Alert archive / Illinois / Areal Flood Warnings / 2026
Areal Flood Warnings in Illinois, August 2026
11 areal flood warnings in August 2026. 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 areal flood warnings reaches back to 2005.
Areal Flood Warnings by county
Each county as a circle sized by its count in August 2026. Tap one for its archive.
- Areal Flood Warnings
- 11
- Busiest day
- August 15, 20266 areal 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 |
|---|---|---|---|---|
| Aug 1, 9:09 AM CDT | Areal Flood Warning | LOT | Cook, DuPage, Kane, Kendall, Will | 6 hr |
| Aug 1, 5:44 PM CDT | Areal Flood Warning | LOT | Cook, Will | 6 hr |
| Aug 1, 11:37 PM CDT | Areal Flood Warning | LOT | Cook, Will | 11 hr |
| Aug 10, 2:32 AM CDT | Areal Flood Warning | LOT | Grundy, LaSalle, Livingston | 3 hr |
| Aug 14, 7:13 AM CDT | Areal Flood Warning | LOT | Ford, Iroquois | 15 hr |
| Aug 15, 6:37 AM CDT | Areal Flood Warning | ILX | Fulton, Knox, Mason, Peoria, Tazewell, Woodford | 27 hr |
| Aug 15, 7:33 AM CDT | Areal Flood Warning | ILX | McLean | 65 min |
| Aug 15, 7:40 AM CDT | Areal Flood Warning | ILX | McLean | 26 hr |
| Aug 15, 8:04 AM CDT | Areal Flood Warning | LOT | Ford | 9 hr |
| Aug 15, 12:40 PM CDT | Areal Flood Warning | ILX | McLean | 21 hr |
| Aug 15, 1:40 PM CDT | Areal Flood Warning | ILX | Champaign, Vermilion | 46 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
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.