Alert archive / Illinois / Cook County
Weather alerts in Cook County, Illinois, 2015
124 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 124
- Warnings
- 49
- Watches
- 10
- Advisories
- 28
- Busiest month
- June31 alerts
- Busiest day
- August 3, 201510 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 |
|---|---|---|---|
| Feb 1, 7:43 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Mar 23, 4:58 AM CDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 4, 4:34 PM CDT | Fire Weather Watch | LOT | 12 hr |
| Apr 9, 12:17 AM CDT | Severe Thunderstorm Warning | LOT | 43 min |
| Apr 9, 12:40 AM CDT | Severe Thunderstorm Warning | LOT | 24 min |
| Apr 9, 10:22 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Apr 9, 1:48 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 9, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 9, 3:15 PM CDT | River Flood Warning | LOT | 42 hr |
| Apr 9, 3:15 PM CDT | River Flood Warning | LOT | 52 hr |
| Apr 9, 3:31 PM CDT | River Flood Advisory | LOT | 36 hr |
| Apr 9, 8:58 PM CDT | Severe Thunderstorm Warning | LOT | 32 min |
| Apr 9, 9:08 PM CDT | Severe Thunderstorm Warning | LOT | 37 min |
| Apr 9, 9:25 PM CDT | Severe Thunderstorm Warning | LOT | 35 min |
| Apr 10, 11:19 AM CDT | River Flood Advisory | LOT | 3 days |
| Apr 10, 11:19 AM CDT | River Flood Advisory | LOT | 36 hr |
| May 8, 12:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 8, 9:21 PM CDT | River Flood Advisory | LOT | 22 hr |
| May 26, 11:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 26, 1:11 PM CDT | Special Weather Statement | LOT | 34 min |
| Jun 8, 3:16 PM CDT | Severe Thunderstorm Warning | LOT | 44 min |
| Jun 8, 3:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 8, 4:00 PM CDT | Severe Thunderstorm Warning | LOT | 30 min |
| Jun 10, 4:58 PM CDT | Special Weather Statement | LOT | 32 min |
| Jun 10, 6:11 PM CDT | Flash Flood Warning | LOT | 4 hr |
| Jun 10, 6:21 PM CDT | Severe Thunderstorm Warning | LOT | 39 min |
| Jun 11, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 13, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 4:35 PM CDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Jun 13, 7:33 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jun 14, 5:50 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jun 14, 8:56 AM CDT | River Flood Warning | LOT | 18 hr |
| Jun 15, 4:24 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Jun 15, 4:50 PM CDT | Tornado Warning | LOT | 25 min |
| Jun 15, 6:09 PM CDT | Flash Flood Warning | LOT | 4 hr |
| Jun 15, 6:28 PM CDT | River Flood Advisory | LOT | 25 hr |
| Jun 15, 8:44 PM CDT | River Flood Warning | LOT | 25 hr |
| Jun 15, 8:44 PM CDT | River Flood Warning | LOT | 34 hr |
| Jun 15, 10:29 PM CDT | Areal Flood Warning | LOT | 12 hr |
| Jun 16, 2:19 AM CDT | River Flood Warning | LOT | 19 hr |
| Jun 16, 9:26 PM CDT | River Flood Advisory | LOT | 16 hr |
| Jun 18, 7:52 AM CDT | Areal Flood Advisory | LOT | 113 min |
| Jun 18, 7:53 AM CDT | Special Weather Statement | LOT | 52 min |
| Jun 20, 9:24 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jun 22, 9:14 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 22, 9:39 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 22, 11:00 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 7:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 22, 9:38 PM CDT | Severe Thunderstorm Warning | LOT | 37 min |
| Jun 22, 10:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 28, 6:34 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jul 6, 3:55 PM CDT | Special Weather Statement | LOT | 35 min |
| Jul 6, 9:06 PM CDT | Areal Flood Advisory | LOT | 5 hr |
| Jul 6, 10:32 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jul 13, 3:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 13, 4:14 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 5:41 AM CDT | Severe Thunderstorm Warning | LOT | 64 min |
| Jul 13, 6:22 AM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Jul 13, 6:28 AM CDT | Areal Flood Advisory | LOT | 4 hr |
| Jul 13, 7:55 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 13, 7:21 PM CDT | Severe Thunderstorm Warning | LOT | 24 min |
