Alert archive / Washington / Winter Storm Warnings in 2021

Winter Storm Warning 10, NWS Seattle, WA

February 21, 2021

NWS Seattle, WA issued this winter storm warning at Feb 21, 2021, 3:48 PM PST. It took effect at Feb 22, 2021, 4:00 PM PST. It was in force for 34 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 21, 2021, 3:48 PM PST (23:48 UTC)
In effect from
Feb 22, 2021, 4:00 PM PST
Expired
Feb 24, 2021, 2:00 AM PST
In force
34 hr
Issued by
NWS Seattle, WA

The text

As transmitted.

178 
WWUS46 KSEW 212348
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
348 PM PST Sun Feb 21 2021

WAZ567>569-220800-
/O.UPG.KSEW.WS.A.0004.210223T0000Z-210224T0600Z/
/O.NEW.KSEW.WS.W.0010.210223T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
348 PM PST Sun Feb 21 2021

...WINTER STORM WARNING IN EFFECT FROM 4 PM MONDAY TO 10 PM PST
TUESDAY ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 12 to 24 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit
  Counties, including Mount Baker Ski Area, Cascade mountains and
  valleys of Snohomish and King Counties, including Stevens Pass
  and Snoqualmie Pass, and Cascade mountains and valleys of Pierce
  and Lewis Counties, including the Crystal Mountain Ski Area, as
  well as Paradise on Mount Rainier.

* WHEN...From 4 PM Monday to 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
11 follow-up statements
634 
WWUS46 KSEW 220527
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
927 PM PST Sun Feb 21 2021

WAZ567>569-221330-
/O.CON.KSEW.WS.W.0010.210223T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
927 PM PST Sun Feb 21 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO
10 PM PST TUESDAY ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow 
  accumulations of 12 to 24 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Mount Baker Ski Area, Cascade mountains 
  and valleys of Snohomish and King Counties, including Stevens 
  Pass and Snoqualmie Pass, and Cascade mountains and valleys of 
  Pierce and Lewis Counties, including the Crystal Mountain Ski 
  Area, as well as Paradise on Mount Rainier.

* WHEN...From 4 PM Monday to 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
637 
WWUS46 KSEW 221213
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
413 AM PST Mon Feb 22 2021

WAZ567>569-230000-
/O.CON.KSEW.WS.W.0010.210223T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
413 AM PST Mon Feb 22 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM PST TUESDAY ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 12 to 24 inches. Accumulations at the passes of 
  18 to 24 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Mount Baker Ski Area, Cascade mountains 
  and valleys of Snohomish and King Counties, including Stevens 
  Pass and Snoqualmie Pass, and Cascade mountains and valleys of 
  Pierce and Lewis Counties, including the Crystal Mountain Ski 
  Area, as well as Paradise on Mount Rainier.

* WHEN...From 4 PM Monday to 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...A period of very heavy snowfall rates is
  expected at Stevens and Snoqualmie Passes Monday evening and
  night. Rates of 1 to 2"/hr will be common, with rates of 2"+/hr
  possible at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ513-230000-
/O.NEW.KSEW.WW.Y.0017.210223T0000Z-210224T0000Z/
Olympics-
including Hurricane Ridge
413 AM PST Mon Feb 22 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 PM PST TUESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations
  of 6 to 10 inches.

* WHERE...Olympic mountains and valleys, including Hurricane 
  Ridge, Amanda Park, and Quinault.

* WHEN...From 4 PM this afternoon to 4 PM PST Tuesday.

* IMPACTS...Plan on difficult travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
397 
WWUS46 KSEW 222300
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
300 PM PST Mon Feb 22 2021

WAZ567>569-230700-
/O.CON.KSEW.WS.W.0010.210223T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
300 PM PST Mon Feb 22 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY
ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 12 to 25 inches. Accumulations at the passes
  expected to be 18 to 25 inches. 

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Mount Baker Ski Area, Cascade mountains 
  and valleys of Snohomish and King Counties, including Stevens 
  Pass and Snoqualmie Pass, and Cascade mountains and valleys of 
  Pierce and Lewis Counties, including the Crystal Mountain Ski 
  Area, as well as Paradise on Mount Rainier.

