Alert archive / Illinois / McHenry County / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in McHenry County, Illinois, August 2021
5 severe thunderstorm warnings in August 2021. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.
- Severe Thunderstorm Warnings
- 5
- Busiest day
- August 10, 20212 severe thunderstorm warnings
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 10, 6:16 PM CDT | Severe Thunderstorm Warning | LOT | 74 min |
| Aug 10, 6:34 PM CDT | Severe Thunderstorm Warning | LOT | 86 min |
| Aug 11, 9:46 AM CDT | Severe Thunderstorm Warning | LOT | 59 min |
| Aug 24, 6:09 PM CDT | Severe Thunderstorm Warning | LOT | 66 min |
| Aug 24, 7:08 PM CDT | Severe Thunderstorm Warning | LOT | 67 min |
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. Rebuilt daily.