Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 301707 AAA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
858 AM PST FRI JAN 30 2015

.UPDATE...HIGH PRESSURE WAS KEEPING THE LOW CLOUDS AND FOG OVER THE
LOWER ELEVATIONS OF THE AREA. ELSEWHERE AND ACROSS THE HIGHER
ELEVATIONS MOSTLY SUNNY SKIES WILL PERSIST TODAY AS AFTN TEMPS CLIMB
TO ABOVE NORMAL. SOME ADJUSTMENTS WERE MADE TO SKY COVER AND TEMPS
OVER THE FAR EASTERN ZONES AND THE PRESENT SHORT TERM FORECAST
APPEARS ON TRACK FOR NOW.

&&

.PREV DISC... /ISSUED 230 AM PST FRI JAN 30 2015/

SHORT TERM...TODAY THROUGH SUNDAY. WATER VAPOR IMAGERY SHOWS A WEAK
UPPER LOW OVER THE REGION. THIS SYSTEM WILL MOVE SOUTH TODAY AS THE
RIDGE BUILDS BACK. THERE IS WIDESPREAD LOW CLOUDS AND FOG OVER THE
FORECAST AREA AND EXPECT MOST OF THIS TO REMAIN IN PLACE THROUGH THE
DAY. THE UPPER LOW HAS LIFTED THE STRATUS AND FOG JUST A BIT SO
DENSE FOG NOT MUCH OF AN ISSUE THIS MORNING AS COMPARED TO THE PAST
SEVERAL DAYS. VERY LIMITED TEMPERATURES RISE EXPECTED TODAY DUE TO
CLOUD COVER WITH HIGHS IN THE 30S TO LOWER 40S. THE RIDGE WILL
REMAIN OVER THE AREA SATURDAY WITH LITTLE CHANGE TO THE OVERALL
WEATHER. THE COLUMBIA BASIN AND ADJACENT VALLEYS WILL CONTINUE TO
HAVE LOW CLOUDS AND FOG WITH COOL TEMPERATURES. MAY SEE SOME EROSION
OF THE LOW CLOUD COVER IN CENTRAL OREGON THOUGH. A FRONTAL SYSTEM
WILL BE MOVING ACROSS THE PACIFIC NORTHWEST SUNDAY WITH A CHANCE OF
RAIN. SHOULD BE ENOUGH MIXING WITH THIS SYSTEM TO START LIFTING THE
FOG AND LOW CLOUDS BY AFTERNOON. 94

LONG TERM...SUNDAY NIGHT THROUGH FRIDAY...THE PERSISTENT UPPER
LEVEL RIDGE OVER THE PACIFIC NW WILL GRADUALLY SHIFT EAST TO THE
INTERMOUNTAIN REGION DURING THE WEEK WHICH WILL ALLOW A SWLY FLOW OF
MOIST AIR TO SPREAD INLAND ACROSS THE AREA. IT WILL BE MILD WITH
SNOW LEVELS MOSTLY ABOVE 4000-5000 FEET AND ABOVE 6000 FEET BY THE
END OF THE WEEK. THE WETTEST DAYS LOOK TO BE MONDAY...THURSDAY AND
FRIDAY. BY WEEKS END 2-3 INCHES OF QPF ARE POSSIBLE IN THE MOUNTAINS
AND .5 TO 1 INCH IN THE LOWER ELEVATIONS. THIS WILL BE MUCH NEEDED
MOISTURE AFTER A DRY JANUARY. THERE COULD BE A BIT OF A BREEZE ON
TUESDAY WITH A BETTER POTENTIAL ON FRIDAY...ALTHOUGH FOR FRIDAY
PLAYED IT A BIT CONSERVATIVE FOR NOW GIVEN THAT IT IS 7 DAYS OUT.
WITH THE INCREASED WIND DON`T EXPECT MUCH IN THE WAY OF COLUMBIA
BASIN FOG DURING THE FORECAST PERIOD.

AVIATION...12Z TAFS...WIDESPREAD MVFR/IFR CIGS AND VSBYS ARE
EXPECTED THROUGH THE FORECAST PERIOD. STRATUS WILL BE WIDESPREAD BUT
POSSIBLY CLEAR OUT AT KBDN AND KRDM THIS AFTERNOON OR EVENING. SOME
FOG IS LIKELY THIS MORNING AND AGAIN OVERNIGHT TONIGHT BUT NOT
EXPECTING WIDESPREAD VSBYS BELOW 1-2 MILES. A LITTLE DRIZZLE WILL
ALSO BE POSSIBLE THIS MORNING. WINDS WILL BE LIGHT NORTHERLY. 78

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  37  30  37  31 /   0   0  10  10
ALW  37  32  37  33 /   0   0  10  10
PSC  41  31  40  32 /   0   0  10  10
YKM  39  30  39  31 /   0   0   0  10
HRI  41  31  39  32 /   0   0   0  10
ELN  41  29  39  30 /   0   0  10  10
RDM  40  25  46  27 /   0   0   0  10
LGD  44  25  44  27 /   0   0   0  10
GCD  46  27  47  26 /   0   0   0  10
DLS  45  34  42  35 /   0   0   0  10

&&

.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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