Alert archive / Illinois / Flash Flood Warnings / 2009
Flash Flood Warnings in Illinois, August 2009
17 flash flood warnings in August 2009. 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 August 2009. Tap one for its archive.
- Flash Flood Warnings
- 17
- Busiest day
- August 5, 20093 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 |
|---|---|---|---|---|
| Aug 3, 12:41 PM CDT | Flash Flood Warning | LSX | Adams | 3 hr |
| Aug 4, 8:06 PM CDT | Flash Flood Warning | PAH | Alexander, Pulaski, Union | 3 hr |
| Aug 4, 8:49 PM CDT | Flash Flood Warning | PAH | Johnson, Massac, Pope | 3 hr |
| Aug 4, 9:54 PM CDT | Flash Flood Warning | PAH | Alexander | 111 min |
| Aug 9, 2:03 PM CDT | Flash Flood Warning | DVN | Jo Daviess | 6 hr |
| Aug 9, 8:54 PM CDT | Flash Flood Warning | DVN | Henderson, Henry, Mercer, Warren | 3 hr |
| Aug 9, 9:36 PM CDT | Flash Flood Warning | DVN | Jo Daviess, Stephenson | 3 hr |
| Aug 17, 1:57 AM CDT | Flash Flood Warning | LSX | Adams | 4 hr |
| Aug 17, 2:02 AM CDT | Flash Flood Warning | DVN | Hancock, McDonough | 7 hr |
| Aug 19, 7:08 PM CDT | Flash Flood Warning | LSX | Fayette | 6 hr |
| Aug 19, 7:28 PM CDT | Flash Flood Warning | ILX | Cumberland, Effingham, Jasper | 3 hr |
| Aug 26, 10:14 AM CDT | Flash Flood Warning | DVN | Rock Island | 6 hr |
| Aug 26, 11:51 AM CDT | Flash Flood Warning | DVN | Carroll, Whiteside | 6 hr |
| Aug 27, 2:06 AM CDT | Flash Flood Warning | DVN | Carroll, Rock Island, Whiteside | 3 hr |
| Aug 27, 9:34 PM CDT | Flash Flood Warning | DVN | Hancock, Henderson | 2 hr |
| Aug 27, 10:37 PM CDT | Flash Flood Warning | ILX | Champaign | 4 hr |
| Aug 28, 12:01 AM CDT | Flash Flood Warning | ILX | Vermilion | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County2
- Alexander County2
- Jo Daviess County2
- Henderson County2
- Hancock County2
- Rock Island County2
- Carroll County2
- Whiteside County2
- Pulaski County1
- Union County1
- Johnson County1
- Massac County1
- Pope County1
- Henry County1
- Mercer County1
- Warren County1
- Stephenson County1
- McDonough County1
- Fayette County1
- Cumberland County1
- Effingham County1
- Jasper County1
- Champaign County1
- Vermilion County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.