940
WWUS46 KSEW 100937
WSWSEW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
237 AM PDT TUE MAR 10 2026
WAZ301-302-102200-
/O.CAN.KSEW.WS.W.0002.000000T0000Z-260310T1200Z/
/O.EXT.KSEW.BZ.W.0001.260312T0100Z-260312T1200Z/
/O.EXT.KSEW.WW.Y.0008.260310T1200Z-260312T0100Z/
/O.EXT.KSEW.WS.A.0003.260312T1200Z-260314T1200Z/
CASCADES OF WHATCOM AND SKAGIT COUNTIES-CASCADES OF SNOHOMISH AND
NORTHERN KING COUNTIES-
INCLUDING STEVENS PASS, SILVERTON, AND MOUNT BAKER
237 AM PDT TUE MAR 10 2026
..WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM PDT WEDNESDAY
...BLIZZARD WARNING NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY...
...WINTER STORM WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT...
..WINTER STORM WARNING IS CANCELLED
* WHAT...FOR THE WINTER WEATHER ADVISORY, SNOW EXPECTED. TOTAL SNOW
ACCUMULATIONS BETWEEN 10 AND 20 INCHES. FOR THE BLIZZARD WARNING,
BLIZZARD CONDITIONS EXPECTED PRIMARILY WEDNESDAY EVENING. WINDS
GUSTING AS HIGH AS 45 MPH WITH ADDITIONAL SNOW ACCUMULATIONS OF 8
TO 12 INCHES. TOTAL SNOW ACCUMULATIONS BETWEEN 1 AND 3 FEET
POSSIBLE. FOR THE WINTER STORM WATCH, CONTINUED HEAVY SNOW IS
POSSIBLE LATE WEDNESDAY NIGHT THROUGH LATE FRIDAY NIGHT.
* WHERE...CASCADES OF SNOHOMISH AND NORTHERN KING COUNTIES AND
CASCADES OF WHATCOM AND SKAGIT COUNTIES.
* WHEN...FOR THE WINTER WEATHER ADVISORY, UNTIL 6 PM PDT WEDNESDAY.
FOR THE BLIZZARD WARNING, FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY. FOR THE WINTER STORM WATCH, FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT.
* IMPACTS...SNOW-COVERED ROADS MAY MAKE TRAVEL CONDITIONS DIFFICULT
TO IMPOSSIBLE AT TIMES THROUGH THE MOUNTAINS AND CAUSE DELAYS.
TEMPORARY ROAD CLOSURES POSSIBLE. GUSTY WINDS MAY LIMIT VISIBILITY
AT TIMES AND DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TRAVEL SHOULD BE RESTRICTED TO EMERGENCIES ONLY. IF YOU MUST TRAVEL,
HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED, STAY WITH
YOUR VEHICLE. PREPARE FOR POSSIBLE POWER OUTAGES.
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
WAZ303-304-102200-
/O.EXT.KSEW.BZ.W.0001.260312T0100Z-260312T1200Z/
/O.EXT.KSEW.WW.Y.0008.000000T0000Z-260312T0100Z/
/O.EXT.KSEW.WS.A.0003.260312T1200Z-260314T1200Z/
CASCADES OF SOUTHERN KING COUNTY-CASCADES OF PIERCE AND LEWIS
COUNTIES-
INCLUDING GREENWATER, CRYSTAL MOUNTAIN, WHITE PASS, ASHFORD,
MOUNT RAINIER, SNOQUALMIE PASS, PARADISE, SR18 AT TIGER MOUNTAIN
SUMMIT, AND LONGMIRE
237 AM PDT TUE MAR 10 2026
..WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM PDT WEDNESDAY
...BLIZZARD WARNING NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY...
...WINTER STORM WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT...
* WHAT...FOR THE WINTER WEATHER ADVISORY, SNOW. ADDITIONAL SNOW
ACCUMULATIONS BETWEEN 12 AND 22 INCHES. FOR THE BLIZZARD WARNING,
BLIZZARD CONDITIONS EXPECTED. WINDS GUSTING AS HIGH AS 40 MPH WITH
AN ADDITIONAL 10 TO 15 INCHES OF SNOW. FOR THE WINTER STORM WATCH,
HEAVY SNOW POSSIBLE LATE WEDNESDAY NIGHT THROUGH LATE FRIDAY NIGHT.