* WHEN...Until 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Snow fall rates of 1 to 2 inches per hour
  is expected. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ513-230700-
/O.CON.KSEW.WW.Y.0017.210223T0000Z-210224T0000Z/
Olympics-
including Hurricane Ridge
300 PM PST Mon Feb 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations 
  of up to 11 inches.

* WHERE...Olympic mountains and valleys, including Hurricane 
  Ridge, Amanda Park, and Quinault.

* WHEN...Until 4 PM PST Tuesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
385 
WWUS46 KSEW 230543
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
943 PM PST Mon Feb 22 2021

WAZ567>569-231400-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
943 PM PST Mon Feb 22 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY
ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 12 to 25 inches. Total accumulations at the 
  passes expected to be 18 to 25 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Mount Baker Ski Area, Cascade mountains 
  and valleys of Snohomish and King Counties, including Stevens 
  Pass and Snoqualmie Pass, and Cascade mountains and valleys of 
  Pierce and Lewis Counties, including the Crystal Mountain Ski 
  Area, as well as Paradise on Mount Rainier.

* WHEN...Until 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Periods of very heavy snowfall rates are
  expected at Stevens and Snoqualmie Passes in the convergence
  zone. Rates of 1 to 2"/hr will be common, with rates of 2"+/hr 
  possible at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ513-231400-
/O.CON.KSEW.WW.Y.0017.000000T0000Z-210224T0000Z/
Olympics-
including Hurricane Ridge
943 PM PST Mon Feb 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY ABOVE 2000 FEET...

* WHAT...Snow expected above 2000 feet. Total snow accumulations
  of 6 to 10 inches.

* WHERE...Olympic mountains and valleys, including Hurricane 
  Ridge, Amanda Park, and Quinault.

* WHEN...Until 4 PM PST Tuesday.

* IMPACTS...Plan on difficult travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
828 
WWUS46 KSEW 231240
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
440 AM PST Tue Feb 23 2021

WAZ567>569-240000-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
440 AM PST Tue Feb 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING ABOVE 2000 FEET...

* WHAT...Heavy snow expected above 2000 feet. Total snow
  accumulations of 12 to 24 inches. Total accumulations at the
  passes expected to be 18 to 24 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Mount Baker Ski Area, Cascade mountains 
  and valleys of Snohomish and King Counties, including Stevens 
  Pass and Snoqualmie Pass, and Cascade mountains and valleys of 
  Pierce and Lewis Counties, including the Crystal Mountain Ski 
  Area, as well as Paradise on Mount Rainier.

* WHEN...Until 10 PM PST Tuesday.

* IMPACTS...Travel could be very difficult.

* ADDITIONAL DETAILS...Periods of very heavy snowfall rates are
  expected at Stevens and Snoqualmie Passes in any snow bands that
  set up. Rates of 1 to 2"/hr will be possible in the heaviest 
  bands.
  
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ513-240000-
/O.CON.KSEW.WW.Y.0017.000000T0000Z-210224T0000Z/
Olympics-
including Hurricane Ridge
440 AM PST Tue Feb 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON ABOVE 2000 FEET...

* WHAT...Snow showers expected above 2000 feet. Total snow 
  accumulations of 6 to 10 inches.

* WHERE...Olympic mountains and valleys, including Hurricane 
  Ridge, Amanda Park, and Quinault.

* WHEN...Until 4 PM PST Tuesday.

* IMPACTS...Plan on difficult travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
873 
WWUS46 KSEW 232335
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
335 PM PST Tue Feb 23 2021

WAZ513-240045-
/O.EXP.KSEW.WW.Y.0017.000000T0000Z-210224T0000Z/
Olympics-
including Hurricane Ridge
335 PM PST Tue Feb 23 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 PM PST THIS AFTERNOON
ABOVE 2000 FEET...

$$

WAZ567>569-240600-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Newhalem, Stevens Pass, Snoqualmie Pass, Paradise, 
and Longmire
335 PM PST Tue Feb 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING ABOVE 2000 FEET...

* WHAT...Heavy snow continued above 2000 feet. Additional snow 
  accumulations of 1 to 6 inches.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit 
  Counties, including Maple Falls, the Mount Baker Ski Area, 
  Newhalem, Lyman, and Concrete, Cascade mountains and valleys 
  of Pierce and Lewis Counties, including the Crystal Mountain 
  Ski Area, Paradise on Mount Rainier, Ashford, Randle, and 
  Packwood and Cascade mountains and valleys of Snohomish and 
  King Counties, including Darrington, Index, Skykomish, Stevens 
  Pass, and Snoqualmie Pass.

