Flood Watch for Whatcom and Skagit Counties

THE FLOOD WATCH CONTINUES FOR * PORTIONS OF WESTERN WASHINGTON...INCLUDING THE FOLLOWING  COUNTIES... GRAYS HARBOR...CLALLAM...JEFFERSON...SKAGIT...  WHATCOM...KING...KITSAP...MASON...PIERCE...SNOHOMISH...  THURSTON.

* FROM 4 PM PST THIS AFTERNOON THROUGH LATE FRIDAY NIGHT

PERIODS OF LOCALLY HEAVY RAINFALL ARE EXPECTED TO DEVELOP OVER   THE WATCH AREA THURSDAY AND PERSIST THROUGH FRIDAY NIGHT.
RAINFALL AMOUNTS OF 6 TO 8 INCHES ARE POSSIBLE ON THE NORTH   COAST AND THE OLYMPIC RANGE...WITH 5 TO 7 INCHES POSSIBLE IN THE
NORTH CASCADES. THERE IS THE POTENTIAL FOR LOCALIZED AMOUNTS TO   EXCEED 10 INCHES ON THE SOUTHWEST FACING SLOPES OF THE OLYMPICS.
IN THE LOWLANDS PRECIPITATION AMOUNTS ARE LIKELY TO REACH 1.5 TO 2.5 INCHES OVERNIGHT TONIGHT WITH PERIODS OF MODERATE TO HEAVY
RAIN CONTINUING ON FRIDAY. NEW COMPUTER MODELS ARE SHIFTING HEAVY PRECIPITATION SOUTHWARD FROM EARLIER GUIDANCE AND ARE ALSO SHOWING HEAVY AMOUNTS TONIGHT AND EARLY FRIDAY IN THE LOWLANDS.

URBAN AND SMALL STREAM FLOODING IS POSSIBLE TONIGHT THROUGH FRIDAY DURING PERIODS OF HEAVY RAINFALL IN SNOHOMISH...KING...
KITSAP...PIERCE AND THURSTON COUNTIES. RIVER FLOODING IS POSSIBLE ON RIVERS AND STREAMS FLOWING OFF THE OLYMPIC MOUNTAINS
AND NORTH CASCADES. HOWEVER...THE FLOOD WATCH HAS BEEN EXPANDED SOUTHWARD TO INCLUDE RIVER AND STREAMS FLOWING OFF THE CENTRAL WASHINGTON CASCADES AS NEW COMPUTER MODELS ARE SHIFTING HEAVY PRECIPITATION SOUTHWARD FROM EARLIER GUIDANCE.

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.

KEEP CHECKING BACK FOR UPDATED INFORMATION AND INSTRUCTIONS FROM THE WHATCOM COUNTY SHERIFFS OFFICE DIVISION OF EMERGENCY MANAGEMENT.

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