Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 010537 AAA
AFDPDT

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
1037 PM PDT TUE SEP 30 2014

UPDATED AVIATION DISCUSSION

.SHORT TERM...EVENING UPDATE...AN UPPER TROUGH CONTINUES TO MOVE
THROUGH NORTHEAST OREGON THIS EVENING. THE TROUGH`S AXIS WILL BE OUT
OF OUR AREA WITHIN THE NEXT TWO HOURS. ISOLATED TO SCATTERED SHOWERS
CONTINUE ALONG THE TROUGH AXIS AND ARE MOVING THROUGH UNION AND
WALLOWA COUNTIES. ALSO UPSLOPE FLOW INTO THE BLUES WILL KEEP DEEPER
CLOUDS WITH STRAY SHOWERS GOING UNTIL AROUND MIDNIGHT. A FEW SHOWERS
WILL PERSIST ALONG THE CASCADE CREST AT TIMES THROUGH THE NIGHT.
UPSLOPE FLOW INTO CENTRAL OREGON HAS CREATED MOSTLY CLOUDY
CONDITIONS AND HAVE UPDATED CLOUD COVER FOR THIS EVENING TO REFLECT
THIS TREND. STILL EXPECT SKIES TO CLEAR OVERNIGHT ALLOWING FOR GOOD
RADIATIONAL COOLING IN CENTRAL OREGON, THUS WILL CONTINUE THE FREEZE
WARNING. OVERALL FORECASTS ARE ON TRACK, AND OTHER THAN THE
MENTIONED CLOUD COVER CHANGES, UPDATES INCLUDED SOME ADJUSTMENTS TO
LOW TEMPS AND WIND SPEEDS. 90

.LONG TERM...PREVIOUS DISCUSSION...EXPECT A QUIET PERIOD DUE TO AN
UPPER LEVEL RIDGE OVER MUCH OF THE AREA. A VERY WEAK DISTURBANCE
WILL MOVE OVER THE RIDGE FRIDAY NIGHT INTO SATURDAY BRINGING A
SLIGHT CHANCE OF RAIN SHOWERS TO THE EAST SLOPES OF THE WASHINGTON
CASCADES. OTHERWISE...THE REST OF THE REGION STAYS DRY AND WARM OVER
THE WEEKEND WITH TEMPERATURES FORECAST TO BE ABOUT 10 DEGREES ABOVE
AVERAGE. BY MONDAY AND TUESDAY THE UPPER LEVEL RIDGE IS PROGGED TO
WEAKEN SOME AS A WEAK UPPER LEVEL DISTURBANCE APPROACHES FROM OFF
THE NORTHERN CALIFORNIA COAST. THIS WEAKENING OF THE RIDGE WILL
BRING MORE OF A WEST TO NORTHWEST FLOW POSSIBLY BRINGING INCREASED
MOISTURE/SHOWER CHANCES MAINLY TO THE EAST SLOPES OF THE CASCADES.
TEMPERATURES ARE EXPECTED TO 5 TO 10 DEGREES ABOVE AVERAGE THROUGH
EARLY NEXT WEEK.

&&

.AVIATION...06Z TAFS...VFR CONDITIONS ARE EXPECTED THROUGH THE NEXT
24 HOURS. CIGS BETWEEN 4500 AND 9000 FT AGL WILL BE POSSIBLE EARLY
IN THE PERIOD AT KRDM, KBDN AND KALW DUE TO UPSLOPE AFFECTS. BRIEF
CIGS IN THIS RANGE MAY BE POSSIBLE AT KPDT, BUT WILL INDICATE SCT
CLOUDS FOR NOW. CLR SKIES EXPECTED THROUGH THE NIGHT AT KDLS, KYKM
AND KPSC. WILL SEE FEW-SCT CIRRUS MOVE OVER THE REGION WEDNESDAY.
GUSTY WINDS AT KYKM AND KPDT WILL DECREASE DURING THE EARLY MORNING
HOURS. SUSTAINED WINDS WEDNESDAY WILL RUN BETWEEN 6 AND 15 KTS, WITH
STRONGEST WINDS AT KDLS. 90

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  43  67  39  69 /  20   0   0   0
ALW  46  67  43  70 /  20   0   0   0
PSC  41  70  36  71 /  10   0   0   0
YKM  38  68  38  68 /  10   0   0   0
HRI  40  69  37  72 /  20   0   0   0
ELN  42  65  40  67 /  10   0   0   0
RDM  29  64  28  71 /  10   0   0   0
LGD  38  63  34  67 /  20   0   0   0
GCD  34  64  31  71 /  20  10   0   0
DLS  46  69  42  74 /  10   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WARNING UNTIL 9 AM PDT WEDNESDAY ORZ511.

WA...NONE.
&&

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

$$

90/77/90







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