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NWS issues Flood Watch for Thurston County –
Heavy rain in the forecast for today and tonight!

– Flood Watch for Thurston County, Washington
Issuing Office: Seattle/Tacoma
Source: National.Weather.Service

3:59am PST, Tue Nov 21

… FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH THURSDAY AFTERNOON… THE FLOOD WATCH CONTINUES FOR … WEST CENTRAL WASHINGTON, KING, LEWIS, PIERCE, SNOHOMISH, AND THURSTON.

* FROM THIS AFTERNOON THROUGH THURSDAY AFTERNOON *

A WARM FRONT AND THE PLUME OF SUBTROPICAL MOISTURE WITH IT WILL BRING 2 TO 5.5 INCHES OF RAIN TO THE OLYMPICS AND MOUNT RAINIER TODAY AND TONIGHT, AND 1 TO 4 INCHES OF RAIN TO THE CASCADES NORTH OF MOUNT RAINIER. THE SNOW LEVEL WILL BE NEAR 8000 FEET.

A SECOND FRONTAL SYSTEM WILL BRING ANOTHER 1 TO 4 INCHES ON WEDNESDAY NIGHT AND THURSDAY, WITH THE SNOW LEVEL FALLING FROM 7000 FEET TO 4000 FEET AS THE SYSTEM MOVES THROUGH.

* THE TWO SYSTEMS IN CLOSE SUCCESSION PRESENTS A THREAT OF FLOODING ON RIVERS IN WESTERN WASHINGTON. FLOODING COULD BEGIN TONIGHT OR WEDNESDAY. IT LOOKS LIKE THE THREAT IS FOR A RELATIVELY MINOR FLOODING EPISODE.

* MODELS SHOW SEVERAL RIVERS CRESTING NEAR OR JUST ABOVE FLOOD STAGE INCLUDING THE SKOKOMISH, COWLITZ, NISQUALLY, WHITE, SNOQUALMIE, STILLAGUAMISH, SKAGIT, AND NOOKSACK. HOWEVER, THIS DOESN’T MEAN THAT THE POSSIBILITY OF FLOODING IS LIMITED TO THESE RIVERS. PRECAUTIONARY/PREPAREDNESS ACTIONS… A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
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Posted by Steve on November 21, 2017 at 6:04 am | Permalink

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