Alert archive / Illinois / Cook County
Weather alerts in Cook County, Illinois, 2011
169 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cook County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 169
- Warnings
- 70
- Watches
- 15
- Advisories
- 31
- Busiest month
- July46 alerts
- Busiest day
- June 9, 201114 alerts
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 |
|---|---|---|---|
| Jan 16, 12:03 PM CST | Special Weather Statement | LOT | 57 min |
| Feb 1, 3:36 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 2, 2:33 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 9:20 AM CST | Special Weather Statement | LOT | 40 min |
| Feb 17, 9:35 AM CST | River Flood Advisory | LOT | 34 hr |
| Feb 20, 4:35 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 20, 8:46 PM CST | River Flood Advisory | LOT | 51 hr |
| Feb 27, 11:03 AM CST | River Flood Advisory | LOT | 10 hr |
| Feb 27, 8:49 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 27, 9:20 PM CST | Areal Flood Advisory | LOT | 5 hr |
| Mar 4, 10:54 PM CST | River Flood Advisory | LOT | 23 hr |
| Mar 20, 3:07 PM CDT | Areal Flood Advisory | LOT | 7 hr |
| Mar 20, 7:54 PM CDT | Severe Thunderstorm Warning | LOT | 21 min |
| Apr 3, 8:54 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 3, 10:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 3, 10:46 PM CDT | Special Weather Statement | LOT | 29 min |
| Apr 3, 11:09 PM CDT | Severe Thunderstorm Warning | LOT | 42 min |
| Apr 4, 12:30 AM CDT | Special Weather Statement | LOT | 60 min |
| Apr 4, 1:53 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 10, 11:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 19, 7:23 PM CDT | Special Weather Statement | LOT | 22 min |
| Apr 19, 7:59 PM CDT | Areal Flood Advisory | LOT | 4 hr |
| Apr 20, 11:02 AM CDT | River Flood Advisory | LOT | 38 hr |
| Apr 22, 11:16 AM CDT | River Flood Advisory | LOT | 35 hr |
| Apr 26, 10:15 AM CDT | River Flood Advisory | LOT | 57 hr |
| Apr 26, 10:15 AM CDT | River Flood Advisory | LOT | 3 days |
| Apr 27, 2:35 PM CDT | River Flood Advisory | LOT | 8 hr |
| May 11, 4:06 PM CDT | Severe Thunderstorm Warning | LOT | 54 min |
| May 11, 4:36 PM CDT | Areal Flood Advisory | LOT | 32 min |
| May 11, 4:39 PM CDT | Severe Thunderstorm Warning | LOT | 36 min |
| May 11, 5:02 PM CDT | Flash Flood Warning | LOT | 4 hr |
| 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, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| 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, 1:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 22, 2:04 PM CDT | Tornado Watch | SPC | 9 hr |
| 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 25, 7:49 AM CDT | Special Weather Statement | LOT | 41 min |
| May 25, 9:30 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| May 25, 9:22 PM CDT | River Flood Advisory | LOT | 13 hr |
| May 26, 8:54 AM CDT | River Flood Warning | LOT | 21 hr |
| May 26, 10:25 AM CDT | River Flood Warning | LOT | 23 hr |
| May 26, 10:51 AM CDT | River Flood Advisory | LOT | 10 hr |
| May 28, 5:05 PM CDT | Areal Flood Advisory | LOT | 4 hr |
| May 29, 8:39 AM CDT | Mesoscale Discussion | SPC | 66 min |
| May 29, 8:53 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 29, 10:34 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| May 29, 11:23 AM CDT | Severe Thunderstorm Warning | LOT | 67 min |
| May 29, 11:51 AM CDT | Areal Flood Advisory | LOT | 4 hr |
| May 29, 11:59 AM CDT | Mesoscale Discussion | SPC | 61 min |
| May 29, 12:38 PM CDT | Flash Flood Warning | LOT | 5 hr |
| May 29, 12:43 PM CDT | Severe Thunderstorm Warning | LOT | 77 min |
| May 29, 4:01 PM CDT | River Flood Advisory | LOT | 4 hr |
| May 29, 4:21 PM CDT | River Flood Warning | LOT | 29 hr |
| May 29, 5:23 PM CDT | Areal Flood Warning | LOT | 12 hr |
| May 29, 8:10 PM CDT | River Flood Warning | LOT | 47 hr |
| May 31, 12:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 31, 2:20 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| May 31, 2:33 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 1:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 4, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 3:25 PM CDT | Special Weather Statement | LOT | 20 min |
| Jun 4, 3:28 PM CDT | Special Weather Statement | LOT | 17 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 4, 4:26 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jun 6, 6:15 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 8, 11:08 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 8, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 8, 8:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 8, 11:01 PM CDT | Severe Thunderstorm Warning | LOT | 59 min |
| Jun 8, 11:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 8, 11:55 PM CDT | Areal Flood Advisory | LOT | 6 hr |
| 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 9, 5:33 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Jun 9, 5:46 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 9, 6:40 AM CDT | Areal Flood Advisory | LOT | 5 hr |
