Alert archive / Illinois / McHenry County

Weather alerts in McHenry County, Illinois, 2017

152 weather alerts in 2017, 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 2017. Tap one for its archive.

Alerts: 152
Warnings: 38
Watches: 17
Advisories: 46
Busiest month: July37 alerts
Busiest day: June 14, 201712 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 2, 6:30 PM CST	Dense Fog Advisory	LOT	17 hr
Jan 10, 3:38 AM CST	Wind Advisory	LOT	17 hr
Jan 10, 11:55 AM CST	High Wind Warning	LOT	9 hr
Jan 11, 10:02 AM CST	Freezing Rain Advisory	LOT	23 hr
Jan 15, 2:56 PM CST	Winter Weather Advisory	LOT	21 hr
Jan 16, 12:13 PM CST	Dense Fog Advisory	LOT	17 hr
Jan 20, 4:29 PM CST	Dense Fog Advisory	LOT	19 hr
Jan 21, 9:08 PM CST	Dense Fog Advisory	LOT	15 hr
Feb 6, 7:07 PM CST	Dense Fog Advisory	LOT	19 hr
Feb 21, 11:34 PM CST	Dense Fog Advisory	LOT	11 hr
Feb 23, 11:57 PM CST	Special Weather Statement	LOT	33 min
Feb 24, 4:16 AM CST	Special Weather Statement	LOT	44 min
Feb 28, 2:57 PM CST	Tornado Watch	SPC	7 hr
Feb 28, 5:24 PM CST	Mesoscale Discussion	SPC	96 min
Feb 28, 5:51 PM CST	Severe Thunderstorm Warning	LOT	39 min
Mar 6, 10:15 PM CST	Mesoscale Discussion	SPC	60 min
Mar 6, 10:35 PM CST	Severe Thunderstorm Watch	SPC	4 hr
Mar 6, 11:54 PM CST	Special Weather Statement	LOT	51 min
Mar 7, 7:38 PM CST	Wind Advisory	LOT	22 hr
Mar 8, 9:35 AM CST	Red Flag Warning	LOT	7 hr
Mar 8, 11:23 AM CST	High Wind Warning	LOT	6 hr
Mar 8, 11:23 AM CST	Wind Advisory	LOT	3 hr
Mar 11, 3:43 PM CST	Winter Weather Advisory	LOT	44 hr
Mar 23, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Mar 23, 6:46 PM CDT	Special Weather Statement	LOT	44 min
Mar 28, 7:17 PM CDT	Dense Fog Advisory	LOT	14 hr
Mar 30, 1:08 PM CDT	Areal Flood Advisory	LOT	6 hr
Mar 30, 4:00 PM CDT	River Flood Advisory	LOT	4 days
Mar 30, 7:01 PM CDT	Areal Flood Advisory	LOT	5 hr
Apr 3, 10:04 AM CDT	River Flood Advisory	LOT	6 days
Apr 4, 9:32 PM CDT	River Flood Advisory	LOT	7 days
Apr 5, 9:52 AM CDT	River Flood Warning	LOT	5 days
Apr 10, 4:38 AM CDT	Special Weather Statement	LOT	22 min
Apr 10, 11:57 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 10, 1:48 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 10, 2:55 PM CDT	Special Weather Statement	LOT	50 min
Apr 10, 3:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 10, 4:18 PM CDT	Severe Thunderstorm Warning	LOT	42 min
Apr 10, 9:36 PM CDT	River Flood Advisory	LOT	4 days
Apr 15, 11:17 PM CDT	Special Weather Statement	LOT	43 min
Apr 15, 11:58 PM CDT	Areal Flood Advisory	LOT	6 hr
Apr 16, 10:31 AM CDT	River Flood Advisory	LOT	6 days
Apr 28, 11:51 AM CDT	River Flood Watch	LOT	48 hr
Apr 30, 11:22 AM CDT	River Flood Warning	LOT	4 days
Apr 30, 10:04 PM CDT	River Flood Advisory	LOT	36 hr
May 1, 4:32 AM CDT	River Flood Warning	LOT	6 days
May 2, 3:18 AM CDT	Frost Advisory	LOT	29 hr
May 6, 2:39 PM CDT	Frost Advisory	LOT	17 hr
May 7, 3:04 AM CDT	Frost Advisory	LOT	27 hr
May 10, 9:12 PM CDT	River Flood Advisory	LOT	52 hr
May 15, 5:52 PM CDT	Mesoscale Discussion	SPC	113 min
May 15, 7:19 PM CDT	Mesoscale Discussion	SPC	56 min
