
TO NORTHERN ID BY SATURDAY EVENING.  THIS WILL PUT THE MAIN
PRECIPITATION ALONG AND EAST OF THIS PATH.  MOUNTAIN AREAS OF
EASTERN OREGON SHOULD GET THE MOST...1/2 TO 1 INCH.  THIS WILL HELP TO
ALLEVIATE THE FIRE DANGER. A SHORTWAVE TROUGH IN W-NW FLOW ON SUNDAY
WILL BRING A CHANCE FOR RAIN TO THE WASHINGTON CASCADES.
TEMPERATURES WILL BE 15-20 DEGREES BELOW NORMAL IN THE RAIN AREAS ON
SATURDAY WITH SOME RECOVERY ON SUNDAY.  LIGHT SNOW ACCUMULATIONS ARE
LIKELY ABOVE 6500 FEET IN THE MOUNTAINS AROUND JOHN DAY NORTHEAST TO
THE WALLOWAS ON SATURDAY.

.LONG TERM...SUNDAY NIGHT THROUGH THURSDAY...MODELS ARE INDICATING A
FAST MOVING MID/UPPER LEVEL SHORT WAVE MOVING ACROSS FORECAST AREA
SUNDAY NIGHT.  THIS SYSTEM WILL BRING VARIABLE MID AND HIGH CLOUDS
AND WILL BE DRY, EXCEPT FOR A SLIGHT CHANCE OF SHOWERS SUNDAY NIGHT
IN THE NORTHERN BLUE MOUNTAINS AND IN THE NORTH FACING SLOPES OF THE
WALLOWA MOUNTAINS. MONDAY THROUGH TUESDAY A MID/UPPER LEVEL RIDGE OF
HIGH PRESSURE MOVES ACROSS REGION WITH ASSOCIATED SINKING AIR
CAUSING DRY CONDITIONS FROM DAYBREAK MONDAY THROUGH SUNSET TUESDAY.
THEN AN UPSTREAM FLAT RIDGE OF HIGH PRESSURE OVER THE NORTHEAST
PACIFIC MOVES INLAND OVER THE PACIFIC NORTHWEST THUS YIELDING DRY
CONDITIONS THROUGH THURSDAY.  POLAN


&&

.AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL THROUGH THE
PERIOD. SKIES WILL START OUT MOSTLY CLEAR THIS MORNING, BUT EXPECT
INCREASING MID LEVEL CLOUDS AS A STORM SYSTEM APPROACHES THE AREA.
BY LATE MORNING EXPECT CIGS AT 4-6 THOUSAND FEET AT KBDN AND KRDM
WITH VCSH. KPDT AND KDLS WILL SEE VCSH AFTER 05/00Z. SOUTHEAST
WASHINGTON TAF SITES KALW, KPSC AND KYKM SHOULD NOT SEE
PRECIPITATION UNTIL AFTER 05/06Z FRIDAY NIGHT. WINDS TODAY WILL BE
MOSTLY NORTHERLY 5 TO 15 KTS.  POLAN


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  68  50  63  48 /  10  40  60  20
ALW  72  53  63  54 /  10  40  60  30
PSC  75  54  69  52 /   0  30  50  20
YKM  69  50  69  48 /  10  20  10  10
HRI  73  54  69  52 /  10  40  50  20
ELN  69  48  66  49 /  20  20  10  10
RDM  60  40  60  36 /  50  80  30  10
LGD  66  43  56  41 /  20  60  70  40
GCD  65  40  58  37 /  50  90  70  30
DLS  73  53  70  54 /  20  20  10  10

&&

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

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

$$

79/99/99



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