Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 291755 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
955 AM PST THU JAN 29 2015

UPDATED AVIATION DISCUSSION

.UPDATE...AREAS OF LOW CLOUDS AND FOG PERSIST ACROSS PORTIONS OF THE
REGION THIS MORNING AND A DENSE FOG ADVISORY CONTINUES FOR CENTRAL
OREGON AND THE KITTITAS VALLEY UNTIL 10 AM. OTHERWISE SOME HIGH
LEVEL CLOUDS WERE ACROSS THE REGION AND ARE EXPECTED FOR THE
REMAINDER OF THE DAY. AFTN HIGH TEMPS SHOULD BE NEAR NORMAL...EXCEPT
WHERE LOW CLOUDS AND FOG PERSIST...AND THE PRESENT SHORT TERM
FORECAST APPEARS ON TRACK FOR NOW.

&&

.AVIATION...18Z TAFS...IFR OR LIFR CIGS ARE EXPECTED UNTIL 19-21Z
TODAY AT KALW, KPDT, KYKM, KDLS DUE TO FOG AND LOW CLOUDS. KRDM AND
KBDN WILL BE VLIFR UNTIL 19-20Z TODAY DUE TO FOG AND CIGS NEAR 500
FEET AGL....AFTER IMPROVEMENT THIS AFTERNOON AND EVENING EXPECT
VLIFR CIGS/VIS TO RETURN AT KRDM AND KBDN AFTER 10Z FRIDAY IN FOG.
KPSC WILL HAVE MVFR FOR THE NEXT 24 HOURS DUE TO CIGS NEAR 1500 FT
AGL. OTHERWISE, MID AND HIGH CLOUDS WILL OCCUR OUTSIDE OF AREAS
AFFECTED BY THE LOW STRATUS AND ASSOCIATED FOG. WINDS WILL REMAIN
LIGHT AOB 10KTS AT ALL TAF SITES FOR THE NEXT 24 HOURS.

&&

.PREV DISC... /ISSUED 359 AM PST THU JAN 29 2015/

SHORT TERM...TODAY THROUGH SATURDAY. A WEAK UPPER TROUGH WILL MOVE
ACROSS THE REGION TODAY. NOT EXPECTING ANY PRECIPITATION WITH THIS
SYSTEM. JUST AN INCREASE IN MID AND HIGH LEVEL CLOUDS. OBSERVATIONS
INDICATE FAIRLY EXTENSIVE AREA OF STRATUS CONTINUES OVER THE
COLUMBIA BASIN AND ADJACENT VALLEYS...EXTENDING INTO CENTRAL OREGON
TO REDMOND AND BEND. AREAS OF FOG AND PATCHY DRIZZLE CONTINUE AS
WELL. AS THE TROUGH MOVES EAST OF THE REGION TONIGHT THE UPPER
RIDGE BUILDS BACK FRIDAY INTO SATURDAY. LOW LEVEL INVERSION REMAINS
IN PLACE WITH STRATUS AND FOG CONTINUING THE NEXT FEW DAYS OVER THE
COLUMBIA BASIN. HIGH TEMPS WILL BE IN THE 40S.   94

LONG TERM...SATURDAY NIGHT THROUGH WEDNESDAY...UPPER LEVEL RIDGE OF
HIGH PRESSURE SATURDAY NIGHT FOR DRY CONDITIONS FOLLOWED BY A WARM
FRONT AND ASSOCIATED PRECIPITATION DURING THE DAY ON SUNDAY WITH
SNOW LEVELS 6000-6500 FEET. SUNDAY NIGHT RAIN AND SNOW LIKELY WITH
SNOW LEVEL AROUND 4000 FEET. MONDAY/MONDAY NIGHT ANOTHER WARM FRONT
BRINGS RAIN AND MOUNTAIN SNOW WITH THE SNOW LEVEL AROUND 4500 FEET.
TUESDAY AND WEDNESDAY AN UPPER LEVEL RIDGE BUILDS BACK OVER REGION
FOR DRY CONDITIONS.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  32  40  30 /  10  10   0   0
ALW  42  35  40  33 /  10  10  10   0
PSC  44  33  41  31 /  10   0  10   0
YKM  42  31  41  29 /  10   0   0   0
HRI  40  33  41  31 /  10   0   0   0
ELN  45  30  40  29 /  10   0   0   0
RDM  48  29  48  27 /  10   0   0   0
LGD  48  29  46  28 /  10  10   0   0
GCD  51  29  49  27 /  10  10   0   0
DLS  46  36  44  34 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING ORZ511.

WA...DENSE FOG ADVISORY UNTIL 10 AM PST THIS MORNING WAZ026.

&&

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

$$

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