* WHERE...CASCADES OF PIERCE AND LEWIS COUNTIES AND CASCADES OF
SOUTHERN KING COUNTY.
* WHEN...FOR THE WINTER WEATHER ADVISORY, UNTIL 6 PM PDT WEDNESDAY.
FOR THE BLIZZARD WARNING, FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY. FOR THE WINTER STORM WATCH, FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. TRAVEL COULD BE VERY DIFFICULT TO IMPOSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TRAVEL SHOULD BE RESTRICTED TO EMERGENCIES ONLY. IF YOU MUST TRAVEL,
HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED, STAY WITH
YOUR VEHICLE. PREPARE FOR POSSIBLE POWER OUTAGES.
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
WAZ328-102200-
/O.EXT.KSEW.BZ.W.0001.260312T0100Z-260312T1200Z/
/O.EXT.KSEW.WS.A.0003.260312T1200Z-260314T1200Z/
OLYMPICS-
INCLUDING MOUNT OLYMPUS AND HURRICANE RIDGE
237 AM PDT TUE MAR 10 2026
...BLIZZARD WARNING NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY...
...WINTER STORM WATCH NOW IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT...
* WHAT...FOR THE BLIZZARD WARNING, BLIZZARD CONDITIONS EXPECTED.
TOTAL SNOW ACCUMULATIONS UP TO 6 INCHES. WINDS GUSTING AS HIGH AS
40 MPH. FOR THE WINTER STORM WATCH, HEAVY SNOW POSSIBLE LATE
WEDNESDAY NIGHT THROUGH LATE FRIDAY NIGHT.
* WHERE...OLYMPICS.
* WHEN...FOR THE BLIZZARD WARNING, FROM 6 PM WEDNESDAY TO 5 AM PDT
THURSDAY. FOR THE WINTER STORM WATCH, FROM LATE WEDNESDAY NIGHT
THROUGH LATE FRIDAY NIGHT.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. TRAVEL COULD BE VERY DIFFICULT TO IMPOSSIBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TRAVEL SHOULD BE RESTRICTED TO EMERGENCIES ONLY. IF YOU MUST TRAVEL,
HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED, STAY WITH
YOUR VEHICLE. PREPARE FOR POSSIBLE POWER OUTAGES.
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
WAZ306-101800-
/O.CON.KSEW.WW.Y.0008.000000T0000Z-260310T1800Z/
FOOTHILLS AND VALLEYS OF SNOHOMISH AND NORTHERN KING COUNTIES-
INCLUDING LAKE ROESIGER, DUVALL, SKYKOMISH, AND MONROE
237 AM PDT TUE MAR 10 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO TWO INCHES.
* WHERE...FOOTHILLS AND VALLEYS OF SNOHOMISH AND NORTHERN KING
COUNTIES.
* WHEN...UNTIL 11 AM PDT THIS MORNING.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY MORNING COMMUTE.
* ADDITIONAL DETAILS...HIGHEST AMOUNTS WILL BE IN THE HIGHEST
ELEVATIONS CLOSEST TO THE MOUNTAINS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
WAZ326-327-101800-
/O.CON.KSEW.WW.Y.0008.000000T0000Z-260310T1800Z/
WESTERN STRAIT OF JUAN DE FUCA-LAKE CRESCENT AREA INCLUDING US
101-
INCLUDING LAKE CRESCENT, SEKIU, JOYCE, AND CLALLAM BAY
237 AM PDT TUE MAR 10 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 2 INCHES.
* WHERE...LAKE CRESCENT AREA INCLUDING US 101 AND WESTERN STRAIT OF
JUAN DE FUCA.
* WHEN...UNTIL 11 AM PDT THIS MORNING.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY MORNING COMMUTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. PREPARE FOR POSSIBLE
POWER OUTAGES.
44
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