Weather Service Report


195 
FXUS66 KPDT 271149 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE PENDLETON OR
349 AM PST TUE JAN 27 2015

UPDATED AVIATION DISCUSSION

.SHORT TERM...TODAY THROUGH THURSDAY AFTERNOON...INCREASING MID AND 
UPPER LEVEL CLOUDS STREAMING THROUGH THE MID/UPPER LEVEL RIDGE 
TODAY AS A RESULT OF A WEAK UPPER LEVEL DISTURBANCE MOVING THROUGH 
THE RIDGE. MEANWHILE THE LOW STRATUS CLOUDS AND FOG WILL PERSIST 
ACROSS THE LOWER COLUMBIA BASIN. A DENSE FOG ADVISORY REMAINS IN 
EFFECT UNTIL NOON TODAY FOR THE LOWER COLUMBIA BASIN, ADJACENT 
VALLEYS AND THE FOOTHILLS OF THE BLUE MOUNTAINS. EXPECT LITTLE 
SCOURING OUT OF THE LOW CLOUDS AND FOG. ANOTHER VERY WEAK SYSTEM 
MOVES THROUGH THE FORECAST AREA WEDNESDAY NIGHT AND THURSDAY FOR A 
SLIGHT CHANCE OF RAIN IN THE BLUE MOUNTAINS AN WALLOWA COUNTY.
POLAN

.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...UPPER LEVEL HIGH 
PRESSURE WILL LINGER OVER THE REGION THURSDAY NIGHT INTO SATURDAY. 
THUS EXPECT MAINLY DRY CONDITIONS. ALSO FOG AND LOW CLOUDINESS WILL 
CONTINUE TO IMPACT LOWER ELEVATIONS AREAS (GENERALLY BELOW 3000 FT 
MSL) AND A FEW HIGH ELEVATION VALLEYS. HIGH TEMPS ABOVE 3000 FT WILL 
CONTINUE MILD, BUT HIGH TEMPS BELOW 3000 FT WILL BE SEASONALLY COOL. 
PACIFIC SYSTEMS LOOK TO FLATTEN THE RIDGE SUNDAY INTO MONDAY. THUS 
EXPECT CHANCES FOR PRECIPITATION TO RETURN TO THE REGION. AT THIS 
TIME SNOW LEVELS LOOK TO LOWER TO BETWEEN 2500 AND 4000 FT MSL 
OVERNIGHT, BUT SHOULD BE A BIT HIGHER DURING THE LATE MORNING AND 
AFTERNOON SUNDAY AND MONDAY. SHOULD SEE SOME INCREASE IN WINDS 
ACROSS THE BASIN BY MONDAY. 90 

&&

.AVIATION...12Z TAFS...IFR, LIFR AND VLIFR CONDITIONS WILL CONTINUE 
THROUGH AT LEAST THIS MORNING AT KDLS, KPDT, KYKM, KALW AND KPSC. 
DAYTIME HEATING AND/OR WEAK LIFT DUE TO A WEAK SYSTEM MOVING ACROSS 
THE AREA WILL CAUSE VARYING DEGREES OF IMPROVEMENT DURING THE 
AFTERNOON AND EVENING AT THESE SITES. KRDM AND KBDN WILL REMAIN VFR 
WITH CIGS LOWERING TO 7-8000 FT AGL BY EVENING. WINDS WILL MAINLY 
RUN 10 KTS OR LESS THROUGH THE PERIOD. 90 

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  38  35  40  35 /   0   0   0  10 
ALW  39  35  41  35 /   0  10  10  10 
PSC  41  34  42  35 /   0   0   0  10 
YKM  36  30  38  33 /   0  10   0   0 
HRI  40  35  42  36 /   0  10   0  10 
ELN  39  32  39  33 /  10  10   0  10 
RDM  60  34  55  33 /   0   0  10  10 
LGD  51  36  49  31 /   0  10  10  10 
GCD  54  35  51  34 /  10  10  10  10 
DLS  45  38  45  39 /  10  20  10  10 

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...DENSE FOG ADVISORY UNTIL NOON PST TODAY ORZ041-044-507-508-510.

WA...DENSE FOG ADVISORY UNTIL NOON PST TODAY WAZ024-026>029-521.

&&

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

$$

99/90/90




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Western Regional Climate Center, wrcc@dri.edu