* WHEN...Until 10 PM PST this evening.

* IMPACTS...Plan on slippery road conditions.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
253 
WWUS46 KSEW 240521
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
921 PM PST Tue Feb 23 2021

WAZ568-569-241000-
/O.EXT.KSEW.WS.W.0010.000000T0000Z-210224T1000Z/
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Stevens Pass, Snoqualmie Pass, Paradise, and Longmire
921 PM PST Tue Feb 23 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 2 AM PST WEDNESDAY
ABOVE 2000 FEET...

* WHAT...Accumulating snow continues above 2000 feet. Additional
  snow accumulations of one to three inches under the convergence
  zone..

* WHERE...Cascade mountains and valleys of Pierce and Lewis
  Counties, including the Crystal Mountain Ski Area, Paradise on
  Mount Rainier and Cascade mountains and valleys of Snohomish and
  King Counties, including Stevens Pass and Snoqualmie Pass.

* WHEN...Until 2 AM PST Wednesday.

* IMPACTS...Plan on winter travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ567-240630-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
including Concrete, Hamilton, Lyman, Maple Falls, Deming, 
and Newhalem
921 PM PST Tue Feb 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING ABOVE 2000 FEET...

* WHAT...Snow continued above 2000 feet. Additional snow 
  accumulations of up to one inch.

* WHERE...Cascade mountains and valleys of Whatcom and Skagit
  Counties, including the Mount Baker Ski Area.

* WHEN...Until 10 PM PST this evening.

* IMPACTS...Plan on winter travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
998 
WWUS46 KSEW 240609
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
1009 PM PST Tue Feb 23 2021

WAZ567-240715-
/O.EXP.KSEW.WS.W.0010.000000T0000Z-210224T0600Z/
Cascades of Whatcom and Skagit Counties-
1009 PM PST Tue Feb 23 2021

...WINTER STORM WARNING HAS EXPIRED...

Snow has ended in these areas.

$$

WAZ568-569-241000-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T1000Z/
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Stevens Pass, Snoqualmie Pass, Paradise, and Longmire
1009 PM PST Tue Feb 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM PST
WEDNESDAY ABOVE 2000 FEET...

* WHAT...Accumulating snow continues above 2000 feet. Additional 
  snow accumulations of one to three inches under the 
  convergence zone.

* WHERE...Cascade mountains and valleys of Pierce and Lewis 
  Counties, including the Crystal Mountain Ski Area, Paradise on 
  Mount Rainier and Cascade mountains and valleys of Snohomish 
  and King Counties, including Stevens Pass and Snoqualmie Pass.

* WHEN...Until 2 AM PST Wednesday.

* IMPACTS...Plan on winter travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ555-240900-
/O.NEW.KSEW.WW.Y.0018.210224T0609Z-210224T0900Z/
East Puget Sound Lowlands-
including Bonney Lake, Maple Valley, Monroe, Woodinville, 
Arlington, Granite Falls, Lake Stevens, Snohomish, Gold Bar, 
Duvall, Carnation, Fall City, Snoqualmie, North Bend, Covington, 
Black Diamond, Orting, and Eatonville
1009 PM PST Tue Feb 23 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 AM PST WEDNESDAY
ABOVE 2000 FEET...

* WHAT...Snow continues below 2000 feet. Snow accumulations of 1
  to 3 inches possible as low as 500 feet as the convergence zone
  continues to affect southern King and Pierce Counties.

* WHERE...East Puget Sound Lowlands from Snohomish County to 
  Pierce County, including Arlington, Gold Bar, Duvall, 
  Snoqualmie, Buckley, Enumclaw, and Eatonville.

* WHEN...Until 1 AM PST Wednesday.

* IMPACTS...Plan on winter travel conditions.

* ADDITIONAL DETAILS...Convergence zone will taper in the next 2
  to 3 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
314 
WWUS46 KSEW 240617 
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
1017 PM PST Tue Feb 23 2021

WAZ568-569-241000-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T1000Z/
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Stevens Pass, Snoqualmie Pass, Paradise, and Longmire
1017 PM PST Tue Feb 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM PST
WEDNESDAY ABOVE 2000 FEET...

