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WWUS46 KSEW 082302

WSWSEW



URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE SEATTLE WA

302 PM PST SUN FEB 8 2009



.OVERVIEW...A WEAKENING WARM FRONT WILL CAUSE PRECIPITATION TO

OVERSPREAD WESTERN WASHINGTON EALRY TUESDAY MORNING AND PERSIST

THROUGH THE DAY. WHERE THE AIR REMAINS COLD ENOUGH...

PRECIPITATION WOULD FALL IN THE FORM OF SNOW.



WAZ511>513-517-091230-

/O.NEW.KSEW.WS.A.0003.090210T1400Z-090211T0200Z/

HOOD CANAL AREA-LOWER CHEHALIS VALLEY AREA-OLYMPICS-CENTRAL COAST-

302 PM PST SUN FEB 8 2009



...WINTER STORM WATCH IN EFFECT FROM TUESDAY MORNING THROUGH

TUESDAY AFTERNOON...



THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM

WATCH...WHICH IS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY

AFTERNOON. 



HEAVY SNOW IS POSSIBLE ON TUESDAY OVER PARTS OF WESTERN WASHINGTON

AS A WEAKENING WARM FRONT ARRIVES. ENOUGH COLD AIR SHOULD REMAIN

IN PLACE NEAR HOOD CANAL FOR HEAVY SNOW TO OCCUR THERE AND ALONG

THE SOUTHEAST SLOPES OF THE OLYMPIC MOUNTAINS. A HALF FOOT OR

MORE OF SNOW WILL BE POSSIBLE WITH HIGHER AMOUNTS OVER THE

OLYMPICS.



EASTERLY WINDS AT THE SURFACE COULD FORCE SOME OF THE COLD AIR

NEAR HOOD CANAL OUT THROUGH THE LOWER CHEHALIS VALLEY TO THE

CENTRAL COAST. THIS COULD CAUSE SNOW IN THOSE LOCATIONS AS

WELL...THOUGH THIS IS NOT A CERTAINTY YET. ACCUMULATING SNOW IS

MOST LIKELY NORTH OF HIGHWAY 12...BUT CONFIDENCE IS LOWER UNTIL

THE AMOUNT OF COLD AIR OVER THE INTERIOR IS KNOWN.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT

SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.

CONTINUE TO MONITOR THE LATEST FORECASTS.



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WEATHER.GOV/SEATTLE