Alert archive / Washington / Winter Storm Warnings in 2021
Winter Storm Warning 12, NWS Seattle, WA
NWS Seattle, WA issued this winter storm warning at Mar 27, 2021, 12:00 PM PDT. It took effect at Mar 28, 2021, 5:00 AM PDT. It was in force for 24 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
- Mar 27, 2021, 12:00 PM PDT (19:00 UTC)
- In effect from
- Mar 28, 2021, 5:00 AM PDT
- Expired
- Mar 29, 2021, 5:00 AM PDT
- In force
- 24 hr
- Issued by
- NWS Seattle, WA
The text
As transmitted.
271 WWUS46 KSEW 271900 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1200 PM PDT Sat Mar 27 2021 WAZ567-281200- /O.UPG.KSEW.WS.A.0006.210328T0900Z-210329T1200Z/ /O.NEW.KSEW.WS.W.0012.210328T1200Z-210329T1200Z/ Cascades of Whatcom and Skagit Counties- 1200 PM PDT Sat Mar 27 2021 ...WINTER STORM WARNING IN EFFECT FROM 5 AM SUNDAY TO 5 AM PDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet. Winds gusting as high as 45 mph. * WHERE...Cascade mountains of Whatcom and Skagit Counties, including the Mount Baker Ski Area. * WHEN...From 5 AM Sunday to 5 AM PDT Monday. * IMPACTS...Travel could be very difficult. Gusty winds and heavy snow could bring down tree branches. 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. && $$ WAZ568-569-281200- /O.EXT.KSEW.WW.Y.0024.210328T1500Z-210329T1200Z/ Cascades of Snohomish and King Counties- Cascades of Pierce and Lewis Counties- including Stevens Pass, Snoqualmie Pass, and Paradise 1200 PM PDT Sat Mar 27 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 AM SUNDAY TO 5 AM PDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 8 to 22 inches. Winds gusting as high as 45 mph. * WHERE...Cascade mountains of Snohomish, King, Pierce, and Lewis Counties, including Stevens Pass, Snoqualmie Pass, the Crystal Mountain Ski Area and Paradise on Mount Rainier. * WHEN...From 8 AM Sunday to 5 AM PDT Monday. * IMPACTS...Travel could be difficult. Gusty winds and heavy snow could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions in Washington state, call 5 1 1. && $$ www.weather.gov/seattle
4 follow-up statements
102 WWUS46 KSEW 281038 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 338 AM PDT Sun Mar 28 2021 WAZ568-281845- /O.UPG.KSEW.WW.Y.0024.210328T1500Z-210329T1200Z/ /O.EXB.KSEW.WS.W.0012.210328T1500Z-210329T1200Z/ Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 338 AM PDT Sun Mar 28 2021 ...WINTER STORM WARNING IN EFFECT FROM 8 AM THIS MORNING TO 5 AM PDT MONDAY ABOVE 3000 FEET... * WHAT...Heavy snow expected above 3000 feet. Total snow accumulations of 5 to 28 inches. * WHERE...Cascade mountains and valleys of Snohomish and King Counties, including Darrington, Index, Skykomish, Stevens Pass, and Snoqualmie Pass. * WHEN...From 8 AM this morning to 5 AM PDT Monday. * IMPACTS...Travel could be very difficult to impossible. 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. && $$ WAZ567-281845- /O.CON.KSEW.WS.W.0012.210328T1200Z-210329T1200Z/ Cascades of Whatcom and Skagit Counties- 338 AM PDT Sun Mar 28 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of up to 23 inches. Winds gusting as high as 40 mph. * WHERE...Cascade mountains and valleys of Whatcom and Skagit Counties, including Maple Falls, the Mount Baker Ski Area, Newhalem, Lyman, and Concrete. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions in Washington state, call 5 1 1. && $$ WAZ569-281845- /O.CON.KSEW.WW.Y.0024.210328T1500Z-210329T1200Z/ Cascades of Pierce and Lewis Counties- including Paradise 338 AM PDT Sun Mar 28 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 5 AM PDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 17 inches. Winds gusting as high as 40 mph. * WHERE...Cascade mountains and valleys of Pierce and Lewis Counties, including the Crystal Mountain Ski Area, Paradise on Mount Rainier, Ashford, Randle, and Packwood. * WHEN...From 8 AM this morning to 5 AM PDT Monday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions in Washington state, call 5 1 1. && $$ www.weather.gov/seattle
