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WWUS46 KSEW 152155
WSWSEW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
155 PM PST MON DEC 15 2025
WAZ301-302-161200-
/O.UPG.KSEW.WS.A.0003.251217T0600Z-251218T0600Z/
/O.NEW.KSEW.WS.W.0009.251217T0000Z-251218T0600Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-CASCADES OF SNOHOMISH AND
NORTHERN KING COUNTIES-
INCLUDING STEVENS PASS AND MOUNT BAKER
155 PM PST MON DEC 15 2025
...WINTER STORM WARNING IN EFFECT FROM 4 PM TUESDAY TO 10 PM PST
WEDNESDAY...
* WHAT...HEAVY SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 10 TO 18
INCHES AT STEVENS PASS. HIGHER AMOUNTS OF SNOW ARE LIKELY NORTH OF
STEVENS PASS ON HIGHER PEAKS. WINDS IN THE PASSES GUSTING AS HIGH
AS 35 MPH.
* WHERE...CASCADES OF SNOHOMISH AND NORTHERN KING COUNTIES AND
CASCADES OF WHATCOM AND SKAGIT COUNTIES.
* WHEN...FROM 4 PM TUESDAY TO 10 PM PST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. PERIODS OF WINDY
CONDITIONS WITH SNOW COULD LIMIT VISIBILITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. PREPARE FOR POSSIBLE POWER
OUTAGES.
WAZ303-304-328-161200-
/O.UPG.KSEW.WS.A.0003.251217T0600Z-251218T0600Z/
/O.NEW.KSEW.WW.Y.0023.251217T0000Z-251218T0600Z/
CASCADES OF SOUTHERN KING COUNTY-CASCADES OF PIERCE AND LEWIS
COUNTIES-OLYMPICS-
INCLUDING GREENWATER, ASHFORD, SNOQUALMIE PASS, HURRICANE RIDGE,
CRYSTAL MOUNTAIN, SR18 AT TIGER MOUNTAIN SUMMIT, MOUNT RAINIER,
PARADISE, LONGMIRE, AND WHITE PASS
155 PM PST MON DEC 15 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM TUESDAY TO 10 PM PST
WEDNESDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 6 TO 10
INCHES, INCLUDING SNOQUALMIE PASS, WHITE PASS. WINDS IN THE PASSES
GUSTING AS HIGH AS 35 MPH.
* WHERE...OLYMPICS, CASCADES OF PIERCE AND LEWIS COUNTIES, AND
CASCADES OF SOUTHERN KING COUNTY.
* WHEN...FROM 4 PM TUESDAY TO 10 PM PST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. PERIODS OF WINDY
CONDITIONS WITH SNOW COULD LIMIT VISIBILITY AT TIMES OVER WHITE
PASS. GUSTY WINDS COULD BRING DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
HPR
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