Alert archive / Illinois / McHenry County / 2023
Weather alerts in McHenry County, Illinois, August 2023
13 weather alerts in August 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 13
- Warnings
- 3
- Watches
- 3
- Advisories
- 4
- Busiest day
- August 17, 20232 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 3, 4:18 AM CDT | Dense Fog Advisory | LOT | 5 hr |
| Aug 9, 3:46 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Aug 10, 1:04 AM CDT | Dense Fog Advisory | LOT | 8 hr |
| Aug 11, 11:23 PM CDT | Severe Thunderstorm Warning | LOT | 38 min |
| Aug 14, 3:20 AM CDT | Flood Watch | LOT | 18 hr |
| Aug 17, 4:41 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 17, 5:22 AM CDT | Severe Thunderstorm Warning | LOT | 23 min |
| Aug 19, 2:47 AM CDT | Heat Advisory | LOT | 41 hr |
| Aug 21, 2:47 AM CDT | Excessive Heat Watch | LOT | 48 hr |
| Aug 22, 2:59 AM CDT | Excessive Heat Warning | LOT | 65 hr |
| Aug 24, 2:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 24, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 24, 8:08 PM CDT | Special Weather Statement | LOT | 37 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 | 2 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 1 |
| Flooding | |
| Flood Watch | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.