Washington County weather alerts
There are no active weather alerts for Washington County, IL right now.
Since 2016 the National Weather Service has issued about 672 alerts that included Washington County, roughly 67 a year. The most common is the severe thunderstorm warning (116 from 2016 to 2025). The last tornado warning was issued on March 15, 2026. 35 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 Washington County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Jefferson County, Marion County, St. Clair County, Randolph County.
Washington County alert history
Alert events that included Washington County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 116 | 11 | July 10, 2026 |
| Severe Thunderstorm Watch | 71 | 4 | July 10, 2026 |
| Dense Fog Advisory | 68 | 2 | March 6, 2026 |
| Winter Weather Advisory | 50 | 0 | December 1, 2025 |
| Flood Watch | 49 | 5 | June 25, 2026 |
| Wind Advisory | 45 | 3 | June 17, 2026 |
| Tornado Watch | 41 | 5 | June 21, 2026 |
| Heat Advisory | 36 | 7 | September 15, 2026 |
| Freeze Warning | 30 | 2 | November 7, 2026 |
| Flood Advisory | 24 | 5 | August 17, 2026 |
| Flash Flood Warning | 19 | 2 | July 11, 2026 |
| Frost Advisory | 18 | 1 | October 18, 2026 |
| Tornado Warning | 18 | 2 | March 15, 2026 |
| Flood Warning | 15 | 0 | April 5, 2025 |
| Cold Weather Advisory | 11 | 3 | January 27, 2026 |
| Extreme Heat Warning | 10 | 4 | September 3, 2026 |
| Winter Storm Warning | 10 | 1 | January 24, 2026 |
| Winter Storm Watch | 10 | 1 | January 24, 2026 |
| Freeze Watch | 9 | 0 | November 2, 2025 |
| Red Flag Warning | 8 | 1 | March 29, 2026 |
| Extreme Heat Watch | 5 | 3 | August 31, 2026 |
| High Wind Warning | 3 | 0 | March 5, 2025 |
| Extreme Cold Warning | 2 | 1 | January 26, 2026 |
| Ice Storm Warning | 1 | 0 | January 13, 2017 |
| High Wind Watch | 1 | 0 | March 14, 2019 |
| Fire Weather Watch | 1 | 0 | October 17, 2020 |
| Extreme Cold Watch | 1 | 0 | December 22, 2022 |
Tornado history in Washington County
35 tornadoes have been recorded in Washington County since 1950, killing 2 people and injuring 4. That ranks 41 of 102 counties in Illinois. The most recent was on April 15, 2023 (rated unknown).
Strongest tornadoes in Washington County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 17, 2013 | EF4 | Washington County | 10.6 mi | 200 yd | 2 | 2 |
| March 14, 1953 | F2 | Washington County | 42.3 mi | 200 yd | 0 | 0 |
| March 20, 1976 | F2 | St. Clair County | 39 mi | 250 yd | 0 | 0 |
| September 24, 1961 | F2 | St. Clair County | 5 mi | 10 yd | 0 | 1 |
| March 8, 2009 | EF2 | Washington County | 4.3 mi | 200 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 15, 2023 | ? | Washington County | 0.2 mi | 50 yd | 0 | 0 |
| October 24, 2021 | EF0 | Washington County | 2.1 mi | 180 yd | 0 | 0 |
| November 17, 2013 | EF1 | Washington County | 4.8 mi | 100 yd | 0 | 0 |
| November 17, 2013 | EF4 | Washington County | 10.6 mi | 200 yd | 2 | 2 |
| September 25, 2012 | EF1 | Washington County | 4 mi | 100 yd | 0 | 1 |
About Washington County
- Population: 13,535 (2024 estimate)
- State: Illinois
- NOAA Weather Radio SAME code: 017189 (how to use it)