Alexander County weather alerts
There are no active weather alerts for Alexander County, IL right now.
Since 2016 the National Weather Service has issued about 956 alerts that included Alexander County, roughly 96 a year. The most common is the severe thunderstorm warning (184 from 2016 to 2025). The last tornado warning was issued on August 20, 2026. 14 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 Alexander County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Mississippi County, Scott County, Union County, Pulaski County.
Alexander County alert history
Alert events that included Alexander County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 184 | 30 | August 20, 2026 |
| Flood Warning | 96 | 4 | June 18, 2026 |
| Dense Fog Advisory | 91 | 4 | February 27, 2026 |
| Flood Watch | 66 | 5 | August 20, 2026 |
| Wind Advisory | 65 | 6 | June 17, 2026 |
| Severe Thunderstorm Watch | 62 | 10 | August 20, 2026 |
| Tornado Watch | 60 | 4 | June 26, 2026 |
| Flood Advisory | 55 | 2 | July 10, 2026 |
| Heat Advisory | 50 | 10 | September 15, 2026 |
| Winter Weather Advisory | 38 | 1 | January 21, 2026 |
| Flash Flood Warning | 31 | 6 | August 20, 2026 |
| Tornado Warning | 28 | 4 | August 20, 2026 |
| Freeze Warning | 25 | 2 | November 8, 2026 |
| Frost Advisory | 24 | 2 | November 7, 2026 |
| Extreme Heat Warning | 13 | 5 | September 1, 2026 |
| Freeze Watch | 13 | 1 | November 8, 2026 |
| Cold Weather Advisory | 13 | 2 | January 31, 2026 |
| Winter Storm Warning | 12 | 1 | January 24, 2026 |
| Winter Storm Watch | 9 | 1 | January 24, 2026 |
| Red Flag Warning | 9 | 1 | March 29, 2026 |
| Extreme Heat Watch | 5 | 2 | September 1, 2026 |
| Ice Storm Warning | 3 | 0 | January 5, 2025 |
| Fire Weather Watch | 1 | 0 | October 14, 2022 |
| Extreme Cold Watch | 1 | 0 | December 23, 2022 |
| Extreme Cold Warning | 1 | 1 | January 26, 2026 |
| High Wind Warning | 1 | 1 | March 15, 2026 |
Tornado history in Alexander County
14 tornadoes have been recorded in Alexander County since 1950, injuring 13 people. That ranks 90 of 102 counties in Illinois. The most recent was on March 30, 2025 (rated EF1).
Strongest tornadoes in Alexander County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| January 21, 1999 | F2 | Alexander County | 8 mi | 300 yd | 0 | 0 |
| April 21, 1972 | F2 | Alexander County | 6.9 mi | 10 yd | 0 | 3 |
| April 3, 1957 | F2 | Alexander County | 6.8 mi | 10 yd | 0 | 5 |
| April 23, 2011 | EF2 | Alexander County | 2.9 mi | 175 yd | 0 | 0 |
| January 18, 1973 | F1 | Alexander County | 95.9 mi | 10 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 30, 2025 | EF1 | Alexander County | 23.9 mi | 150 yd | 0 | 0 |
| October 31, 2013 | EF1 | Alexander County | 6.5 mi | 50 yd | 0 | 0 |
| October 31, 2013 | EF0 | Alexander County | 1.2 mi | 200 yd | 0 | 0 |
| April 23, 2011 | EF2 | Alexander County | 2.9 mi | 175 yd | 0 | 0 |
| May 6, 2003 | F0 | Alexander County | 0.3 mi | 30 yd | 0 | 0 |
About Alexander County
- Population: 4,594 (2024 estimate)
- State: Illinois
- NOAA Weather Radio SAME code: 017003 (how to use it)