Alert archive / Illinois / Cook County / 2021
Weather alerts in Cook County, Illinois, October 2021
16 weather alerts in October 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 16
- Warnings
- 2
- Watches
- 3
- Advisories
- 9
- Busiest day
- October 11, 20214 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 |
|---|---|---|---|
| Oct 3, 3:26 PM CDT | Areal Flood Advisory | LOT | 5 hr |
| Oct 8, 5:52 AM CDT | Dense Fog Advisory | LOT | 3 hr |
| Oct 8, 9:45 PM CDT | Dense Fog Advisory | LOT | 6 hr |
| Oct 11, 12:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 11, 3:10 PM CDT | Tornado Watch | SPC | 6 hr |
| Oct 11, 5:47 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Oct 11, 6:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Oct 13, 12:21 AM CDT | Dense Fog Advisory | LOT | 8 hr |
| Oct 22, 1:29 PM CDT | Frost Advisory | LOT | 19 hr |
| Oct 23, 12:46 PM CDT | Flash Flood Watch | LOT | 38 hr |
| Oct 23, 2:51 PM CDT | Lakeshore Flood Advisory | LOT | 56 hr |
| Oct 23, 9:57 PM CDT | River Flood Watch | LOT | 12 hr |
| Oct 24, 3:10 AM CDT | Wind Advisory | LOT | 36 hr |
| Oct 24, 10:08 AM CDT | River Flood Warning | LOT | 53 hr |
| Oct 25, 6:02 AM CDT | River Flood Warning | LOT | 26 hr |
| Oct 28, 9:08 PM CDT | Lakeshore Flood Advisory | LOT | 34 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 | |
| Tornado Watch | 1 |
| Mesoscale Discussion | 2 |
| Flooding | |
| River Flood Warning | 2 |
| Flash Flood Watch | 1 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Lakeshore Flood Advisory | 2 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.