Alert archive / Illinois / McHenry County / 2026
Weather alerts in McHenry County, Illinois, June 2026
23 weather alerts in June 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 23
- Warnings
- 9
- Watches
- 5
- Advisories
- 4
- Busiest day
- June 11, 20266 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 |
|---|---|---|---|
| Jun 10, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 10, 1:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 2:09 PM CDT | Severe Thunderstorm Warning | LOT | 66 min |
| Jun 10, 2:50 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jun 11, 10:05 AM CDT | Flood Watch | LOT | 11 hr |
| Jun 11, 1:57 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 11, 5:39 PM CDT | Severe Thunderstorm Warning | LOT | 51 min |
| Jun 11, 6:10 PM CDT | Severe Thunderstorm Warning | LOT | 65 min |
| Jun 11, 6:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 11, 6:27 PM CDT | Flash Flood Warning | LOT | 3 hr |
| Jun 11, 9:06 PM CDT | Areal Flood Advisory | LOT | 22 hr |
| Jun 17, 2:20 AM CDT | Flood Watch | LOT | 15 hr |
| Jun 17, 9:17 AM CDT | Wind Advisory | LOT | 5 hr |
| Jun 17, 8:31 PM CDT | Severe Thunderstorm Warning | LOT | 44 min |
| Jun 24, 12:44 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 24, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 4:54 PM CDT | Severe Thunderstorm Warning | LOT | 51 min |
| Jun 24, 5:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 24, 5:35 PM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jun 24, 8:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 28, 2:47 AM CDT | Heat Advisory | LOT | 47 hr |
| Jun 28, 11:18 AM CDT | Extreme Heat Warning | LOT | 5 days |
| Jun 28, 4:41 PM CDT | Wind Advisory | LOT | 108 min |
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 | 7 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 5 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 1 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.