Alert archive / Illinois / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Illinois, May 2021
44 severe thunderstorm warnings in May 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 May 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 44
- Busiest day
- May 3, 202112 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 |
|---|---|---|---|---|
| May 3, 2:54 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 51 min |
| May 3, 3:27 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 48 min |
| May 3, 3:59 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Schuyler | 46 min |
| May 3, 4:13 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 28 min |
| May 3, 4:43 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard, Morgan, Sangamon, Schuyler | 47 min |
| May 3, 5:17 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Logan, Mason, Menard | 43 min |
| May 3, 5:25 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 33 min |
| May 3, 6:13 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 47 min |
| May 3, 6:32 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 32 min |
| May 3, 6:37 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon | 53 min |
| May 3, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 23 min |
| May 3, 6:54 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 51 min |
| May 3, 7:06 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Douglas, Macon, Moultrie, Shelby | 54 min |
| May 3, 7:32 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 21 min |
| May 3, 7:33 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 42 min |
| May 3, 7:39 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Montgomery | 51 min |
| May 3, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Coles, Edgar | 63 min |
| May 3, 8:19 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Moultrie, Shelby | 41 min |
| May 3, 9:02 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 43 min |
| May 6, 1:13 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 47 min |
| May 6, 1:29 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Richland | 46 min |
| May 6, 2:58 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Moultrie, Shelby | 26 min |
| May 6, 3:01 PM CDT | Severe Thunderstorm Warning | ILX | Effingham | 27 min |
| May 6, 3:22 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham | 36 min |
| May 6, 3:40 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 26 min |
| May 6, 3:52 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Wayne | 38 min |
| May 6, 5:27 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Pope, Saline, Williamson | 38 min |
| May 6, 5:57 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Massac | 33 min |
| May 16, 10:36 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 39 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Effingham, Shelby | 50 min |
| May 16, 10:58 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 47 min |
| May 26, 6:37 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 23 min |
| May 27, 11:13 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 47 min |
| May 27, 11:32 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 43 min |
| May 27, 11:50 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison, Saint Clair | 55 min |
| May 27, 11:58 AM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 62 min |
| May 27, 12:07 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin, Montgomery | 38 min |
| May 27, 1:05 PM CDT | Severe Thunderstorm Warning | ILX | Christian, DeWitt, Logan, Macon, Sangamon, Shelby | 55 min |
| May 27, 2:31 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 44 min |
| May 27, 2:46 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 29 min |
| May 27, 3:03 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 42 min |
| May 27, 3:06 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper | 54 min |
| May 27, 3:47 PM CDT | Severe Thunderstorm Warning | ILX | Jasper, Richland | 58 min |
| May 27, 4:31 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Hamilton, Jackson, Jefferson, Perry, Williamson | 44 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Greene County6
- Macoupin County6
- Montgomery County6
- Shelby County6
- Sangamon County5
- Christian County5
- Morgan County4
- Coles County4
- Effingham County4
- Cass County3
- Macon County3
- Moultrie County3
- Clay County3
- Fayette County3
- Adams County2
- Brown County2
- Schuyler County2
- Menard County2
- Logan County2
- Bond County2
- Cumberland County2
- Richland County2
- Marion County2
- Jefferson County2
- Wayne County2
- Johnson County2
- Williamson County2
- Jackson County2
- Calhoun County2
- Jersey County2
- Jasper County2
- Mason County1
- Scott County1
- Douglas County1
- Clark County1
- Edgar County1
- Iroquois County1
- Alexander County1
- Pope County1
- Saline 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.