FXUS66 KPDT 120531 AAA
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1032 PM PDT SUN MAY 11 2008
UPDATED AVIATION DISCUSSION
.UPDATE...BREEZY CONDITIONS CONTINUE THIS EVENING ACROSS PORTIONS OF
THE COLUMBIA BASIN AND SURROUNDING VALLEYS AND FOOTHILLS. THESE
WINDS ARE EXPECTED TO DECREASE AFTER SUNSET. RADAR INDICATES
ISOLATED TO SCATTERED LIGHT SHOWERS OVER THE BLUE MOUNTAINS AND
EASTWARD. THESE SHOWERS WILL DISSIPATE OVERNIGHT AS HIGH PRESSURE
THEN BUILDS INTO THE REGION. WILL UPDATE THE FORECAST LATER THIS
EVENING TO REMOVE EVENING WORDING...OTHERWISE...THE FORECAST LOOKS
TO BE ON TRACK. DK
&&
.AVIATION...VFR CONDITIONS WILL CONTINUE FOR THE NEXT 24 HOURS AT
ALL TAF SITES. BREEZY SURFACE WINDS WILL CONTINUE AT KDLS AND KPDT
UNTIL 09Z BEFORE DECREASING OVERNIGHT. WINDS WILL BE BETWEEN 5 TO 15
KTS TOMORROW. DK
&&
.PREV DISCUSSION... /ISSUED 200 PM PDT SUN MAY 11 2008/
SHORT TERM...TONIGHT THROUGH TUESDAY NIGHT...UPPER LEVEL TROUGH WILL
BE MOVING ACROSS THE REGION TONIGHT. PARTLY CLOUDY SKIES FOR MOST
LOCATIONS EXCEPT MOSTLY CLOUDY WITH ISOLATED SHOWERS OVER THE
MOUNTAINS. BREEZY/WINDY CONDITIONS WILL CONTINUE THROUGH SUNSET THEN
DIMINISH OVERNIGHT. STRONGEST WINDS WILL BE IN THE COLUMBIA
BASIN..KITTITAS VALLEY..AND THE GORGE SOUTHWARD TO REDMOND. LOCAL
GUSTS 30-40 MPH EXPECTED THROUGH ABOUT 8PM. UPPER RIDGE STARTS TO
BUILD INTO THE PACIFIC NORTHWEST ON MONDAY. THIS WILL PROVIDE FAIR
WEATHER WITH WARMER TEMPERATURES AND LIGHTER WINDS. INCREASING MID
AND HIGH LEVEL CLOUDS MONDAY NIGHT AS WARM FRONT APPROACHES THE PAC
NW. THIS FRONT WILL MOVE THROUGH ON TUESDAY/TUESDAY NIGHT WITH
MOSTLY CLOUDY SKIES AND POSSIBLY SOME LIGHT RAIN. SIGNIFICANT WARM
UP WILL BEGIN ON WEDNESDAY. 94
LONG TERM...WEDNESDAY THROUGH FRIDAY NIGHT...STRONG RIDGING WILL
CONTINUE TO BUILD INTO THE REGION WEDNESDAY THROUGH FRIDAY. ALTHOUGH
SIGNIFICANTLY DRIER AND WARMER CONDITIONS CAN BE EXPECTED...THERE IS
A SLIGHT CHANCE FOR MOUNTAINS SHOWERS ON WEDNESDAY AS A WARM FRONT
MOVES THROUGH THE AREA. OTHERWISE...MOSTLY CLEAR SKIES AND LIGHT
WINDS WILL ALLOW THE AREA TO WARM INTO THE MID 80S BY THURSDAY...AND
POSSIBLY INTO THE LOWER 90S ON FRIDAY. CALDER
SATURDAY AND SUNDAY...MODELS ARE STILL STAYING PRETTY CONSISTENT
ABOUT THE UPPER LEVEL RIDGE EXPECTED NEXT WEEK...GFS IS MOVING ABOUT
12 HOURS FASTER THAN THE ECMWF. SATURDAY WILL BE A BIT WARMER THAN
SUNDAY AS THE RIDGE PUSHES OFF TO THE EAST SUNDAY AFTERNOON. THERE
IS THE POSSIBILITY OF A MARINE PUSH OF COOLER AIR ASSOCIATED WITH A
SURFACE LOW SUNDAY NIGHT...SO HAVE KEPT TEMPERATURES JUST BELOW 90
ON SATURDAY AND IN THE MID 80S FOR SUNDAY. VIRTUALLY NO POPS IN THE
FORECAST PERIOD. HOWEVER THIS MARINE PUSH COULD PROVIDE SOME
MOUNTAIN SHOWERS SUNDAY NIGHT. WEBER
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT 38 64 40 67 / 10 10 0 10
ALW 41 63 44 66 / 10 10 0 10
PSC 40 68 42 72 / 10 10 0 10
YKM 34 66 40 65 / 0 10 0 10
HRI 38 67 40 69 / 10 10 0 10
ELN 38 63 38 61 / 10 10 0 10
RDM 24 62 32 69 / 10 10 0 10
LGD 35 59 33 63 / 20 10 0 10
GCD 33 61 36 65 / 10 10 0 10
DLS 41 66 44 66 / 10 10 0 10
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&
$$
TI:GGG
FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON
84
