Snohomish County weather alerts
There are no active weather alerts for Snohomish County, WA right now.
Since 2016 the National Weather Service has issued about 226 alerts that included Snohomish County, roughly 23 a year. The most common is the flood warning (136 from 2016 to 2025). No tornado warnings were recorded here in that period. 7 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Snohomish County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring King County, Chelan County, Skagit County, Island County.
Snohomish County alert history
Alert events that included Snohomish County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 136 | 8 | March 20, 2026 |
| Flood Watch | 45 | 1 | March 18, 2026 |
| Flood Advisory | 39 | 0 | December 11, 2025 |
| Severe Thunderstorm Warning | 4 | 0 | August 4, 2021 |
| Flash Flood Warning | 2 | 0 | November 22, 2022 |
Tornado history in Snohomish County
7 tornadoes have been recorded in Snohomish County since 1950. That ranks 6 of 39 counties in Washington. The most recent was on June 16, 2006 (rated F0).
Strongest tornadoes in Snohomish County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 24, 1970 | F2 | Snohomish County | 0.3 mi | 30 yd | 0 | 0 |
| May 13, 1986 | F2 | Snohomish County | 0.3 mi | 10 yd | 0 | 0 |
| October 26, 1971 | F1 | Snohomish County | 3 mi | 100 yd | 0 | 0 |
| May 18, 2005 | F1 | Snohomish County | 0.2 mi | 10 yd | 0 | 0 |
| August 24, 1997 | F0 | Snohomish County | 0.5 mi | 20 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 16, 2006 | F0 | Snohomish County | 0.5 mi | 50 yd | 0 | 0 |
| May 18, 2005 | F1 | Snohomish County | 0.2 mi | 10 yd | 0 | 0 |
| June 5, 2004 | F0 | Snohomish County | 0.1 mi | 10 yd | 0 | 0 |
| August 24, 1997 | F0 | Snohomish County | 0.5 mi | 20 yd | 0 | 0 |
| May 13, 1986 | F2 | Snohomish County | 0.3 mi | 10 yd | 0 | 0 |
About Snohomish County
- Population: 864,113 (2024 estimate)
- State: Washington
- NOAA Weather Radio SAME code: 053061 (how to use it)
- Cities: Everett