Alert archive / Illinois / Flash Flood Warnings / 2024
Flash Flood Warnings in Illinois, July 2024
52 flash flood warnings in July 2024. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in July 2024. Tap one for its archive.
- Flash Flood Warnings
- 52
- Busiest day
- July 16, 202424 flash flood 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 |
|---|---|---|---|---|
| Jul 2, 7:11 PM CDT | Flash Flood Warning | DVN | Jo Daviess | 3 hr |
| Jul 4, 5:48 AM CDT | Flash Flood Warning | LSX | Clinton, Madison, Monroe, Saint Clair, Washington | 3 hr |
| Jul 9, 3:37 PM CDT | Flash Flood Warning | LOT | Cook | 3 hr |
| Jul 12, 4:57 PM CDT | Flash Flood Warning | PAH | Perry | 3 hr |
| Jul 12, 5:47 PM CDT | Flash Flood Warning | LSX | Washington | 3 hr |
| Jul 13, 4:33 AM CDT | Flash Flood Warning | PAH | Jackson | 2 hr |
| Jul 13, 4:48 AM CDT | Flash Flood Warning | PAH | Union, Williamson | 2 hr |
| Jul 13, 5:08 AM CDT | Flash Flood Warning | PAH | Jackson, Perry | 3 hr |
| Jul 13, 10:59 PM CDT | Flash Flood Warning | LOT | Winnebago | 5 hr |
| Jul 13, 11:16 PM CDT | Flash Flood Warning | LOT | Boone, DeKalb, McHenry | 5 hr |
| Jul 14, 12:01 AM CDT | Flash Flood Warning | LOT | Ogle, Winnebago | 4 hr |
| Jul 14, 8:02 PM CDT | Flash Flood Warning | LOT | Winnebago | 4 hr |
| Jul 14, 8:21 PM CDT | Flash Flood Warning | DVN | Carroll, Jo Daviess, Stephenson | 4 hr |
| Jul 14, 8:30 PM CDT | Flash Flood Warning | LOT | Boone | 3 hr |
| Jul 14, 9:31 PM CDT | Flash Flood Warning | LOT | Lee, Ogle | 2 hr |
| Jul 14, 9:34 PM CDT | Flash Flood Warning | LOT | DeKalb | 2 hr |
| Jul 14, 9:48 PM CDT | Flash Flood Warning | LOT | Kane | 109 min |
| Jul 14, 10:30 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Will | 3 hr |
| Jul 15, 8:11 PM CDT | Flash Flood Warning | LOT | Winnebago | 3 hr |
| Jul 15, 8:35 PM CDT | Flash Flood Warning | LOT | Lake | 4 hr |
| Jul 15, 9:29 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Will | 3 hr |
| Jul 15, 10:33 PM CDT | Flash Flood Warning | ILX | Fulton, Knox, Mason, Peoria, Tazewell | 3 hr |
| Jul 15, 11:01 PM CDT | Flash Flood Warning | DVN | Henderson, McDonough, Warren | 6 hr |
| Jul 15, 11:08 PM CDT | Flash Flood Warning | ILX | Logan, Mason, Peoria, Tazewell | 5 hr |
| Jul 16, 1:05 AM CDT | Flash Flood Warning | ILX | Cass, Christian, DeWitt, Logan, Macon, Mason and 5 more | 3 hr |
| Jul 16, 1:27 AM CDT | Flash Flood Warning | ILX | Fulton, Mason | 8 hr |
| Jul 16, 2:52 AM CDT | Flash Flood Warning | ILX | Cass, Christian, Effingham, Menard, Morgan, Moultrie and 2 more | 4 hr |
| Jul 16, 4:47 AM CDT | Flash Flood Warning | LSX | Pike | 3 hr |
| Jul 16, 4:51 AM CDT | Flash Flood Warning | LSX | Montgomery | 3 hr |
| Jul 16, 4:58 AM CDT | Flash Flood Warning | LSX | Fayette | 3 hr |
| Jul 16, 5:30 AM CDT | Flash Flood Warning | LSX | Marion | 3 hr |
| Jul 16, 5:57 AM CDT | Flash Flood Warning | PAH | Jefferson | 13 hr |
| Jul 16, 6:37 AM CDT | Flash Flood Warning | LSX | Clinton, Washington | 10 hr |
| Jul 16, 6:44 AM CDT | Flash Flood Warning | LSX | Marion | 9 hr |
| Jul 16, 7:21 AM CDT | Flash Flood Warning | PAH | Jefferson, Perry | 12 hr |
| Jul 16, 7:54 AM CDT | Flash Flood Warning | LSX | Bond, Clinton, Fayette, Madison, Monroe, Saint Clair | 4 hr |
| Jul 16, 9:33 AM CDT | Flash Flood Warning | LSX | Monroe, Randolph, Saint Clair | 3 hr |
| Jul 16, 10:43 AM CDT | Flash Flood Warning | LSX | Calhoun | 3 hr |
| Jul 16, 11:35 AM CDT | Flash Flood Warning | LSX | Calhoun, Greene, Jersey, Madison | 3 hr |
| Jul 16, 12:01 PM CDT | Flash Flood Warning | LSX | Madison, Monroe, Saint Clair | 3 hr |
| Jul 16, 12:31 PM CDT | Flash Flood Warning | LSX | Randolph | 3 hr |
| Jul 16, 2:34 PM CDT | Flash Flood Warning | PAH | Franklin, Perry | 4 hr |
| Jul 16, 11:39 PM CDT | Flash Flood Warning | PAH | Jackson, Union, Williamson | 6 hr |
| Jul 23, 5:38 PM CDT | Flash Flood Warning | LOT | Boone, McHenry | 3 hr |
| Jul 25, 7:49 AM CDT | Flash Flood Warning | DVN | Hancock | 3 hr |
| Jul 28, 5:45 PM CDT | Flash Flood Warning | PAH | Wayne | 3 hr |
| Jul 28, 6:59 PM CDT | Flash Flood Warning | LSX | Marion | 3 hr |
| Jul 28, 8:54 PM CDT | Flash Flood Warning | PAH | Franklin, Gallatin, Saline, Williamson | 7 hr |
| Jul 29, 9:17 PM CDT | Flash Flood Warning | LSX | Fayette | 3 hr |
| Jul 29, 10:57 PM CDT | Flash Flood Warning | LSX | Bond, Clinton, Madison | 4 hr |
| Jul 30, 5:32 PM CDT | Flash Flood Warning | PAH | Franklin, Perry | 92 min |
| Jul 30, 9:27 PM CDT | Flash Flood Warning | PAH | Pulaski | 116 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Madison County5
- Perry County5
- Clinton County4
- Monroe County4
- Saint Clair County4
- Winnebago County4
- Mason County4
- Washington County3
- Cook County3
- Jackson County3
- Williamson County3
- Boone County3
- Fayette County3
- Marion County3
- Franklin County3
- Jo Daviess County2
- Union County2
- DeKalb County2
- McHenry County2
- Ogle County2
- DuPage County2
- Will County2
- Fulton County2
- Peoria County2
- Tazewell County2
- Logan County2
- Cass County2
- Christian County2
- Menard County2
- Moultrie County2
- Sangamon County2
- Shelby County2
- Jefferson County2
- Bond County2
- Randolph County2
- Calhoun County2
- Carroll County1
- Stephenson County1
- Lee County1
- Kane County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.