Area Forecast Discussion
Issued by NWS Pendleton, OR

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000
FXUS66 KPDT 310318
AFDPDT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
815 PM PDT SAT AUG 30 2014

.UPDATE...UPPER LEVEL LOW PRESSURE SYSTEM IS PUSHING EAST OF THE
REGION WITH ONLY A FEW LINGERING SHOWERS OVER EASTERN OREGON.  THOSE
SHOWERS WILL BE ENDING BY LATE EVENING WITH SOME CLEARING OVERNIGHT
BEFORE NEXT BATCH OF MID AND HIGH CLOUDS MOVE IN SUNDAY AS SEEN ON
THE SATELLITE PICTURES.  I HAVE UPDATED TO REMOVE THE CHANCE OF
SHOWER OVERNIGHT...ADJUSTED THE SKY COVER AND WITH THE CLEARER
SKIES...I HAVE ADJUSTED THE OVERNIGHT LOW TEMPERATURES...MAINLY IN
CENTRAL OREGON WHERE CLEARING SHOULD BE THE GREATEST. ML

&&


.PREV DISC... /ISSUED 230 PM PDT SAT AUG 30 2014/

SHORT TERM...TONIGHT THROUGH TUESDAY. WATER VAPOR SATELLITE IMAGERY
SHOWING UPPER LEVEL JET AND SHORT WAVE MOVING INTO THE REGION TODAY.
FAIR AMOUNT OF CLOUD COVER AND SCATTERED SHOWERS THIS AFTERNOON.
EXPECT THIS TO CONTINUE INTO THE EVENING THEN DIMINISH OVERNIGHT.
HIGHEST AMOUNT OF PRECIPITATION FORECAST BY MODELS IS OVER THE
NORTHEAST OREGON MOUNTAINS. COULD SEE SOME HEAVIER RAIN AND ISOLATED
THUNDERSTORMS HERE. NORTHWEST FLOW ALOFT SUNDAY WITH PARTLY CLOUDY
SKIES AND CONTINUED COOL TEMPERATURES. DRY NORTHWEST FLOW CONTINUES
INTO MONDAY WITH BUILDING HEIGHTS. SHOULD BE MOSTLY SUNNY AND
WARMER. ANOTHER UPPER LEVEL TROUGH WILL BE APPROACHING THE PACIFIC
NORTHWEST LATER TUESDAY. THIS SYSTEM ARRIVES LATE ENOUGH THAT WE
WILL HAVE ANOTHER MOSTLY SUNNY DAY.  94

LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...A PERSISTENT UPPER
LEVEL TROUGH WILL BE OVER THE REGION TUESDAY NIGHT BUT WITH VERY
LITTLE PRECIPITATION. THIS TROUGH WILL SPLIT WITH THE NORTHERN
PORTION CONTINUING EASTWARD AND THE SOUTHERN PORTION DROPPING SOUTH
OVER NORTHERN CALIFORNIA WEDNESDAY AND THURSDAY. THIS WILL PLACE THE
FORECAST IN A DRY NORTHWEST FLOW WITH A RIDGE AMPLIFYING IN THE
EASTERN PACIFIC. THEREFORE THE REMAINDER OF THE EXTENDED PERIOD WILL
SEE MOSTLY SUNNY SKIES AND GRADUAL WARMING TEMPERATURES HEADING INTO
THE WEEKEND.

AVIATION...00Z TAFS...VFR CONDITIONS WILL BE PREVALENT FOR THE NEXT
24 HOURS BUT UNDER MOSTLY CLOUDY SKIES THROUGH THIS EVENING WITH
CEILINGS AROUND 8000-12000 FEET MSL. SOME SHOWERS AND POTENTIAL
THUNDERSTORMS WILL BE MAINLY IMPACT SITES KPDT AND KALW THROUGH
EARLY THIS EVENING. WINDS OF 10 TO 20 KTS WILL CONTINUE THROUGH THE
EVENING THEN DECREASE OVERNIGHT.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  50  74  49  79 /  10  10  10  10
ALW  54  76  54  80 /  10  10  10  10
PSC  53  79  53  83 /  10  10  10   0
YKM  46  75  51  80 /  10  10  10  10
HRI  52  78  52  82 /  10  10  10   0
ELN  46  71  49  75 /  20  10  10  10
RDM  39  72  41  78 /  10  10   0   0
LGD  44  70  45  76 /  20  10  10  10
GCD  41  71  41  78 /  20  10  10   0
DLS  51  75  53  80 /  10  10  10  10

&&

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

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

$$

93/91/91








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