500 AM PDT WED MAR 30 2011
...FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH FRIDAY AFTERNOON...
THE FLOOD WATCH CONTINUES FOR
* PORTIONS OF WESTERN WASHINGTON...INCLUDING THE FOLLOWING COUNTIES...CLALLAM...JEFFERSON...SKAGIT...WHATCOM...KING.. LEWIS...MASON...PIERCE...SNOHOMISH...THURSTON...
* FROM THIS AFTERNOON THROUGH FRIDAY AFTERNOON
* A WARM FRONTAL SYSTEM AS ALREADY MOVED INTO WESTERN WASHINGTON THIS MORNING. THE FRONTAL BAND IS EXPECTED TO STALL OVER THE AREA FOR A 24 TO 36 HOUR PERIOD PRODUCING HEAVY PRECIPITATION ALONG THE COAST AND MOUNTAINS. FREEZING LEVELS...WHICH WERE NEAR 4000 FEET LATE TUESDAY AFTERNOON...HAVE RISEN UP TO NEAR 9000 FEET EARLY THIS MORNING.
* THE RIVERS UNDER THE GREATEST THREAT OF FLOODING ARE THE ONES THAT FLOW OUT OF THE CENTRAL CASCADES. THESE INCLUDE...BUT ARE NOT LIMITED TO...THE SNOQUALMIE.. SNOHOMISH...AND STILLAGUAMISH. FLOODING COULD START AS EARLY AS LATE THIS AFTERNOON ON THE UPPER REACHES OF THE SNOQUALMIE. THERE IS A CHANCE THE SNOHOMISH RIVER WILL REACH MAJOR FLOOD. THE SKOKOMISH RIVER IN MASON COUNTY WILL ALSO LIKELY FLOOD...POSSIBLY AS EARLY AS LATE TONIGHT.
RAINFALL TOTALS FOR THE EVENT ARE PREDICTED TO BE IN THE 4 TO 7 INCH RANGE IN THE CENTRAL CASCADES AND UP TO 5 INCHES IN THE OLYMPICS. OVER THE NORTHERN AND SOUTHERN CASCADES SOUTH OF MOUNT RAINIER STORM TOTALS ARE EXPECTED TO BE MOSTLY IN THE 2 TO 4 INCH RANGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS..
A FLOOD WATCH MEANS CONDITIONS ARE FAVORABLE FOR FLOODING BUT FLOODING IS NOT IMMINENT OR OCCURRING. MONITOR THE LATEST FORECASTS FROM THE NATIONAL WEATHER SERVICE AND BE READY TO ACT QUICKLY IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. |
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