Alert archive / Illinois / Cook County / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Cook County, Illinois, 2011
45 severe thunderstorm warnings in 2011. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.
Cook County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 45
- Busiest month
- May13 severe thunderstorm warnings
- Busiest day
- May 11, 20114 severe thunderstorm 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 | Lasted |
|---|---|---|---|
| Mar 20, 7:54 PM CDT | Severe Thunderstorm Warning | LOT | 21 min |
| Apr 3, 11:09 PM CDT | Severe Thunderstorm Warning | LOT | 42 min |
| May 11, 4:06 PM CDT | Severe Thunderstorm Warning | LOT | 54 min |
| May 11, 4:39 PM CDT | Severe Thunderstorm Warning | LOT | 36 min |
| May 11, 5:11 PM CDT | Severe Thunderstorm Warning | LOT | 49 min |
| May 11, 5:52 PM CDT | Severe Thunderstorm Warning | LOT | 27 min |
| May 11, 7:04 PM CDT | Severe Thunderstorm Warning | LOT | 56 min |
| May 11, 7:57 PM CDT | Severe Thunderstorm Warning | LOT | 19 min |
| May 22, 3:16 PM CDT | Severe Thunderstorm Warning | LOT | 19 min |
| May 22, 3:21 PM CDT | Severe Thunderstorm Warning | LOT | 54 min |
| May 22, 3:23 PM CDT | Severe Thunderstorm Warning | LOT | 38 min |
| May 22, 8:51 PM CDT | Severe Thunderstorm Warning | LOT | 26 min |
| May 29, 11:23 AM CDT | Severe Thunderstorm Warning | LOT | 67 min |
| May 29, 12:43 PM CDT | Severe Thunderstorm Warning | LOT | 77 min |
| May 31, 2:20 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jun 4, 3:34 PM CDT | Severe Thunderstorm Warning | LOT | 56 min |
| Jun 4, 3:44 PM CDT | Severe Thunderstorm Warning | LOT | 48 min |
| Jun 4, 4:07 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jun 8, 11:01 PM CDT | Severe Thunderstorm Warning | LOT | 59 min |
| Jun 9, 2:33 AM CDT | Severe Thunderstorm Warning | LOT | 57 min |
| Jun 9, 3:13 AM CDT | Severe Thunderstorm Warning | LOT | 37 min |
| Jun 21, 8:22 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jun 30, 8:35 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jun 30, 8:41 PM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Jun 30, 9:35 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jul 1, 1:14 PM CDT | Severe Thunderstorm Warning | LOT | 42 min |
| Jul 11, 7:03 AM CDT | Severe Thunderstorm Warning | LOT | 57 min |
| Jul 11, 7:44 AM CDT | Severe Thunderstorm Warning | LOT | 46 min |
| Jul 11, 8:22 AM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jul 23, 12:53 AM CDT | Severe Thunderstorm Warning | LOT | 54 min |
| Jul 27, 10:10 PM CDT | Severe Thunderstorm Warning | LOT | 80 min |
| Jul 28, 12:11 AM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Jul 28, 11:55 PM CDT | Severe Thunderstorm Warning | LOT | 35 min |
| Jul 29, 1:41 AM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Aug 2, 5:56 PM CDT | Severe Thunderstorm Warning | LOT | 70 min |
| Aug 2, 8:39 PM CDT | Severe Thunderstorm Warning | LOT | 66 min |
| Aug 2, 9:11 PM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Aug 2, 9:18 PM CDT | Severe Thunderstorm Warning | LOT | 72 min |
| Aug 2, 10:07 PM CDT | Severe Thunderstorm Warning | LOT | 68 min |
| Aug 13, 12:55 PM CDT | Severe Thunderstorm Warning | LOT | 50 min |
| Aug 13, 2:12 PM CDT | Severe Thunderstorm Warning | LOT | 63 min |
| Aug 20, 9:25 AM CDT | Severe Thunderstorm Warning | LOT | 65 min |
| Sep 3, 2:04 PM CDT | Severe Thunderstorm Warning | LOT | 56 min |
| Sep 3, 2:54 PM CDT | Severe Thunderstorm Warning | LOT | 36 min |
| Sep 3, 3:22 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.