Alert archive / Illinois / McHenry County / 2011
Weather alerts in McHenry County, Illinois, April 2011
9 weather alerts in April 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 9
- Warnings
- 1
- Watches
- 2
- Advisories
- 4
- Busiest day
- April 4, 20113 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 |
|---|---|---|---|
| Apr 3, 8:54 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 3, 10:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 4, 1:53 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 7, 5:13 AM CDT | Dense Fog Advisory | LOT | 7 hr |
| Apr 10, 6:05 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 15, 4:12 AM CDT | Wind Advisory | LOT | 16 hr |
| Apr 26, 10:15 AM CDT | River Flood Advisory | LOT | 58 hr |
| Apr 28, 8:15 PM CDT | Frost Advisory | LOT | 12 hr |
| Apr 28, 8:23 PM CDT | River Flood Warning | LOT | 4 days |
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 Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 2 |
| Flooding | |
| River Flood Warning | 1 |
| River Flood Advisory | 1 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.