Area Forecast Discussion
Issued by NWS Pendleton, OR

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000
FXUS66 KPDT 062316 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
318 PM PST SAT FEB 6 2016

UPDATED AVIATION DISCUSSION

.SHORT TERM...TONIGHT THROUGH TUESDAY...HIGH PRESSURE WILL BE
BUILDING OVER THE REGION FOR THE NEXT SEVERAL DAYS. THERE WILL BE A
WEAK IMPULSE MOVING OVER THE RIDGE EARLY SUNDAY WHICH MAY PRODUCE A
FEW SHOWERS OVER THE WASHINGTON CASCADES BUT AFTER THAT THE BUILDING
RIDGE CUTS OFF THE MOISTURE BY PUSHING IT FURTHER NORTHWARD. WILL
SEE A DEVELOPING AND STRENGTHENING INVERSION DEVELOP AS THE UPPER
LEVEL RIDGE SETTLE AND INTENSIFIES OVER THE REGION. THIS WILL LEAD
TO A BUILD UP OF LOW CLOUDS AND FOG IN AND AROUND THE LOWER COLUMBIA
BASIN OVER THE COMING DAYS.


.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY. NO MAJOR WEATHER
CONCERNS ARE ANTICIPATED IN THE LONG TERM FORECAST.  WASHINGTON AND
OREGON WILL PRIMARILY REMAIN UNDER THE INFLUENCE OF AN UPPER LEVEL
RIDGE THROUGH FRIDAY...BUT A SHORTWAVE WILL OVERRIDE THE RIDGE AND
BRING A SLIGHT CHANCE OF LOW CHANCE POPS (I.E. 10-30 PERCENT) ON WED
NIGHT AND THURS MORNING.  THIS SHORTWAVE WILL HELP WEAKEN THE HIGH
PRESSURE RIDGE SO THAT THE NEXT WAVE ON FRIDAY NIGHT AND SATURDAY
WILL BE STRONGER WITH A BETTER POTENTIAL FOR RAIN AND MOUNTAIN SNOW.
TEMPERATURES ARE EXPECTED TO BE ABOVE SEASONAL AVERAGE THROUGH THE
EXTENDED PERIOD. HIGHS WILL MAINLY RANGE IN THE MID 40S TO MID
50S...AND LOWS WILL BE IN THE 30S TO LOWER 40S.  WISTER


&&

.AVIATION...00Z TAFS. VFR CONDITIONS AND WINDS LESS THAN 12 KNOTS
WILL PREVAIL FOR THE NEXT 24 HOURS. ALTOCUMULUS AND ALTOSTRATUS
CLOUDS WILL BLANKET THE REGION WITH VARYING BASES AOA 6000 FEET AGL.
AN EASTERLY GRADIENT MAY BRING ENOUGH LOW LEVEL UPSLOPE IN THE
EASTERN COLUMBIA RIVER GORGE FOR SCT...POSSIBLY BKN...STRATUS CLOUDS
EARLY SUNDAY MORNING. WILL KEEP VFR AT KDLS BUT CANNOT RULE OUT MVFR
CIGS ARE POSSIBLE.  WISTER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  34  54  34  53 /   0   0   0   0
ALW  35  52  36  51 /   0   0   0   0
PSC  33  50  34  48 /   0   0   0   0
YKM  32  48  32  49 /   0   0   0   0
HRI  33  50  34  48 /   0   0   0   0
ELN  29  41  30  44 /   0  10   0   0
RDM  33  56  35  57 /  10   0   0   0
LGD  30  46  34  49 /   0   0   0   0
GCD  29  49  32  50 /  10   0   0   0
DLS  36  54  37  53 /   0   0   0   0

&&

.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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