As a bonus, maybe it will keep some of the Labor Day crowd away.
http://wsdot.wa.gov/traffic/forecast/warnings.aspx?zoneid=WA501&idcd=KPDT&wtype=SPS&Wtypedesc=Special%20Weather%20Statement&czname=East%20Slopes%20of%20the%20Central%20Cascades%20of%20Washington#WarningSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
457 AM PDT THU SEP 3 2009
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EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-
WALLOWA COUNTY-FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
INCLUDING THE CITIES OF...THE DALLES...DUFUR...MADRAS...MAUPIN...
MORO...BEND...LA PINE...PRINEVILLE...REDMOND...ARLINGTON...
BOARDMAN...HERMISTON...LA GRANDE...ELGIN...UNION...ENTERPRISE...
JOSEPH...WALLOWA...HEPPNER...PENDLETON...MEACHAM...TOLLGATE...
UKIAH...CONDON...FOSSIL...SPRAY...JOHN DAY...MONUMENT...
DAYVILLE...LONG CREEK...MITCHELL...SENECA...WHITE SALMON...
ELLENSBURG...SUNNYSIDE...YAKIMA...CONNELL...PROSSER...
TRI-CITIES...DAYTON...WAITSBURG...WALLA WALLA...CLE ELUM...
EASTON...ROSLYN...NACHES...GOLDENDALE...APPLETON...TROUT LAKE...
BICKLETON
457 AM PDT THU SEP 3 2009
...COOLER WITH PERIODS OF RAIN AND HIGHER ELEVATION SNOW POSSIBLE
FOR THE LABOR DAY WEEKEND...
AN UPPER LEVEL TROUGH WILL BECOME POSITIONED OVER THE PACIFIC
NORTHWEST DURING THE UPCOMING LABOR DAY HOLIDAY WEEKEND. AREAS
NEAR THE CASCADE CREST WILL SEE THE BRUNT OF RAIN DURING THE
WEEKEND. THERE IS A FAIR AMOUNT OF UNCERTAINTY FOR MOST AREAS EAST
OF THE CASCADES. CURRENT WEATHER MODELS INDICATE SOME PERIODS OF
RAIN ARE POSSIBLE EAST OF THE CASCADES BUT SPECIFIC TIMINGS
AMOUNTS AND LOCATIONS HAVE BEEN FAIRLY VARIABLE. DAYTIME
TEMPERATURES WILL BE 10 TO 15 DEGREES BELOW NORMAL WITH NIGHTTIME
TEMPERATURES GENERALLY REMAINING NEAR OR SLIGHTLY BELOW SEASONAL
NORMALS UNTIL SUNDAY. SUNDAY NIGHT TEMPERATURES ACROSS THE REGION
MAY BE COLDER AFTER A POSSIBLE COLD FRONT CROSSES THE
REGION. HIGHER MOUNTAIN LOCATIONS COULD START OUT MONDAY MORNING
BELOW FREEZING WITH SNOW LEVELS DROPPING TO BETWEEN 7000 AND 8000
FEET ABOVE MEAN SEA LEVEL. ONLY LIGHT SNOW ACCUMULATIONS WOULD
OCCUR BASED ON CURRENT EXPECTATIONS.
PERSONS PLANNING ON CAMPING IN THE HIGHER TERRAIN OF NORTHEAST
OREGON AND SOUTHEAST WASHINGTON SHOULD BE PREPARED FOR CHANGING
WEATHER CONDITIONS AND THE POTENTIAL FOR FREEZING TEMPERATURES.