Alert archive / Illinois / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Illinois, March 2021
23 severe thunderstorm warnings in March 2021. 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 March 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 23
- Busiest day
- March 28, 202111 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 |
|---|---|---|---|---|
| Mar 11, 3:09 PM CST | Severe Thunderstorm Warning | PAH | Jackson, Union | 33 min |
| Mar 23, 7:26 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 34 min |
| Mar 23, 11:02 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 43 min |
| Mar 27, 4:23 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 52 min |
| Mar 27, 4:47 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 43 min |
| Mar 27, 4:52 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Madison | 38 min |
| Mar 27, 4:54 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 48 min |
| Mar 27, 5:18 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 42 min |
| Mar 27, 5:26 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 38 min |
| Mar 27, 5:32 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 43 min |
| Mar 27, 6:07 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Shelby | 21 min |
| Mar 27, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 49 min |
| Mar 27, 7:06 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 39 min |
| Mar 27, 7:27 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair, Washington | 48 min |
| Mar 27, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Saint Clair and 1 more | 47 min |
| Mar 27, 8:06 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Shelby | 54 min |
| Mar 27, 8:11 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 64 min |
| Mar 27, 8:20 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper | 55 min |
| Mar 27, 8:21 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Washington | 39 min |
| Mar 27, 8:50 PM CDT | Severe Thunderstorm Warning | ILX | Clark | 40 min |
| Mar 27, 9:02 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Crawford, Jasper, Lawrence, Richland | 58 min |
| Mar 27, 9:11 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 49 min |
| Mar 27, 9:27 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 21 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Saint Clair County6
- Washington County5
- Madison County4
- Clinton County4
- Monroe County3
- Calhoun County2
- Pike County2
- Greene County2
- Macoupin County2
- Shelby County2
- Bond County2
- Randolph County2
- Fayette County2
- Marion County2
- Clay County2
- Jasper County2
- Clark County2
- Jackson County1
- Union County1
- Jersey County1
- Morgan County1
- Sangamon County1
- Montgomery County1
- Christian County1
- Macon County1
- Moultrie County1
- Coles County1
- Cumberland County1
- Effingham County1
- Crawford County1
- Lawrence County1
- Richland County1
- Wayne County1
- Edgar County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.