Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 300822 CCA
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
109 AM PDT TUE SEP 30 2014

CORRECTED TIMING OF FREEZE WARNING FOR TONIGHT IN THE HIGHLIGHTS
SECTION

.SHORT TERM...TODAY THROUGH THURSDAY...A COLD FRONT WHICH MOVED
ACROSS THE CWA LAST EVENING BROUGHT SOME RAIN SHOWERS TO THE EASTERN
CWA. THESE HAVE MOVED OFF TO THE EAST. WINDS HAVE PICKED UP WITH AND
BEHIND THE FRONT TO LOCALLY BREEZY TO WINDY. THE WINDS ARE EXPECTED
TO INCREASE FURTHER TODAY. WINDS IN THE KITTITAS VALLEY ARE EXPECTED
TO REACH WIND ADVISORY SPEEDS AROUND 15-16Z THIS MORNING. WILL BE
ISSUING A WIND ADVISORY FROM 15Z-00Z TODAY FOR THE KITTITAS VALLEY
AS A RESULT. THE STRONGEST WINDS WILL OCCUR DURING TIMES OF MAXIMUM
MIXING THIS AFTERNOON. AFTER THAT TIME THE WINDS ARE EXPECTED TO
DIMINISH QUICKLY TONIGHT AS PRESSURE GRADIENTS RELAX AND DUE TO
NIGHT TIME STABILIZATION OF THE ATMOSPHERE. THE NEXT CONCERN WILL BE
COLD TEMPERATURES TONIGHT AND WEDNESDAY NIGHT. TEMPERATURES TONIGHT
IN CENTRAL OREGON (MADRAS...REDMOND AND BEND) ARE ALL EXPECTED TO
DROP TO OR BELOW FREEZING. WILL BE ISSUING A FREEZE WARNING THERE
FOR TONIGHT. ON WEDNESDAY NIGHT TEMPERATURES WILL NOT BE AS COLD. ON
WEDNESDAY COOL TEMPERATURE WILL CONTINUE IN A NORTHWEST FLOW ALOFT.
AFTER THAT AN UPPER RIDGE WILL BEGIN TO BUILD BACK OVER THE REGION
BEGINNING ON THURSDAY WITH A WARMING TREND. 88

.LONG TERM...THURSDAY NIGHT THROUGH TUESDAY...A RIDGE OF HIGH
PRESSURE WILL BUILD OVER WESTERN NORTH AMERICA THROUGH THE FORECAST
PERIOD. THIS WILL PLACE THE FORECAST AREA IN FAST WESTERLY FLOW
ALOFT RESULTING IN SOME CLOUD COVER BUT LITTLE IN THE WAY OF
PRECIPITATION. IT WILL BE WARM WITH TEMPERATURES ABOVE NORMAL FOR
THIS TIME OF YEAR. ON SATURDAY...A WEAK DISTURBANCE WILL FLATTEN THE
RIDGE AND PERHAPS PUSH A WEAK COOL FRONT ACROSS THE REGION FROM THE
NORTH. THE MODELS ARE SHOWING LIMITED MOISTURE WITH THIS FEATURE SO
FOR NOW HAVE CONFINED POPS TO THE WASHINGTON CASCADE CREST. ANY
MOISTURE OVER THE AREA WILL BE SHORT LIVED...WITH A RETURN TO DRY
CONDITIONS FOR EARLY NEXT WEEK. 78

&&

.AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL THROUGH THE
FORECAST PERIOD. FOR MUCH OF THE DAY EXPECT SCT-BKN STRATOCUMULUS AT
4-6 KFT WITH SOME MID LEVEL CLOUDS ABOVE. DO NOT EXPECT MUCH IN THE
WAY OF SHOWER ACTIVITY TODAY AT THE TAF SITES. WINDS WILL BE A
CONCERN WITH WEST WINDS OF 15-25 MPH. SOME HIGHER GUSTS WILL BE
POSSIBLE AT KPDT AND KDLS. WINDS WILL DIMINISH AFTER 02Z THIS
EVENING. 78

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  64  38  66  40 /  10  10   0   0
ALW  65  41  66  44 /  10  10   0   0
PSC  69  38  69  41 /  10   0   0   0
YKM  66  34  67  41 /  10   0   0   0
HRI  68  36  68  40 /  10   0   0   0
ELN  61  38  63  38 /  10   0   0   0
RDM  60  26  63  31 /   0   0   0   0
LGD  57  34  62  36 /  20  10   0   0
GCD  57  28  63  34 /  20  10   0   0
DLS  65  42  68  44 /  10  10   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING FROM 10 PM THIS EVENING TO 9 AM PDT WEDNESDAY
     ORZ511.

WA...WIND ADVISORY FROM 8 AM THIS MORNING TO 5 PM PDT THIS AFTERNOON
     WAZ026.

&&

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

$$

88/78/78





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