Alert archive / Illinois / Severe Thunderstorm Warnings / 2020
Severe Thunderstorm Warnings in Illinois, April 2020
84 severe thunderstorm warnings in April 2020. 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 April 2020. Tap one for its archive.
- Severe Thunderstorm Warnings
- 84
- Busiest day
- April 8, 202047 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 |
|---|---|---|---|---|
| Apr 7, 5:55 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess, Stephenson | 50 min |
| Apr 7, 6:14 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 61 min |
| Apr 7, 6:51 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 54 min |
| Apr 7, 7:01 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Winnebago | 59 min |
| Apr 7, 7:18 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 27 min |
| Apr 7, 7:27 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane, McHenry, Ogle | 48 min |
| Apr 7, 8:17 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island, Whiteside | 58 min |
| Apr 7, 8:17 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 28 min |
| Apr 7, 8:17 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 45 min |
| Apr 7, 8:38 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane | 25 min |
| Apr 7, 8:40 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 50 min |
| Apr 7, 9:07 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 23 min |
| Apr 7, 9:27 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 33 min |
| Apr 7, 9:40 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 35 min |
| Apr 7, 9:57 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 33 min |
| Apr 7, 10:09 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Warren | 36 min |
| Apr 7, 10:43 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Warren | 17 min |
| Apr 7, 10:48 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 24 min |
| Apr 8, 2:56 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson | 64 min |
| Apr 8, 3:26 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, McDonough | 49 min |
| Apr 8, 3:29 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 61 min |
| Apr 8, 3:41 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 49 min |
| Apr 8, 3:49 PM CDT | Severe Thunderstorm Warning | DVN | Warren | 26 min |
| Apr 8, 3:50 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 40 min |
| Apr 8, 3:53 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 22 min |
| Apr 8, 3:53 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Peoria, Stark | 52 min |
| Apr 8, 4:02 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 43 min |
| Apr 8, 4:08 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria | 30 min |
| Apr 8, 4:09 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 25 min |
| Apr 8, 4:34 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard, Morgan, Sangamon | 41 min |
| Apr 8, 4:37 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DeKalb, DuPage, Kane, Lake, McHenry | 23 min |
| Apr 8, 4:40 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Logan, Mason, Menard, Tazewell | 50 min |
| Apr 8, 4:43 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 22 min |
| Apr 8, 4:52 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 24 min |
| Apr 8, 5:10 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Logan, Macon, Menard, Sangamon | 50 min |
| Apr 8, 5:16 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon, Menard, Piatt | 44 min |
| Apr 8, 5:24 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 36 min |
| Apr 8, 5:26 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 49 min |
| Apr 8, 5:27 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard, Morgan, Sangamon | 33 min |
| Apr 8, 5:29 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Sangamon, Scott | 31 min |
| Apr 8, 5:56 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Christian, Douglas, Macon, Moultrie, Piatt and 2 more | 49 min |
| Apr 8, 5:59 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Perry | 46 min |
| Apr 8, 6:08 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 52 min |
| Apr 8, 6:15 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 32 min |
| Apr 8, 6:16 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Pulaski | 44 min |
| Apr 8, 6:17 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 43 min |
| Apr 8, 6:31 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Union | 44 min |
| Apr 8, 6:33 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 5 more | 42 min |
| Apr 8, 6:47 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Macoupin, Madison | 27 min |
| Apr 8, 6:56 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Union | 23 min |
| Apr 8, 7:00 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 45 min |
| Apr 8, 7:13 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Clay, Crawford, Effingham, Jasper, Lawrence and 1 more | 47 min |
| Apr 8, 7:28 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Pope, Saline, Union, Williamson | 21 min |
| Apr 8, 7:30 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wabash | 45 min |
| Apr 8, 7:32 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 43 min |
| Apr 8, 7:35 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 40 min |
| Apr 8, 7:55 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 29 min |
| Apr 8, 7:55 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Johnson, Pulaski, Union | 50 min |
| Apr 8, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Lawrence, Richland | 33 min |
| Apr 8, 8:17 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wabash, White | 22 min |
| Apr 8, 8:17 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pulaski | 43 min |
| Apr 8, 8:40 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Johnson, Pulaski, Union | 20 min |
| Apr 11, 5:25 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 50 min |
| Apr 11, 6:05 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 25 min |
| Apr 11, 6:57 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon, Scott | 48 min |
| Apr 11, 7:31 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 44 min |
| Apr 11, 8:06 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Shelby | 39 min |
| Apr 25, 12:59 PM CDT | Severe Thunderstorm Warning | PAH | White | 46 min |
| Apr 28, 4:02 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 28 min |
| Apr 28, 4:17 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Lee | 28 min |
| Apr 28, 4:28 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Peoria, Stark | 47 min |
| Apr 28, 4:45 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 45 min |
| Apr 28, 5:07 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Peoria, Woodford | 38 min |
| Apr 28, 5:15 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard, Tazewell | 60 min |
| Apr 28, 5:37 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Woodford | 38 min |
| Apr 28, 5:51 PM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 39 min |
| Apr 28, 5:55 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Scott | 34 min |
| Apr 28, 6:02 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard | 43 min |
| Apr 28, 6:51 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 39 min |
| Apr 28, 7:07 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon, Shelby | 53 min |
| Apr 28, 7:38 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 52 min |
| Apr 28, 7:54 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 36 min |
| Apr 28, 8:00 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Piatt, Shelby | 45 min |
| Apr 28, 8:41 PM CDT | Severe Thunderstorm Warning | ILX | Douglas, Moultrie, Piatt | 49 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Sangamon County8
- Menard County7
- Christian County7
- Rock Island County6
- Mercer County6
- Logan County6
- Macon County6
- Shelby County6
- Warren County5
- Hancock County5
- Morgan County5
- Union County5
- Cook County4
- McDonough County4
- Peoria County4
- Fulton County4
- Cass County4
- Mason County4
- Piatt County4
- Moultrie County4
- Alexander County4
- Pulaski County4
- McHenry County3
- DeKalb County3
- Kane County3
- Knox County3
- Henderson County3
- Tazewell County3
- Perry County3
- Scott County3
- Douglas County3
- Calhoun County3
- Jersey County3
- Clay County3
- Johnson County3
- Marshall County3
- Stephenson County2
- Winnebago County2
- Lake County2
- Henry County2
45 more counties
- DuPage County2
- Bureau County2
- Stark County2
- Adams County2
- Pike County2
- McLean County2
- Champaign County2
- Jackson County2
- Clark County2
- Crawford County2
- Effingham County2
- Jasper County2
- Fayette County2
- Lawrence County2
- Richland County2
- Edwards County2
- Wabash County2
- Marion County2
- White County2
- LaSalle County2
- Woodford County2
- Jo Daviess County1
- Boone County1
- Ogle County1
- Whiteside County1
- Putnam County1
- Brown County1
- DeWitt County1
- Randolph County1
- Vermilion County1
- Coles County1
- Cumberland County1
- Edgar County1
- Macoupin County1
- Madison County1
- Bond County1
- Montgomery County1
- Pope County1
- Saline County1
- Williamson County1
- Wayne County1
- Clinton County1
- Washington County1
- Massac County1
- Lee County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.