| Jun 9, 10:28 AM CDT | River Flood Warning | LOT | 43 hr |
| Jun 9, 11:26 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Jun 9, 2:14 PM CDT | River Flood Advisory | LOT | 32 hr |
| Jun 9, 3:18 PM CDT | River Flood Advisory | LOT | 31 hr |
| Jun 9, 5:52 PM CDT | Areal Flood Warning | LOT | 24 hr |
| Jun 15, 6:28 PM CDT | Tornado Warning | LOT | 32 min |
| Jun 21, 11:45 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 21, 4:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 21, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 21, 7:57 PM CDT | Tornado Warning | LOT | 63 min |
| Jun 21, 8:22 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jun 21, 8:38 PM CDT | Tornado Warning | LOT | 52 min |
| Jun 30, 8:07 PM CDT | Mesoscale Discussion | SPC | 23 min |
| Jun 30, 8:15 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| 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 2, 1:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 11, 5:07 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 11, 5:37 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 7:03 AM CDT | Severe Thunderstorm Warning | LOT | 57 min |
| Jul 11, 7:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 11, 7:44 AM CDT | Severe Thunderstorm Warning | LOT | 46 min |
| Jul 11, 7:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 11, 8:22 AM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jul 19, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Jul 22, 9:45 AM CDT | Special Weather Statement | LOT | 60 min |
| Jul 23, 12:36 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Jul 23, 12:53 AM CDT | Severe Thunderstorm Warning | LOT | 54 min |
| Jul 23, 1:19 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Jul 23, 2:37 AM CDT | Flash Flood Warning | LOT | 5 hr |
| Jul 23, 5:21 AM CDT | River Flood Warning | LOT | 38 hr |
| Jul 23, 5:21 AM CDT | River Flood Warning | LOT | 3 days |
| Jul 23, 6:30 AM CDT | Flash Flood Warning | LOT | 5 hr |
| Jul 23, 7:30 AM CDT | Flash Flood Warning | LOT | 4 hr |
| Jul 23, 11:13 AM CDT | Areal Flood Warning | LOT | 19 hr |
| Jul 23, 11:27 PM CDT | Special Weather Statement | LOT | 63 min |
| Jul 23, 11:43 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Jul 24, 8:26 AM CDT | Flash Flood Warning | LOT | 106 min |
| Jul 24, 10:07 AM CDT | Areal Flood Warning | LOT | 6 hr |
| Jul 27, 8:43 AM CDT | Special Weather Statement | LOT | 62 min |
| Jul 27, 9:40 AM CDT | Special Weather Statement | LOT | 50 min |
| Jul 27, 7:43 PM CDT | Tornado Watch | SPC | 5 hr |
| Jul 27, 9:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 27, 10:10 PM CDT | Severe Thunderstorm Warning | LOT | 80 min |
| Jul 27, 11:24 PM CDT | Special Weather Statement | LOT | 36 min |
| Jul 28, 12:00 AM CDT | Special Weather Statement | LOT | 60 min |
| Jul 28, 12:11 AM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Jul 28, 12:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 28, 10:41 PM CDT | Special Weather Statement | LOT | 34 min |
| Jul 28, 11:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 28, 11:55 PM CDT | Severe Thunderstorm Warning | LOT | 35 min |
| Jul 29, 1:08 AM CDT | Special Weather Statement | LOT | 52 min |
| Jul 29, 1:33 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| Jul 29, 1:41 AM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Jul 29, 5:37 AM CDT | River Flood Advisory | LOT | 5 hr |
| Jul 29, 5:37 AM CDT | River Flood Advisory | LOT | 39 hr |
| Aug 2, 6:19 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 2, 12:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 2, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 2, 5:56 PM CDT | Severe Thunderstorm Warning | LOT | 70 min |
| Aug 2, 8:34 PM CDT | Mesoscale Discussion | SPC | 86 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 7, 9:08 AM CDT | Special Weather Statement | LOT | 67 min |
| Aug 13, 11:45 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 13, 12:12 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 13, 12:55 PM CDT | Severe Thunderstorm Warning | LOT | 50 min |
| Aug 13, 1:52 PM CDT | Special Weather Statement | LOT | 38 min |
| Aug 13, 2:12 PM CDT | Severe Thunderstorm Warning | LOT | 63 min |
| Aug 19, 5:13 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 20, 9:25 AM CDT | Severe Thunderstorm Warning | LOT | 65 min |
| Aug 23, 9:33 AM CDT | Special Weather Statement | LOT | 42 min |
| Sep 3, 12:24 PM CDT | Mesoscale Discussion | SPC | 66 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, 3:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 3, 3:07 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Sep 3, 3:22 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Sep 3, 5:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Sep 29, 5:45 PM CDT | Special Weather Statement | LOT | 60 min |
| Dec 14, 2:31 PM CST | River Flood Advisory | LOT | 19 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
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.