Area Forecast Discussion
Issued by NWS Pendleton, OR

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000
FXUS66 KPDT 062227
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
230 PM PST FRI MAR 6 2015

.SHORT TERM...TONIGHT THROUGH MONDAY. STRONG UPPER LEVEL RIDGE
REMAINS OVER THE REGION THROUGH MONDAY. SKIES WILL BE MAINLY CLEAR
EXCEPT FOR SOME THIN CIRRUS MOVING THROUGH AT TIMES. DAYTIME TEMPS
WILL BE 10 DEGREES ABOVE NORMAL WITH HIGHS IN THE 60S. OVERNIGHT
TEMPS BELOW NORMAL DUE TO RADIATIONAL COOLING WITH A DRY AIRMASS.
LOW WILL BE IN THE 20S AND 30S. SURFACE GRADIENTS ARE WEAK RESULTING
IN WINDS LESS THAN 10KT FOR THE MOST PART.  94

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY...MONDAY NIGHT AN UPPER
RIDGE WILL CONTINUE TO BE CENTERED ALONG THE PACIFIC NORTHWEST
COAST. BY TUESDAY THE RIDGE WILL BE MOVING EASTWARD AS A TROUGH
STARTS APPROACHING COAST. MONDAY NIGHT AND TUESDAY WILL BE DRY AND
WITH THE RIDGE OVERHEAD TUESDAY TEMPERATURES WILL BE QUITE WARM FOR
MARCH. HIGHS WILL BE IN THE 60S AND LOWER 70S. TUESDAY NIGHT THE
TROUGH WILL PUSH A FRONT ACROSS THE CASCADE CREST. BOTH THE GFS AND
ECMWF HAVE RAIN MOVING INTO THE WESTERN HALF OF THE AREA BY SUNRISE
AND THEN ACROSS THE AREA DURING THE DAY WEDNESDAY. ANOTHER WAVE WILL
MOVE INTO THE AREA WEDNESDAY NIGHT AND THEN OUT OF THE AREA
THURSDAY. HAVE A SLIGHT CHANCE OF RAIN MAINLY IN THE MOUNTAINS
TUESDAY NIGHT THEN A CHANCE OF RAIN ACROSS THE AREA WEDNESDAY
THROUGH THURSDAY THOUGH IT WILL BE MORE OF A SLIGHT CHANCE IN THE
LOWER COLUMBIA BASIN. SNOW LEVELS WILL START OUT AT 7000-8000 FEET
TUESDAY NIGHT THEN DROP TO 5500-7000 FEET WEDNESDAY THROUGH THURSDAY
SO ALL AREAS SHOULD HAVE RAIN EXCEPT FOR THE VERY HIGHEST MOUNTAIN
PEAKS. AS THE TROUGH DEPARTS THURSDAY AFTERNOON, RIDGING WILL
QUICKLY REDEVELOP AND BE CENTERED OVER OUR AREA THURSDAY NIGHT AND
FRIDAY FOR A RETURN TO FAIR AND DRY WEATHER. TEMPERATURES WEDNESDAY
AND THURSDAY WILL DROP BACK TO THE LOWER TO MID 60S WITH MAINLY 50S
IN THE MOUNTAINS, COOLER BUT STILL 5-10 DEGREES ABOVE NORMAL. WITH
THE RIDGE OVERHEAD FRIDAY, TEMPERATURES WILL CLIMB SEVERAL DEGREES
TO THE MID TO UPPER 60S WITH MID 50S TO LOWER 60S IN THE MOUNTAINS.
PERRY

&&

.AVIATION...00Z TAFS...VFR CONDITIONS WILL CONTINUE FOR THE NEXT 24
HOURS. VARIABLE THIN CIRRUS WILL PERSIST OVER THE AREA RESULTING IN
SCT TO BKN CEILINGS AROUND 200-250. WINDS WILL REMAIN LESS THAN 10
KTS. PERRY

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  35  63  35  63 /   0   0   0   0
ALW  39  64  39  63 /   0   0   0   0
PSC  29  65  33  66 /   0   0   0   0
YKM  32  64  33  64 /   0   0   0   0
HRI  29  65  32  65 /   0   0   0   0
ELN  32  63  34  65 /   0   0   0   0
RDM  25  67  27  66 /   0   0   0   0
LGD  25  62  30  63 /   0   0   0   0
GCD  26  64  30  63 /   0   0   0   0
DLS  35  68  37  68 /   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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