Alert archive / Illinois / McHenry County / 2019
Weather alerts in McHenry County, Illinois, September 2019
27 weather alerts in September 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 27
- Warnings
- 9
- Watches
- 3
- Advisories
- 7
- Busiest day
- September 12, 201911 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 |
|---|---|---|---|
| Sep 2, 4:47 AM CDT | Dense Fog Advisory | LOT | 3 hr |
| Sep 3, 3:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 11, 12:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 11, 3:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 11, 6:53 PM CDT | Tornado Warning | LOT | 52 min |
| Sep 11, 9:23 PM CDT | Special Weather Statement | LOT | 67 min |
| Sep 11, 9:30 PM CDT | Severe Thunderstorm Warning | LOT | 49 min |
| Sep 11, 10:04 PM CDT | Special Weather Statement | LOT | 41 min |
| Sep 11, 10:21 PM CDT | Severe Thunderstorm Warning | LOT | 33 min |
| Sep 12, 1:00 AM CDT | Areal Flood Advisory | LOT | 4 hr |
| Sep 12, 2:53 AM CDT | Flash Flood Warning | LOT | 3 hr |
| Sep 12, 5:07 AM CDT | River Flood Warning | LOT | 16 days |
| Sep 12, 5:43 AM CDT | Areal Flood Warning | LOT | 5 hr |
| Sep 12, 1:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Sep 12, 6:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 12, 6:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 12, 10:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 12:11 AM CDT | Areal Flood Advisory | LOT | 3 hr |
| Sep 13, 12:38 AM CDT | Flash Flood Warning | LOT | 6 hr |
| Sep 13, 6:28 AM CDT | Areal Flood Warning | LOT | 3 hr |
| Sep 14, 2:47 PM CDT | Flash Flood Watch | LOT | 19 hr |
| Sep 15, 9:12 PM CDT | Dense Fog Advisory | LOT | 13 hr |
| Sep 21, 3:35 AM CDT | Flash Flood Watch | LOT | 41 hr |
| Sep 27, 9:39 PM CDT | River Flood Advisory | LOT | 18 hr |
| Sep 28, 3:10 PM CDT | River Flood Warning | LOT | 46 hr |
| Sep 29, 8:06 PM CDT | River Flood Advisory | LOT | 14 hr |
| Sep 30, 1:40 AM CDT | Dense Fog Advisory | LOT | 7 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.