Alert archive / Illinois / Severe Thunderstorm Warnings / 2023
Severe Thunderstorm Warnings in Illinois, September 2023
15 severe thunderstorm warnings in September 2023. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in September 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 15
- Busiest day
- September 26, 20236 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 4:12 AM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Kendall, Will | 31 min |
| Sep 26, 4:20 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 40 min |
| Sep 26, 4:38 PM CDT | Severe Thunderstorm Warning | ILX | Morgan | 22 min |
| Sep 26, 4:57 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 33 min |
| Sep 26, 5:05 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island | 40 min |
| Sep 26, 6:16 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 44 min |
| Sep 26, 6:53 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 37 min |
| Sep 26, 8:51 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 19 min |
| Sep 26, 10:49 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 41 min |
| Sep 26, 11:43 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 32 min |
| Sep 26, 11:45 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 30 min |
| Sep 27, 12:13 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 15 min |
| Sep 27, 12:31 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 20 min |
| Sep 27, 7:27 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jackson, Perry, Williamson | 48 min |
| Sep 27, 8:25 PM CDT | Severe Thunderstorm Warning | PAH | Hardin, Pope | 50 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Christian County3
- Morgan County2
- Shelby County2
- DuPage County1
- Kane County1
- Kendall County1
- Will County1
- Adams County1
- Brown County1
- Scott County1
- Henry County1
- Rock Island County1
- Lee County1
- Ogle County1
- Calhoun County1
- Tazewell County1
- Montgomery County1
- Monroe County1
- Saint Clair County1
- Franklin County1
- Jackson County1
- Perry County1
- Williamson County1
- Hardin County1
- Pope County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.