Alert archive / Illinois / McHenry County
Weather alerts in McHenry County, Illinois, 2016
92 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
McHenry County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 92
- Warnings
- 20
- Watches
- 13
- Advisories
- 35
- Busiest month
- July26 alerts
- Busiest day
- July 23, 201610 alerts
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 |
|---|---|---|---|
| Jan 8, 2:16 PM CST | Dense Fog Advisory | LOT | 13 hr |
| Jan 16, 2:39 PM CST | Wind Chill Advisory | LOT | 45 hr |
| Feb 1, 5:50 PM CST | Dense Fog Advisory | LOT | 8 hr |
| Feb 2, 9:55 PM CST | Dense Fog Advisory | LOT | 7 hr |
| Feb 12, 3:53 AM CST | Wind Chill Advisory | LOT | 29 hr |
| Feb 18, 2:46 PM CST | Wind Advisory | LOT | 27 hr |
| Feb 19, 9:41 AM CST | High Wind Warning | LOT | 8 hr |
| Feb 29, 3:47 AM CST | Winter Storm Warning | LOT | 24 hr |
| Feb 29, 3:47 AM CST | Winter Weather Advisory | LOT | 29 hr |
| Feb 29, 8:49 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Mar 15, 3:50 AM CDT | High Wind Watch | LOT | 24 hr |
| Mar 15, 3:06 PM CDT | Wind Advisory | LOT | 29 hr |
| Mar 15, 8:40 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 16, 3:58 AM CDT | High Wind Warning | LOT | 7 hr |
| Mar 31, 10:46 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Mar 31, 1:07 PM CDT | Special Weather Statement | LOT | 23 min |
| Apr 1, 2:29 PM CDT | Wind Advisory | LOT | 29 hr |
| Apr 22, 3:26 AM CDT | Frost Advisory | LOT | 29 hr |
| Apr 25, 1:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 25, 2:17 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 25, 4:14 PM CDT | Severe Thunderstorm Warning | LOT | 35 min |
| Apr 25, 6:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 25, 7:12 PM CDT | Severe Thunderstorm Warning | LOT | 33 min |
| May 10, 10:45 PM CDT | Dense Fog Advisory | LOT | 11 hr |
| May 14, 3:05 AM CDT | Frost Advisory | LOT | 29 hr |
| May 17, 7:07 PM CDT | Frost Advisory | LOT | 13 hr |
| May 28, 1:37 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 28, 8:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 9, 7:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 1:00 AM CDT | Areal Flood Advisory | LOT | 5 hr |
| Jun 14, 8:54 PM CDT | Flash Flood Watch | LOT | 8 hr |
| Jun 15, 12:12 AM CDT | Severe Thunderstorm Warning | LOT | 48 min |
| Jun 21, 3:35 PM CDT | Flash Flood Watch | LOT | 33 hr |
| Jun 22, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 23, 5:05 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Jul 6, 1:20 AM CDT | Severe Thunderstorm Warning | LOT | 55 min |
| Jul 6, 1:27 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 1:50 AM CDT | Severe Thunderstorm Warning | LOT | 70 min |
| Jul 6, 1:55 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 4:20 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Jul 17, 7:00 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 3:19 PM CDT | Excessive Heat Watch | LOT | 61 hr |
| Jul 20, 12:47 PM CDT | Excessive Heat Warning | LOT | 3 days |
| Jul 20, 12:47 PM CDT | Heat Advisory | LOT | 3 days |
| Jul 21, 6:18 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 6:58 PM CDT | Severe Thunderstorm Warning | LOT | 62 min |
| Jul 21, 7:42 PM CDT | Severe Thunderstorm Warning | LOT | 63 min |
| Jul 21, 8:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 23, 1:06 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 2:50 PM CDT | Mesoscale Discussion | SPC | 25 min |
| Jul 23, 3:23 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 3:55 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Jul 23, 4:13 PM CDT | Severe Thunderstorm Warning | LOT | 47 min |
| Jul 23, 4:58 PM CDT | Severe Thunderstorm Warning | LOT | 47 min |
| Jul 23, 5:00 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Jul 23, 5:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 5:28 PM CDT | Severe Thunderstorm Warning | LOT | 47 min |
| Jul 23, 5:44 PM CDT | Areal Flood Advisory | LOT | 5 hr |
| Jul 23, 10:59 PM CDT | Areal Flood Warning | LOT | 12 hr |
| Jul 24, 2:25 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 28, 11:16 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 8:41 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Aug 4, 8:59 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 4, 9:46 PM CDT | Severe Thunderstorm Warning | LOT | 44 min |
| Aug 11, 8:06 PM CDT | Flash Flood Watch | LOT | 28 hr |
| Aug 29, 4:35 PM CDT | Areal Flood Advisory | LOT | 3 hr |
| Aug 29, 5:08 PM CDT | Flash Flood Warning | LOT | 6 hr |
| Aug 29, 10:00 PM CDT | Areal Flood Warning | LOT | 12 hr |
| Sep 7, 1:00 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 7, 3:36 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 4:52 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Sep 21, 9:53 AM CDT | Special Weather Statement | LOT | 22 min |
| Sep 25, 2:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 6, 8:05 PM CDT | Special Weather Statement | LOT | 25 min |
| Oct 13, 2:34 PM CDT | Frost Advisory | LOT | 17 hr |
| Oct 20, 2:09 PM CDT | Frost Advisory | LOT | 13 hr |
| Nov 3, 5:45 AM CDT | Dense Fog Advisory | LOT | 4 hr |
| Nov 4, 3:38 AM CDT | Dense Fog Advisory | LOT | 7 hr |
| Nov 18, 10:29 AM CST | Wind Advisory | LOT | 29 hr |
| Nov 18, 10:55 AM CST | Special Weather Statement | LOT | 20 min |
| Nov 27, 9:21 AM CST | Dense Fog Advisory | LOT | 4 hr |
| Dec 3, 3:07 PM CST | Winter Weather Advisory | LOT | 27 hr |
| Dec 5, 9:10 AM CST | Dense Fog Advisory | LOT | 4 hr |
| Dec 6, 5:46 AM CST | Dense Fog Advisory | LOT | 5 hr |
| Dec 9, 10:28 AM CST | Winter Storm Watch | LOT | 17 hr |
| Dec 10, 3:50 AM CST | Winter Weather Advisory | LOT | 7 hr |
| Dec 10, 10:55 AM CST | Winter Storm Warning | LOT | 37 hr |
| Dec 10, 6:59 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 14, 3:24 AM CST | Wind Chill Advisory | LOT | 31 hr |
| Dec 14, 4:08 PM CST | Winter Weather Advisory | LOT | 6 hr |
| Dec 15, 3:17 PM CST | Winter Weather Advisory | LOT | 63 hr |
| Dec 16, 8:27 PM CST | Wind Chill Advisory | LOT | 62 hr |
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 | 11 |
| Severe Thunderstorm Watch | 7 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 1 |
| Cold | |
| Frost Advisory | 5 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.