Alert archive / Illinois / Flash Flood Warnings / 2011
Flash Flood Warnings in Illinois, May 2011
32 flash flood warnings in May 2011. 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 2011. Tap one for its archive.
- Flash Flood Warnings
- 32
- Busiest day
- May 2, 20117 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 |
|---|---|---|---|---|
| Apr 30, 11:54 PM CDT | Flash Flood Warning | PAH | Alexander, Johnson, Pulaski, Union, Williamson | 4 hr |
| May 1, 9:25 PM CDT | Flash Flood Warning | PAH | Alexander, Franklin, Jackson, Jefferson, Johnson, Perry and 3 more | 7 hr |
| May 1, 9:36 PM CDT | Flash Flood Warning | PAH | Edwards, Gallatin, Hamilton, Hardin, Pope, Saline and 3 more | 7 hr |
| May 2, 1:09 AM CDT | Flash Flood Warning | PAH | Alexander, Hardin, Johnson, Massac, Pope, Pulaski | 6 hr |
| May 2, 4:38 AM CDT | Flash Flood Warning | PAH | Alexander, Edwards, Gallatin, Hardin, Johnson, Pope and 6 more | 3 hr |
| May 2, 10:00 AM CDT | Flash Flood Warning | PAH | Alexander | 6 hr |
| May 2, 11:23 AM CDT | Flash Flood Warning | ILX | Lawrence | 25 hr |
| May 2, 2:34 PM CDT | Flash Flood Warning | PAH | Alexander | 48 hr |
| May 3, 3:21 AM CDT | Flash Flood Warning | PAH | Massac, Pope | 12 hr |
| May 3, 11:59 AM CDT | Flash Flood Warning | ILX | Lawrence | 4 days |
| May 11, 5:02 PM CDT | Flash Flood Warning | LOT | Cook, Kane, Lake, McHenry | 4 hr |
| May 13, 1:33 PM CDT | Flash Flood Warning | LOT | Boone, DeKalb, LaSalle, Lee, McHenry, Ogle | 6 hr |
| May 13, 7:28 PM CDT | Flash Flood Warning | ILX | Tazewell | 3 hr |
| May 13, 8:50 PM CDT | Flash Flood Warning | ILX | Christian | 2 hr |
| May 22, 4:31 PM CDT | Flash Flood Warning | LOT | Livingston | 3 hr |
| May 22, 4:47 PM CDT | Flash Flood Warning | LOT | Ford, Iroquois | 5 hr |
| May 22, 5:08 PM CDT | Flash Flood Warning | LOT | Iroquois, Kankakee | 4 hr |
| May 22, 9:06 PM CDT | Flash Flood Warning | LOT | Boone, DeKalb, Lee, Ogle, Winnebago | 5 hr |
| May 25, 5:01 PM CDT | Flash Flood Warning | ILX | Cass, Fulton, Schuyler | 3 hr |
| May 25, 5:08 PM CDT | Flash Flood Warning | ILX | Christian, Sangamon | 3 hr |
| May 25, 5:34 PM CDT | Flash Flood Warning | DVN | Henderson, Mercer, Warren | 4 hr |
| May 25, 5:37 PM CDT | Flash Flood Warning | LSX | Brown | 4 hr |
| May 25, 6:19 PM CDT | Flash Flood Warning | ILX | Knox | 4 hr |
| May 25, 7:11 PM CDT | Flash Flood Warning | DVN | Bureau, Henry, Putnam | 4 hr |
| May 25, 7:36 PM CDT | Flash Flood Warning | DVN | Bureau | 3 hr |
| May 25, 7:46 PM CDT | Flash Flood Warning | LOT | DeKalb, LaSalle, Lee | 5 hr |
| May 25, 8:09 PM CDT | Flash Flood Warning | LOT | Kankakee, Will | 6 hr |
| May 28, 7:42 PM CDT | Flash Flood Warning | LOT | Will | 4 hr |
| May 29, 10:12 AM CDT | Flash Flood Warning | DVN | Bureau, Henry, Mercer | 4 hr |
| May 29, 10:19 AM CDT | Flash Flood Warning | ILX | Knox | 6 hr |
| May 29, 11:31 AM CDT | Flash Flood Warning | LOT | DeKalb, LaSalle, Lee | 6 hr |
| May 29, 12:38 PM CDT | Flash Flood Warning | LOT | Boone, Cook, DeKalb, DuPage, Kane, Lake and 4 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County6
- DeKalb County5
- Lee County5
- Johnson County4
- Pulaski County4
- Pope County4
- Union County3
- Williamson County3
- Hardin County3
- McHenry County3
- Boone County3
- LaSalle County3
- Ogle County3
- Bureau County3
- Edwards County2
- Gallatin County2
- Saline County2
- Wabash County2
- White County2
- Massac County2
- Lawrence County2
- Cook County2
- Kane County2
- Lake County2
- Christian County2
- Iroquois County2
- Kankakee County2
- Winnebago County2
- Mercer County2
- Knox County2
- Henry County2
- Will County2
- Franklin County1
- Jackson County1
- Jefferson County1
- Perry County1
- Hamilton County1
- Wayne County1
- Tazewell County1
- Livingston County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.