Alert archive / Illinois / Flash Flood Warnings / 2023
Flash Flood Warnings in Illinois, May 2023
21 flash flood warnings in May 2023. 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 May 2023. Tap one for its archive.
- Flash Flood Warnings
- 21
- Busiest day
- May 8, 20238 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 |
|---|---|---|---|---|
| May 7, 3:43 AM CDT | Flash Flood Warning | ILX | McLean, Tazewell | 4 hr |
| May 7, 4:13 AM CDT | Flash Flood Warning | ILX | Champaign, Piatt | 4 hr |
| May 7, 3:21 PM CDT | Flash Flood Warning | ILX | Sangamon | 3 hr |
| May 7, 4:54 PM CDT | Flash Flood Warning | ILX | Sangamon | 3 hr |
| May 7, 5:52 PM CDT | Flash Flood Warning | ILX | Fulton, Mason, Schuyler | 3 hr |
| May 7, 7:23 PM CDT | Flash Flood Warning | LOT | Grundy, Kankakee, Kendall, Will | 5 hr |
| May 7, 7:32 PM CDT | Flash Flood Warning | LOT | DeKalb, LaSalle, Lee | 5 hr |
| May 7, 8:19 PM CDT | Flash Flood Warning | ILX | Sangamon | 3 hr |
| May 7, 8:33 PM CDT | Flash Flood Warning | DVN | Bureau, Putnam | 110 min |
| May 7, 9:35 PM CDT | Flash Flood Warning | ILX | Cass, Fulton, Mason, Menard, Morgan, Sangamon and 1 more | 115 min |
| May 7, 9:40 PM CDT | Flash Flood Warning | ILX | Christian, Sangamon | 110 min |
| May 7, 10:13 PM CDT | Flash Flood Warning | LSX | Montgomery | 6 hr |
| May 8, 2:07 AM CDT | Flash Flood Warning | DVN | Henry, Rock Island | 3 hr |
| May 13, 4:34 PM CDT | Flash Flood Warning | DVN | Mercer | 4 hr |
| May 14, 4:23 PM CDT | Flash Flood Warning | ILX | Sangamon | 3 hr |
| May 14, 5:56 PM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 4 hr |
| May 14, 6:11 PM CDT | Flash Flood Warning | ILX | Cass, Menard, Morgan, Sangamon | 3 hr |
| May 14, 6:50 PM CDT | Flash Flood Warning | ILX | Morgan, Sangamon | 3 hr |
| May 14, 7:21 PM CDT | Flash Flood Warning | ILX | Christian, Sangamon | 2 hr |
| May 14, 8:16 PM CDT | Flash Flood Warning | LSX | Fayette, Montgomery | 2 hr |
| May 14, 8:23 PM CDT | Flash Flood Warning | LSX | Marion | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Sangamon County9
- Morgan County3
- Fulton County2
- Mason County2
- Schuyler County2
- Cass County2
- Menard County2
- Christian County2
- Montgomery County2
- McLean County1
- Tazewell County1
- Champaign County1
- Piatt County1
- Grundy County1
- Kankakee County1
- Kendall County1
- Will County1
- DeKalb County1
- LaSalle County1
- Lee County1
- Bureau County1
- Putnam County1
- Henry County1
- Rock Island County1
- Mercer County1
- Monroe County1
- Saint Clair County1
- Fayette County1
- Marion County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.