Alert archive / Illinois / Storm Warnings
Storm Warnings in Illinois, 2009
4 storm warnings in 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 storm warnings reaches back to 2005.
Storm Warnings by county
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Storm Warnings
- 4
- Busiest month
- March1 storm warnings
- Busiest day
- March 10, 20091 storm warnings
Over time
By month
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 |
|---|---|---|---|---|
| Mar 10, 3:42 AM CDT | Storm Warning | LOT | 29 hr | |
| Sep 27, 4:09 AM CDT | Storm Warning | LOT | 42 hr | |
| Oct 6, 9:35 PM CDT | Storm Warning | LOT | 6 hr | |
| Dec 8, 2:45 PM CST | Storm Warning | LOT | 30 hr |
The busiest days
Days with the most alerts issued, by UTC date.
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.