| Jul 13, 8:46 PM CDT | Severe Thunderstorm Warning | LOT | 29 min |
| Jul 13, 8:59 PM CDT | Severe Thunderstorm Warning | LOT | 31 min |
| Jul 13, 9:56 PM CDT | Severe Thunderstorm Warning | LOT | 33 min |
| Jul 13, 10:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 17, 5:20 PM CDT | Severe Thunderstorm Warning | LOT | 40 min |
| Jul 18, 12:58 AM CDT | Areal Flood Advisory | LOT | 4 hr |
| Jul 18, 1:31 PM CDT | Tornado Watch | SPC | 5 hr |
| Jul 18, 3:06 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jul 18, 3:19 PM CDT | Severe Thunderstorm Warning | LOT | 26 min |
| Jul 18, 3:47 PM CDT | Severe Thunderstorm Warning | LOT | 13 min |
| Aug 2, 2:21 PM CDT | Severe Thunderstorm Warning | LOT | 39 min |
| Aug 2, 2:35 PM CDT | Severe Thunderstorm Warning | LOT | 25 min |
| Aug 2, 2:58 PM CDT | Severe Thunderstorm Warning | LOT | 17 min |
| Aug 2, 3:01 PM CDT | Special Weather Statement | LOT | 29 min |
| Aug 2, 8:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 2, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 2, 9:42 PM CDT | Severe Thunderstorm Warning | LOT | 63 min |
| Aug 2, 10:00 PM CDT | Special Weather Statement | LOT | 45 min |
| Aug 2, 10:15 PM CDT | Severe Thunderstorm Warning | LOT | 45 min |
| Aug 2, 10:28 PM CDT | Severe Thunderstorm Warning | LOT | 32 min |
| Aug 2, 10:44 PM CDT | Severe Thunderstorm Warning | LOT | 31 min |
| Aug 2, 10:54 PM CDT | Severe Thunderstorm Warning | LOT | 66 min |
| Aug 2, 11:00 PM CDT | Severe Thunderstorm Warning | LOT | 9 min |
| Aug 2, 11:22 PM CDT | Severe Thunderstorm Warning | LOT | 53 min |
| Aug 15, 2:42 PM CDT | Special Weather Statement | LOT | 48 min |
| Aug 17, 8:40 PM CDT | Special Weather Statement | LOT | 35 min |
| Aug 17, 9:08 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 17, 9:34 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Aug 18, 3:41 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| Aug 18, 1:35 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 18, 7:59 PM CDT | Special Weather Statement | LOT | 46 min |
| Aug 18, 8:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 18, 8:11 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Aug 18, 8:20 PM CDT | Severe Thunderstorm Warning | LOT | 25 min |
| Sep 5, 8:16 AM CDT | Special Weather Statement | LOT | 44 min |
| Sep 8, 1:08 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Sep 8, 1:14 PM CDT | Special Weather Statement | LOT | 61 min |
| Sep 12, 10:55 AM CDT | Special Weather Statement | LOT | 80 min |
| Sep 12, 12:17 PM CDT | Special Weather Statement | LOT | 88 min |
| Sep 18, 4:44 PM CDT | Tornado Warning | LOT | 31 min |
| Sep 18, 5:32 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Sep 18, 6:51 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Sep 18, 11:54 PM CDT | Severe Thunderstorm Warning | LOT | 66 min |
| Sep 19, 12:17 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Sep 19, 2:34 PM CDT | River Flood Advisory | LOT | 36 hr |
| Oct 19, 3:23 AM CDT | Red Flag Warning | LOT | 16 hr |
| Nov 11, 6:16 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 11, 7:16 PM CST | Special Weather Statement | LOT | 29 min |
| Nov 11, 9:03 PM CST | Special Weather Statement | LOT | 72 min |
| Nov 21, 6:28 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 21, 6:32 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 27, 9:42 AM CST | River Flood Advisory | LOT | 3 days |
| Dec 1, 11:13 AM CST | River Flood Advisory | LOT | 55 hr |
| Dec 23, 9:41 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 28, 5:26 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 28, 10:23 AM CST | River Flood Advisory | LOT | 36 hr |
| Dec 28, 11:49 AM CST | River Flood Advisory | LOT | 4 days |
| Dec 28, 11:49 AM CST | River Flood Advisory | LOT | 3 days |
| Dec 28, 12:13 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 28, 5:27 PM CST | Areal Flood Advisory | LOT | 12 hr |
| Dec 28, 7:58 PM CST | River Flood Warning | LOT | 24 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 archive20142016
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.