May 15, 7:52 PM CDT	Severe Thunderstorm Watch	SPC	3 hr
May 15, 8:35 PM CDT	Special Weather Statement	LOT	25 min
May 15, 10:14 PM CDT	Mesoscale Discussion	SPC	61 min
May 17, 3:44 PM CDT	Tornado Watch	SPC	9 hr
May 17, 9:45 PM CDT	Mesoscale Discussion	SPC	60 min
May 17, 9:59 PM CDT	Severe Thunderstorm Warning	LOT	61 min
May 17, 10:22 PM CDT	Tornado Warning	LOT	23 min
May 17, 10:43 PM CDT	Severe Thunderstorm Warning	LOT	47 min
May 21, 12:25 AM CDT	Dense Fog Advisory	LOT	5 hr
Jun 12, 8:13 PM CDT	Special Weather Statement	LOT	32 min
Jun 13, 3:10 PM CDT	Severe Thunderstorm Warning	LOT	30 min
Jun 14, 12:06 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 14, 12:11 PM CDT	Severe Thunderstorm Warning	LOT	49 min
Jun 14, 12:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 14, 12:47 PM CDT	Severe Thunderstorm Warning	LOT	43 min
Jun 14, 1:11 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 14, 1:28 PM CDT	Severe Thunderstorm Warning	LOT	47 min
Jun 14, 2:10 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 14, 2:40 PM CDT	Severe Thunderstorm Warning	LOT	35 min
Jun 14, 3:34 PM CDT	Severe Thunderstorm Warning	LOT	31 min
Jun 14, 4:36 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 14, 4:59 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 14, 5:56 PM CDT	Areal Flood Warning	LOT	6 hr
Jun 14, 11:49 PM CDT	Areal Flood Advisory	LOT	10 hr
Jun 16, 10:25 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 17, 1:35 AM CDT	Mesoscale Discussion	SPC	115 min
Jun 17, 2:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 5:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 8:12 PM CDT	Special Weather Statement	LOT	33 min
Jun 17, 8:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 17, 8:25 PM CDT	Severe Thunderstorm Warning	LOT	29 min
Jun 19, 12:44 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 22, 10:14 PM CDT	Special Weather Statement	LOT	31 min
Jun 23, 3:50 AM CDT	Special Weather Statement	LOT	25 min
Jun 24, 7:29 PM CDT	Special Weather Statement	LOT	31 min
Jun 28, 6:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 28, 7:06 PM CDT	Tornado Watch	SPC	4 hr
Jun 28, 7:53 PM CDT	Mesoscale Discussion	SPC	97 min
Jun 28, 7:55 PM CDT	Severe Thunderstorm Warning	LOT	65 min
Jun 28, 8:03 PM CDT	Flash Flood Watch	LOT	8 hr
Jun 28, 8:38 PM CDT	Severe Thunderstorm Warning	LOT	52 min
Jun 28, 9:09 PM CDT	Flash Flood Warning	LOT	6 hr
Jul 10, 1:25 AM CDT	Special Weather Statement	LOT	35 min
Jul 10, 1:56 AM CDT	Special Weather Statement	LOT	64 min
Jul 10, 3:16 AM CDT	Special Weather Statement	LOT	59 min
Jul 11, 9:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 11, 10:44 PM CDT	Flash Flood Warning	LOT	16 hr
Jul 12, 12:57 AM CDT	Special Weather Statement	LOT	33 min
Jul 12, 1:05 AM CDT	Severe Thunderstorm Warning	LOT	40 min
Jul 12, 1:29 AM CDT	Flash Flood Warning Emergency	LOT	10 hr
Jul 12, 7:04 AM CDT	Severe Thunderstorm Warning	LOT	71 min
Jul 12, 10:57 AM CDT	Flash Flood Warning	LOT	3 hr
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	21 days
Jul 12, 2:06 PM CDT	Areal Flood Warning	LOT	3 hr
