Alert archive / Illinois / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Illinois, October 2021
21 severe thunderstorm warnings in October 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 October 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 21
- Busiest day
- October 25, 20219 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 |
|---|---|---|---|---|
| Oct 11, 4:56 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon, Piatt | 49 min |
| Oct 11, 5:03 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon, Piatt | 42 min |
| Oct 11, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Woodford | 61 min |
| Oct 11, 5:37 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Grundy, LaSalle, Livingston | 68 min |
| Oct 11, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, DeWitt, Douglas, McLean, Macon, Piatt | 63 min |
| Oct 11, 6:44 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee, Ogle | 61 min |
| Oct 15, 6:07 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pope | 18 min |
| Oct 24, 4:49 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 41 min |
| Oct 24, 5:39 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Morgan, Sangamon, Schuyler, Scott | 51 min |
| Oct 24, 5:56 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard, Morgan, Sangamon, Scott | 49 min |
| Oct 24, 6:26 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean, Vermilion | 34 min |
| Oct 24, 6:28 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard, Morgan, Sangamon, Tazewell | 62 min |
| Oct 24, 7:04 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon, Menard, Sangamon and 1 more | 41 min |
| Oct 24, 7:39 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 51 min |
| Oct 24, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 48 min |
| Oct 24, 9:08 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 54 min |
| Oct 24, 9:42 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 48 min |
| Oct 24, 10:13 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion | 62 min |
| Oct 24, 10:40 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 26 min |
| Oct 24, 10:57 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham | 33 min |
| Oct 24, 11:37 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Union | 38 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McLean County5
- DeWitt County4
- Macon County4
- Sangamon County4
- Logan County3
- Piatt County3
- Cass County3
- Morgan County3
- Menard County3
- Monroe County3
- LaSalle County2
- Champaign County2
- Mason County2
- Scott County2
- Tazewell County2
- Saint Clair County2
- Fayette County2
- Marion County2
- Woodford County1
- Ford County1
- Grundy County1
- Livingston County1
- Douglas County1
- DeKalb County1
- Lee County1
- Ogle County1
- Massac County1
- Pope County1
- Pike County1
- Schuyler County1
- Vermilion County1
- Randolph County1
- Jackson County1
- Clinton County1
- Clay County1
- Effingham County1
- Alexander County1
- Union 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. Warning verification from the Mesonet's Cow. Rebuilt daily.