Alert archive / Illinois / McHenry County / Tornado Warnings
Tornado Warnings in McHenry County, Illinois, 2026
3 tornado warnings in 2026. An alert counts here when it covered this county. The archive of tornado warnings reaches back to 1986.
McHenry County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Tornado Warnings
- 3
- Busiest month
- April3 tornado warnings
- Busiest day
- April 18, 20262 tornado warnings
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 |
|---|---|---|---|
| Apr 2, 7:40 PM CDT | Tornado Warning | LOT | 35 min |
| Apr 17, 7:28 PM CDT | Tornado Warning | LOT | 47 min |
| Apr 17, 8:36 PM CDT | Tornado Warning | LOT | 39 min |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.