* WHAT...Accumulating snow continues above 2000 feet. Additional 
  snow accumulations of one to three inches under the 
  convergence zone.

* WHERE...Cascade mountains and valleys of Pierce and Lewis 
  Counties, including the Crystal Mountain Ski Area, Paradise on 
  Mount Rainier and Cascade mountains and valleys of Snohomish 
  and King Counties, including Stevens Pass and Snoqualmie Pass.

* WHEN...Until 2 AM PST Wednesday.

* IMPACTS...Plan on winter travel conditions.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

WAZ555-240900-
/O.CON.KSEW.WW.Y.0018.000000T0000Z-210224T0900Z/
East Puget Sound Lowlands-
including Bonney Lake, Maple Valley, Monroe, Woodinville, 
Arlington, Granite Falls, Lake Stevens, Snohomish, Gold Bar, 
Duvall, Carnation, Fall City, Snoqualmie, North Bend, Covington, 
Black Diamond, Orting, and Eatonville
1017 PM PST Tue Feb 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM PST
WEDNESDAY...

* WHAT...Snow continues below 2000 feet. Snow accumulations of 1 
  to 3 inches possible as low as 500 feet as the convergence 
  zone continues to affect southern King and Pierce Counties.

* WHERE...East Puget Sound Lowlands from Snohomish County to 
  Pierce County, including Arlington, Gold Bar, Duvall, 
  Snoqualmie, Buckley, Enumclaw, and Eatonville.

* WHEN...Until 1 AM PST Wednesday.

* IMPACTS...Plan on winter travel conditions.

* ADDITIONAL DETAILS...Convergence zone will taper in the next 2 
  to 3 hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
427 
WWUS46 KSEW 240852
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
1252 AM PST Wed Feb 24 2021

WAZ555-241000-
/O.EXP.KSEW.WW.Y.0018.000000T0000Z-210224T0900Z/
East Puget Sound Lowlands-
including Bonney Lake, Maple Valley, Monroe, Woodinville, 
Arlington, Granite Falls, Lake Stevens, Snohomish, Gold Bar, 
Duvall, Carnation, Fall City, Snoqualmie, North Bend, Covington, 
Black Diamond, Orting, and Eatonville
1252 AM PST Wed Feb 24 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 1 AM PST EARLY THIS
MORNING...

Showers have started to taper and will continue to taper 
overnight. Little to no additional accumulations expected. 

$$

WAZ568-569-241000-
/O.CON.KSEW.WS.W.0010.000000T0000Z-210224T1000Z/
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Stevens Pass, Snoqualmie Pass, Paradise, and Longmire
1252 AM PST Wed Feb 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM PST EARLY
THIS MORNING ABOVE 2000 FEET...

* WHAT...Heavy snow continued above 2000 feet. Additional snow 
  accumulations of up to one inch.

* WHERE...Cascade mountains and valleys of Pierce and Lewis 
  Counties, including the Crystal Mountain Ski Area, Paradise on 
  Mount Rainier, Ashford, Randle, and Packwood and Cascade 
  mountains and valleys of Snohomish and King Counties, 
  including Darrington, Index, Skykomish, Stevens Pass, and 
  Snoqualmie Pass.

* WHEN...Until 2 AM PST early this morning.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

For the latest road conditions in Washington state, call 5 1 1.

&&

$$

www.weather.gov/seattle
049 
WWUS46 KSEW 240941
WSWSEW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Seattle WA
141 AM PST Wed Feb 24 2021

WAZ568-569-241045-
/O.EXP.KSEW.WS.W.0010.000000T0000Z-210224T1000Z/
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
including Stevens Pass, Snoqualmie Pass, Paradise, and Longmire
141 AM PST Wed Feb 24 2021

...WINTER STORM WARNING WILL EXPIRE AT 2 AM PST EARLY THIS
MORNING ABOVE 2000 FEET...

Snow showers have diminished across the Cascades this morning. The
Winter Storm Warning will be good to expire at 2am this morning.

$$

www.weather.gov/seattle

The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 20, 8:07 PM PSTGale WarningSEW32 hr
Feb 21, 3:00 PM PSTSmall Craft AdvisorySEW14 hr

Nearby

Winter Storm Warnings in Washington, 2021Every winter storm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.