416 WWUS46 KSEW 281431 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 731 AM PDT Sun Mar 28 2021 WAZ567-290100- /O.CON.KSEW.WS.W.0012.000000T0000Z-210329T1200Z/ Cascades of Whatcom and Skagit Counties- 731 AM PDT Sun Mar 28 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY... * WHAT...Heavy snow expected above 3000 feet. Total snow accumulations of 1 to 2 feet. Winds gusting as high as 40 mph. * WHERE...Cascade mountains of Whatcom and Skagit Counties, including the Mount Baker Ski Area. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. Gusty winds and heavy snow could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions in Washington state, call 5 1 1. && $$ WAZ568-290100- /O.CON.KSEW.WS.W.0012.210328T1500Z-210329T1200Z/ Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 731 AM PDT Sun Mar 28 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY ABOVE 3000 FEET... * WHAT...Heavy snow expected above 3000 feet. Total snow accumulations of 8 to 28 inches, heaviest from Stevens Pass northward. Winds gusting as high as 40 mph. * WHERE...Cascade mountains of Snohomish and King Counties, including Stevens Pass and Snoqualmie Pass. * WHEN...From 8 AM this morning to 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. Gusty winds and heavy snow could bring down tree branches. 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. && $$ WAZ569-290100- /O.CON.KSEW.WW.Y.0024.210328T1500Z-210329T1200Z/ Cascades of Pierce and Lewis Counties- including Paradise 731 AM PDT Sun Mar 28 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY... * WHAT...Snow expected above 3000 feet. Total snow accumulations of 6 to 18 inches. Winds gusting as high as 40 mph. * WHERE...Cascade mountains of Pierce and Lewis Counties, including the Crystal Mountain Ski Area and Paradise on Mount Rainier. * WHEN...From 8 AM this morning to 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions in Washington state, call 5 1 1. && $$ www.weather.gov/seattle
656 WWUS46 KSEW 282311 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 411 PM PDT Sun Mar 28 2021 WAZ567-291200- /O.CON.KSEW.WS.W.0012.000000T0000Z-210329T1200Z/ Cascades of Whatcom and Skagit Counties- 411 PM PDT Sun Mar 28 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY... * WHAT...Heavy snow continued. Additional snow accumulations of up to 9 inches. * WHERE...Cascade mountains of Whatcom and Skagit Counties, including the Mount Baker Ski Area. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. 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. && $$ WAZ568-291200- /O.CON.KSEW.WS.W.0012.000000T0000Z-210329T1200Z/ Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 411 PM PDT Sun Mar 28 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY ABOVE 3000 FEET... * WHAT...Heavy snow continued above 3000 feet. Additional snow accumulations of 5 to 16 inches. * WHERE...Cascade mountains of Snohomish and King Counties, including Stevens Pass and Snoqualmie Pass. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions in Washington state, call 5 1 1. && $$ WAZ569-291200- /O.CON.KSEW.WW.Y.0024.000000T0000Z-210329T1200Z/ Cascades of Pierce and Lewis Counties- including Paradise 411 PM PDT Sun Mar 28 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT MONDAY... * WHAT...Snow continued. Additional snow accumulations of 1 to 10 inches. * WHERE...Cascade mountains of Pierce and Lewis Counties, including the Crystal Mountain Ski Area and Paradise on Mount Rainier. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Travel could be difficult with delays possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For the latest road conditions in Washington state, call 5 1 1. && $$ www.weather.gov/seattle
822 WWUS46 KSEW 291144 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 444 AM PDT Mon Mar 29 2021 WAZ567-291245- /O.EXP.KSEW.WS.W.0012.000000T0000Z-210329T1200Z/ Cascades of Whatcom and Skagit Counties- 444 AM PDT Mon Mar 29 2021 ...WINTER STORM WARNING WILL EXPIRE AT 5 AM PDT EARLY THIS MORNING... Convergence zone activity is tapering and little to no additional accumulation is expected this morning. $$ WAZ568-291245- /O.EXP.KSEW.WS.W.0012.000000T0000Z-210329T1200Z/ Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 444 AM PDT Mon Mar 29 2021 ...WINTER STORM WARNING WILL EXPIRE AT 5 AM PDT EARLY THIS MORNING ABOVE 3000 FEET... Convergence zone activity is tapering and additional accumulation at Pass level will be minimal through the rest of the morning. $$ WAZ569-291245- /O.EXP.KSEW.WW.Y.0024.000000T0000Z-210329T1200Z/ Cascades of Pierce and Lewis Counties- including Paradise 444 AM PDT Mon Mar 29 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM PDT EARLY THIS MORNING... No additional significant snowfall is expected this morning. $$ www.weather.gov/seattle
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 2:24 PM PDT | Gale Warning | SEW | 60 hr | |
| Mar 27, 2:24 PM PDT | Small Craft Advisory | SEW | 72 hr | |
| Mar 27, 2:32 PM PDT | Wind Advisory | SEW | San Juan | 36 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.