Weather Service Report


973 
FXUS66 KPDT 161000
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
300 AM PDT TUE SEP 16 2014

.SHORT TERM...TODAY THROUGH THURSDAY. SATELLITE SHOWING AN UPPER 
LEVEL SHORT WAVE MOVING ACROSS THE REGION EARLY THIS MORNING WITH 
SOME CLOUDINESS AND A FEW SHOWERS. AFTER THIS SYSTEM MOVES THROUGH 
EXPECT CLEARING SKIES. SOUTHERLY FLOW ALOFT WITH A LARGE SCALE UPPER 
LOW OFFSHORE. THE AIRMASS IS WARM WITH 850MB TEMPS NEAR 21C. HIGHS 
TODAY WILL BE IN THE 80S WHICH IS ABOUT 10 DEGREES ABOVE NORMAL. THE 
UPPER LOW WILL BE APPROACHING THE WEST COAST ON WEDNESDAY. THIS WILL 
BRING INCREASING MID AND HIGH LEVEL CLOUDS. MODELS CONTINUE TO SHOW 
MOST OF THE PRECIPITATION STAYING WEST OF THE CASCADES THROUGH THE 
DAY. ANOTHER DAY WITH SOUTHERLY FLOW AND A WARM AIRMASS SUPPORTING 
HIGHS INTO THE 80S. THE UPPER TROUGH MOVES THROUGH THE AREA 
THURSDAY. THIS WILL BRING MOSTLY CLOUDY SKIES WITH SCATTERED SHOWERS 
AND COOLER TEMPERATURES.  94

.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...MID/UPPER LEVEL TROUGH 
WHICH MOVED INLAND DURING THE DAYTIME ON THURSDAY WILL HAVE MOVED 
INTO IDAHO/MONTANA THURSDAY NIGHT THUS ALLOWING A RIDGE OF HIGH 
PRESSURE OFFSHORE TO BEGIN BUILDING EASTWARD OVER THE PACIFIC 
NORTHWEST ON FRIDAY. THE RIDGE WILL PERSIST OVER THE REGION THROUGH 
THE WEEKEND AND THROUGH MONDAY AS WELL FOR DRY AND STABLE CONDITIONS 
WITH DAYTIME HIGH TEMPERATURES RUNNING 5-10 DEGREES ABOVE NORMAL.  
POLAN

&&

.AVIATION...12Z TAFS...VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24 
HOURS. THERE WILL BE A LOT OF HIGH CLOUDS BETWEEN 150-250 WHICH MAY 
LIMIT HEATING ON TUESDAY. WINDS WILL REMAIN LIGHT AND 15 KTS OR LESS 
THROUGH TUESDAY EVENING.  POLAN

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  87  54  84  57 /  10   0   0  10 
ALW  88  58  85  61 /  10   0   0  10 
PSC  87  54  86  59 /  10   0   0  10 
YKM  86  53  83  57 /   0   0  10  20 
HRI  88  50  86  57 /  10   0   0  10 
ELN  88  55  84  58 /  10   0  10  30 
RDM  87  47  83  48 /   0   0  10  20 
LGD  89  50  87  52 /  10  10  10  20 
GCD  89  52  87  51 /  10  10  10  20 
DLS  87  55  84  60 /   0  10  10  30 

&&

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

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

$$

94/99/99



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