Weather Service Report


277 
FXUS66 KPDT 160853
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
153 AM PDT WED APR 16 2014

.SHORT TERM...TODAY THROUGH FRIDAY...AN UPPER LEVEL RIDGE WILL BE 
OVER THE REGION TODAY...FOLLOWED BY A RELATIVELY STRONG TROUGH ON 
THURSDAY AND THURSDAY NIGHT. THE TROUGH WILL MOVE EAST OF THE REGION 
ON FRIDAY. FOR TODAY INTO THIS EVENING EXPECT GENERALLY CLOUDY SKIES 
WITH A LITTLE LIGHT RAIN POSSIBLE MOSTLY NORTH...BUT QPF AMOUNTS 
WILL BE LIGHT. TEMPERATURES WILL BE MOSTLY IN THE 60S LOWER 
ELEVATIONS WITH 40S AND 50S MOUNTAINS. THE MAIN RAIN EVENT WILL 
BEGIN ON THURSDAY ESPECIALLY DURING THE AFTERNOON AS THE THE UPPER 
LEVEL TROUGH APPROACHES. A GENERAL RAINFALL IS EXPECTED AREAWIDE 
LATE THURSDAY AND THURSDAY NIGHT ENDING IN THE EAST FRIDAY MORNING. 
HEAVIEST AMOUNTS OF PRECIPTATION WILL BE ALONG THE CASCADE CREST AND 
OVER THE EASTERN MOUNTAINS WITH AMOUNTS OF .25 TO .50 INCHES 
POSSIBLE. SNOW LEVELS WILL BE LOWERING LATE THURSDAY NIGHT INTO 
FRIDAY MORNING...BUT THIS WILL OCCUR AS THE PRECIPITATION IS 
SHUTTING OFF. THUS NOT EXPECTING MUCH MOUNTAIN SNOW. IT WILL BE 
WINDY FRIDAY ACROSS MUCH OF THE LOWER ELEVATIONS. 78 

.LONG TERM...FRIDAY NIGHT THROUGH THROUGH TUESDAY...A FLAT RIDGE 
WILL PASS OVER WASHINGTON AND OREGON FRIDAY NIGHT AND SATURDAY... 
FOLLOWED BY A SOUTHWEST FLOW ALOFT SUNDAY. SUBSIDENCE FROM THE RIDGE 
WILL KEEP TEMPERATURES WARM SATURDAY AND SUNDAY. WEAK IMPULSES 
MOVING THROUGH THE SOUTHWEST FLOW MAY TRIGGER A FEW SHOWERS IN THE 
CASCADES SATURDAY NIGHT AND SUNDAY. ANOTHER FRONT WILL MOVE THROUGH 
EASTERN WASHINGTON AND OREGON SUNDAY NIGHT AND MONDAY WITH SHOWERS 
OVER MOST OF THE AREA. MONDAY NIGHT AND TUESDAY THE GFS HAS A CUTOFF 
LOW DEVELOPING OVER NORTHERN CALIFORNIA AND ECMWF HAS AN ELONGATED 
TROUGH NEAR THE COAST. BOTH OF THESE SOLUTIONS WILL PRODUCE SHOWERS 
OVER EASTERN WASHINGTON AND OREGON. COONFIELD

&&

.AVIATION...06Z TAFS. VFR CONDITIONS ARE FORECAST FOR THE NEXT 24 
HOURS. CLOUDS WILL INCREASE AND CIGS WILL LOWER TO 5000-10,000 FEET 
AGL OVERNIGHT...AND THERE WILL BE AREAS OF LIGHT RAIN DEVELOPING 
WEDNESDAY...MAINLY NEAR KDLS AND KYKM.  HOWEVER...THE PROBABILITY OF 
MVFR OR LESS IS SLIM. THE LOW ALTOCUMULUS/ALTOSTRATUS CLOUDS WILL 
REMAIN THROUGH THE DAY AND INTO THE EVENING HOURS.  WINDS 5 TO 15 
KNOTS ARE EXPECTED THROUGH THE PERIOD.  WISTER


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  61  44  63  42 /  20  10  70  80 
ALW  61  47  64  46 /  20  10  70  80 
PSC  66  49  64  44 /  20  10  60  60 
YKM  60  43  61  41 /  30  20  60  20 
HRI  65  45  63  43 /  20  10  60  60 
ELN  56  43  59  41 /  30  20  60  30 
RDM  57  34  59  31 /  20   0  60  30 
LGD  53  38  65  43 /  20  10  30  80 
GCD  54  35  64  39 /  10  10  30  70 
DLS  61  47  61  43 /  30  20  60  30 

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

THREAT INDEX
TODAY : GREEN
THURSDAY : GREEN
FRIDAY : GREEN

GREEN: NONE OR LIMITED NEED FOR WATCHES, WARNINGS, OR ADVISORIES.
YELLOW: A FEW WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.
RED: NUMEROUS WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT.

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

$$

78/76/76






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