Alert archive / Illinois / Cook County / 2025
Weather alerts in Cook County, Illinois, August 2025
52 weather alerts in August 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 52
- Warnings
- 18
- Watches
- 4
- Advisories
- 17
- Busiest day
- August 17, 202514 alerts
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 | Lasted |
|---|---|---|---|
| Aug 9, 2:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 11, 9:43 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 11, 10:08 PM CDT | Special Weather Statement | LOT | 22 min |
| Aug 11, 11:51 PM CDT | Areal Flood Advisory | LOT | 114 min |
| Aug 12, 11:33 AM CDT | Flood Watch | LOT | 8 hr |
| Aug 12, 2:33 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 12, 3:05 PM CDT | Flash Flood Warning | LOT | 3 hr |
| Aug 12, 3:35 PM CDT | Special Weather Statement | LOT | 25 min |
| Aug 12, 3:36 PM CDT | Severe Thunderstorm Warning | LOT | 24 min |
| Aug 12, 3:39 PM CDT | Areal Flood Advisory | LOT | 4 hr |
| Aug 12, 5:04 PM CDT | Flash Flood Warning | LOT | 3 hr |
| Aug 12, 5:45 PM CDT | Areal Flood Advisory | LOT | 2 hr |
| Aug 12, 7:53 PM CDT | Areal Flood Advisory | LOT | 52 min |
| Aug 16, 11:56 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 1:56 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 16, 2:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 16, 3:48 PM CDT | Severe Thunderstorm Warning | LOT | 57 min |
| Aug 16, 4:10 PM CDT | Severe Thunderstorm Warning | LOT | 50 min |
| Aug 16, 4:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Aug 16, 5:00 PM CDT | Severe Thunderstorm Warning | LOT | 45 min |
| Aug 16, 5:34 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 16, 5:38 PM CDT | Severe Thunderstorm Warning | LOT | 52 min |
| Aug 16, 7:18 PM CDT | Special Weather Statement | LOT | 27 min |
| Aug 17, 12:54 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 17, 1:21 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 17, 1:41 AM CDT | Areal Flood Advisory | LOT | 2 hr |
| Aug 17, 2:11 AM CDT | Special Weather Statement | LOT | 34 min |
| Aug 17, 2:27 AM CDT | Severe Thunderstorm Warning | LOT | 48 min |
| Aug 17, 2:32 AM CDT | Flash Flood Warning | LOT | 118 min |
| Aug 17, 2:48 AM CDT | Severe Thunderstorm Warning | LOT | 27 min |
| Aug 17, 2:59 AM CDT | Severe Thunderstorm Warning | LOT | 46 min |
| Aug 17, 3:14 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 17, 3:36 AM CDT | Flash Flood Warning | LOT | 114 min |
| Aug 17, 4:30 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 17, 5:16 AM CDT | Beach Hazards Statement | LOT | 34 hr |
| Aug 17, 5:32 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| Aug 18, 11:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 18, 12:13 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 18, 2:21 PM CDT | Flood Watch | LOT | 13 hr |
| Aug 18, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 18, 4:09 PM CDT | Severe Thunderstorm Warning | LOT | 81 min |
| Aug 18, 5:37 PM CDT | Areal Flood Advisory | LOT | 4 hr |
| Aug 18, 6:30 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 18, 7:02 PM CDT | Flash Flood Warning | LOT | 70 min |
| Aug 18, 8:12 PM CDT | Flash Flood Warning | LOT | 2 hr |
| Aug 18, 8:26 PM CDT | Flash Flood Warning | LOT | 3 hr |
| Aug 18, 9:20 PM CDT | Areal Flood Advisory | LOT | 13 hr |
| Aug 18, 11:33 PM CDT | Areal Flood Warning | LOT | 13 hr |
| Aug 19, 12:03 AM CDT | Flash Flood Warning | LOT | 87 min |
| Aug 19, 4:18 AM CDT | Beach Hazards Statement | LOT | 57 hr |
| Aug 19, 10:53 AM CDT | Areal Flood Advisory | LOT | 6 hr |
| Aug 27, 2:44 PM CDT | Beach Hazards Statement | LOT | 47 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 9 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 8 |
| Flood Watch | 2 |
| Areal Flood Advisory | 17 |
| Coast and beach | |
| Beach Hazards Statement | 3 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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. Warning verification from the Mesonet's Cow. Rebuilt daily.