HAZARDOUS WEATHER OUTLOOK
Issue Date: 444 AM PST SAT DEC 26 2009
Expiration: 445 AM PST SUN DEC 27 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
AIR STAGNATION ADVISORY IN EFFECT THROUGH THIS AFTERNOON FOR
NORTHERN CLARK COUNTY...COWLITZ VALLEY...CENTRAL AND SOUTH
WILLAMETTE VALLEY. A STRONG PERSISTENT SURFACE BASED TEMPERATURE
INVERSION HAS RESULTED IN LIMITED MIXING OF THE NEAR SURFACE AIR.
THIS WILL RESULT IN SLOWLY DEGRADING AIR QUALITY.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
THERE IS A SLIGHT CHANCE FOR FREEZING RAIN SUNDAY MORNING FOR THE
WILLAMETTE VALLEY...LOWER COLUMBIA...AND COLUMBIA RIVER GORGE AS
A WEAK FRONT SWINGS FROM SOUTH TO NORTH ACROSS THE AREA ON SUNDAY.
PORTIONS OF THE COLUMBIA RIVER GORGE WEST OF CASCADE LOCKS MAY
EXPERIENCE LOCAL FREEZING RAIN INTO THE AFTERNOON. ANY FREEZING
RAIN WILL BE SPOTTY AND MELT AWAY LATER IN THE DAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED.
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