805
WWUS46 KSEW 180504
WSWSEW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
904 PM PST WED DEC 17 2025
WAZ301>304-181315-
/O.CON.KSEW.WW.Y.0024.000000T0000Z-251218T1800Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-CASCADES OF SNOHOMISH AND
NORTHERN KING COUNTIES-CASCADES OF SOUTHERN KING COUNTY-CASCADES
OF PIERCE AND LEWIS COUNTIES-
INCLUDING STEVENS PASS, GREENWATER, SR18 AT TIGER MOUNTAIN
SUMMIT, PARADISE, WHITE PASS, MOUNT RAINIER, SNOQUALMIE PASS,
ASHFORD, LONGMIRE, CRYSTAL MOUNTAIN, AND MOUNT BAKER
904 PM PST WED DEC 17 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 5 TO 10
INCHES. WINDS MAY GUST UP TO 35 MPH THIS AFTERNOON.
* WHERE...CASCADES OF SNOHOMISH AND NORTHERN KING COUNTIES, CASCADES
OF WHATCOM AND SKAGIT COUNTIES, CASCADES OF PIERCE AND LEWIS
COUNTIES, AND CASCADES OF SOUTHERN KING COUNTY.
* WHEN...UNTIL 10 AM PST THURSDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. STRONG WINDS COULD CAUSE
TREE DAMAGE.
* ADDITIONAL DETAILS...SNOW LEVELS WILL INCREASE THURSDAY MORNING TO
AROUND 6000 FEET, WHICH COULD BRING A BRIEF PERIOD OF FREEZING
RAIN. CONFIDENCE IS LOW FOR FREEZING RAIN, BUT THE POTENTIAL
EXISTS FOR LIGHT ACCUMULATIONS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
JD
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