Warren County weather alerts
There are no active weather alerts for Warren County, IL right now.
Since 2016 the National Weather Service has issued about 810 alerts that included Warren County, roughly 81 a year. The most common is the severe thunderstorm warning (159 from 2016 to 2025). The last tornado warning was issued on July 20, 2026. 38 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 Warren County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Knox County, McDonough County, Fulton County, Mercer County.
Warren County alert history
Alert events that included Warren County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 159 | 20 | August 12, 2026 |
| Dense Fog Advisory | 97 | 5 | September 11, 2026 |
| Winter Weather Advisory | 92 | 2 | March 16, 2026 |
| Severe Thunderstorm Watch | 64 | 6 | August 13, 2026 |
| Wind Advisory | 62 | 5 | April 2, 2026 |
| Heat Advisory | 54 | 6 | August 31, 2026 |
| Flood Watch | 45 | 8 | September 17, 2026 |
| Cold Weather Advisory | 35 | 3 | January 26, 2026 |
| Tornado Watch | 28 | 8 | June 11, 2026 |
| Tornado Warning | 25 | 3 | July 20, 2026 |
| Freeze Warning | 21 | 1 | April 20, 2026 |
| Winter Storm Watch | 18 | 0 | November 29, 2025 |
| Flash Flood Warning | 16 | 5 | August 15, 2026 |
| Red Flag Warning | 15 | 2 | February 27, 2026 |
| Winter Storm Warning | 15 | 0 | November 29, 2025 |
| Frost Advisory | 14 | 1 | October 17, 2026 |
| Extreme Heat Warning | 12 | 3 | September 2, 2026 |
| Extreme Heat Watch | 7 | 2 | July 27, 2026 |
| Freeze Watch | 7 | 0 | October 16, 2024 |
| Extreme Cold Warning | 5 | 1 | January 23, 2026 |
| High Wind Warning | 5 | 1 | March 15, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Flood Warning | 3 | 0 | April 11, 2021 |
| Blizzard Warning | 2 | 1 | March 16, 2026 |
| High Wind Watch | 2 | 0 | November 27, 2019 |
| Fire Weather Watch | 2 | 2 | February 27, 2026 |
| Ice Storm Warning | 1 | 0 | February 5, 2019 |
Tornado history in Warren County
38 tornadoes have been recorded in Warren County since 1950, killing 1 people and injuring 12. That ranks 35 of 102 counties in Illinois. The most recent was on June 3, 2025 (rated EF1).
Strongest tornadoes in Warren County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 13, 1995 | F4 | Hancock County | 50 mi | 1,000 yd | 0 | 7 |
| September 26, 1959 | F2 | Warren County | 4.9 mi | 300 yd | 1 | 0 |
| May 10, 2003 | F2 | Adams County | 69.2 mi | 300 yd | 0 | 4 |
| April 5, 1999 | F2 | McDonough County | 9.4 mi | 100 yd | 0 | 0 |
| July 16, 2015 | EF2 | Warren County | 6 mi | 700 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 3, 2025 | EF1 | Warren County | 7.8 mi | 50 yd | 0 | 0 |
| April 20, 2025 | EF0 | Warren County | 4 mi | 25 yd | 0 | 0 |
| March 14, 2024 | EF1 | Warren County | 1.1 mi | 150 yd | 0 | 0 |
| May 13, 2022 | ? | Warren County | 0.1 mi | 10 yd | 0 | 0 |
| May 13, 2022 | ? | Warren County | 0.1 mi | 10 yd | 0 | 0 |
About Warren County
- Population: 16,217 (2024 estimate)
- State: Illinois
- NOAA Weather Radio SAME code: 017187 (how to use it)