Alert archive / Washington / Winter Storm Warnings in 2021
Winter Storm Warning 4, NWS Seattle, WA
NWS Seattle, WA issued this winter storm warning at Jan 11, 2021, 8:19 AM PST. It took effect at Jan 11, 2021, 1:00 PM PST. It was in force for 21 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
- Jan 11, 2021, 8:19 AM PST (16:19 UTC)
- In effect from
- Jan 11, 2021, 1:00 PM PST
- Expired
- Jan 12, 2021, 10:01 AM PST
- In force
- 21 hr
- Issued by
- NWS Seattle, WA
The text
As transmitted.
376 WWUS46 KSEW 111619 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 819 AM PST Mon Jan 11 2021 WAZ567-568-120000- /O.UPG.KSEW.WW.Y.0003.210111T2100Z-210113T0000Z/ /O.NEW.KSEW.WS.W.0004.210111T2100Z-210113T0000Z/ Cascades of Whatcom and Skagit Counties- Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 819 AM PST Mon Jan 11 2021 ...WINTER STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 PM PST TUESDAY ABOVE 3000 FEET... * WHAT...Heavy wet snow expected above 3000 feet. Total snow accumulations of 12 to 24 inches, heaviest at Stevens Pass and Mount Baker. Snoqualmie Pass will see a rain and snow mix with snowfall totals of 3 to 6 inches. * WHERE...Cascade mountains and valleys of Whatcom and Skagit Counties, including the Mount Baker Ski Area. Cascade mountains and valleys of Snohomish and King Counties, including Stevens Pass, and Snoqualmie Pass. * WHEN...From 1 PM this afternoon to 4 PM PST Tuesday. * 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. && $$ www.weather.gov/seattle
3 follow-up statements
264 WWUS46 KSEW 112241 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 241 PM PST Mon Jan 11 2021 WAZ567-568-121200- /O.CON.KSEW.WS.W.0004.000000T0000Z-210113T0000Z/ Cascades of Whatcom and Skagit Counties- Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 241 PM PST Mon Jan 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY ABOVE 3000 FEET... * WHAT...Heavy wet snow expected above 3000 feet. Total snow accumulations of 12 to 24 inches, heaviest at Stevens Pass and Mount Baker. Snoqualmie Pass will see a rain and snow mix with snowfall totals of 3 to 6 inches. * WHERE...Cascade mountains and valleys of Whatcom and Skagit Counties, including the Mount Baker Ski Area. Cascade mountains and valleys of Snohomish and King Counties, including Stevens Pass, and Snoqualmie Pass. * WHEN...Until 4 PM PST Tuesday. * IMPACTS...Travel could be very difficult to impossible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest road conditions in Washington state, call 5 1 1. && $$ www.weather.gov/seattle
351 WWUS46 KSEW 120951 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 151 AM PST Tue Jan 12 2021 WAZ567-568-121800- /O.CON.KSEW.WS.W.0004.000000T0000Z-210113T0000Z/ Cascades of Whatcom and Skagit Counties- Cascades of Snohomish and King Counties- including Stevens Pass and Snoqualmie Pass 151 AM PST Tue Jan 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON ABOVE 3000 FEET... * WHAT...Heavy wet snow continued above 3000 feet. Additional snow accumulations of up to 10 inches. * WHERE...Cascade mountains and valleys of Whatcom and Skagit Counties, including Maple Falls, the Mount Baker Ski Area, Newhalem, Lyman, and Concrete and Cascade mountains and valleys of Snohomish and King Counties, including Darrington, Index, Skykomish, Stevens Pass, and Snoqualmie Pass. * WHEN...Until 4 PM PST this afternoon. * 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. && $$ www.weather.gov/seattle
276 WWUS46 KSEW 121801 WSWSEW URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 1001 AM PST Tue Jan 12 2021 WAZ567-568-121915- /O.CAN.KSEW.WS.W.0004.000000T0000Z-210113T0000Z/ Cascades of Whatcom and Skagit Counties- Cascades of Snohomish and King Counties- 1001 AM PST Tue Jan 12 2021 ...WINTER STORM WARNING IS CANCELLED... Snow levels have risen above pass level this morning and will continue to rise throughout the day. Additional accumulations will be confined to highest terrain. $$ www.weather.gov/seattle
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 9:20 PM PST | Coastal Flood Advisory | SEW | 17 hr | |
| Jan 11, 2:41 AM PST | Winter Weather Advisory | SEW | 6 hr | |
| Jan 11, 3:23 AM PST | Small Craft Advisory | SEW | 11 hr | |
| Jan 11, 8:35 AM PST | Small Craft Advisory | SEW | 39 hr | |
| Jan 11, 2:28 PM PST | Coastal Flood Advisory | SEW | San Juan | 18 hr |
| Jan 11, 2:28 PM PST | Coastal Flood Advisory | SEW | 26 hr | |
| Jan 11, 2:50 PM PST | River Flood Warning | SEW | Mason | 4 days |
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.