Jul 12, 2:32 PM CDT	Flash Flood Watch	LOT	12 hr
Jul 16, 12:50 AM CDT	Special Weather Statement	LOT	55 min
Jul 16, 12:59 AM CDT	Severe Thunderstorm Warning	LOT	35 min
Jul 16, 1:39 AM CDT	Special Weather Statement	LOT	66 min
Jul 19, 5:11 PM CDT	Mesoscale Discussion	SPC	34 min
Jul 19, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 19, 7:54 PM CDT	Severe Thunderstorm Warning	LOT	51 min
Jul 19, 8:19 PM CDT	Mesoscale Discussion	SPC	86 min
Jul 19, 8:34 PM CDT	Severe Thunderstorm Warning	LOT	56 min
Jul 19, 10:49 PM CDT	Special Weather Statement	LOT	56 min
Jul 20, 2:15 PM CDT	Flash Flood Watch	LOT	42 hr
Jul 21, 3:08 PM CDT	Severe Thunderstorm Warning	LOT	37 min
Jul 21, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 21, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 21, 8:33 PM CDT	Flash Flood Warning	LOT	6 hr
Jul 21, 8:35 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 21, 9:10 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 21, 11:23 PM CDT	Mesoscale Discussion	SPC	67 min
Jul 22, 2:30 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 23, 1:03 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 2:17 PM CDT	Special Weather Statement	LOT	13 min
Jul 23, 3:17 PM CDT	Special Weather Statement	LOT	28 min
Jul 23, 3:42 PM CDT	Special Weather Statement	LOT	33 min
Jul 23, 3:45 PM CDT	Severe Thunderstorm Warning	LOT	45 min
Jul 23, 4:19 PM CDT	Areal Flood Advisory	LOT	4 hr
Aug 3, 12:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 3, 5:18 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 10, 4:06 PM CDT	Severe Thunderstorm Warning	LOT	24 min
Aug 10, 4:28 PM CDT	Special Weather Statement	LOT	32 min
Aug 10, 5:31 PM CDT	Mesoscale Discussion	SPC	89 min
Aug 29, 2:02 AM CDT	Dense Fog Advisory	LOT	7 hr
Aug 30, 4:30 AM CDT	Dense Fog Advisory	LOT	5 hr
Sep 14, 1:14 AM CDT	Dense Fog Advisory	LOT	9 hr
Sep 20, 12:31 AM CDT	Dense Fog Advisory	LOT	8 hr
Oct 14, 2:55 AM CDT	Flash Flood Watch	LOT	25 hr
Oct 14, 10:47 PM CDT	River Flood Warning	LOT	31 hr
Oct 25, 3:00 AM CDT	Frost Advisory	LOT	29 hr
Oct 27, 3:29 PM CDT	Freeze Warning	LOT	42 hr
Nov 4, 11:33 PM CDT	Dense Fog Advisory	LOT	10 hr
Nov 12, 9:39 PM CST	Dense Fog Advisory	LOT	14 hr
Dec 4, 3:10 AM CST	Wind Advisory	LOT	39 hr
Dec 25, 3:02 AM CST	Wind Chill Advisory	LOT	33 hr
Dec 26, 12:54 PM CST	Wind Chill Advisory	LOT	22 hr
Dec 29, 1:05 PM CST	Wind Chill Advisory	LOT	24 hr
Dec 30, 6:27 PM CST	Wind Chill Advisory	LOT	14 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	21
Tornado Warning	1
Severe Thunderstorm Watch	9
Tornado Watch	3
Mesoscale Discussion	27
Special Weather Statement	24
Flooding
Areal Flood Warning	2
Flash Flood Warning	5
River Flood Warning	5
Flash Flood Watch	4
River Flood Watch	1
Areal Flood Advisory	10
River Flood Advisory	7
Winter
Freezing Rain Advisory	1
Winter Weather Advisory	2
Cold
Freeze Warning	1
Frost Advisory	4
Wind Chill Advisory	4
Wind and dust
High Wind Warning	2
Wind Advisory	4
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	14

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.