Alert archive / Illinois / McHenry County

Weather alerts in McHenry County, Illinois, 2019

164 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 164
Warnings: 36
Watches: 21
Advisories: 59
Busiest month: September27 alerts
Busiest day: September 12, 201911 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, 6:04 AM CST	Winter Weather Advisory	LOT	5 hr
Jan 7, 2:10 PM CST	Wind Advisory	LOT	33 hr
Jan 11, 3:15 AM CST	Winter Weather Advisory	LOT	48 hr
Jan 14, 1:45 PM CST	Winter Weather Advisory	LOT	16 hr
Jan 17, 12:13 PM CST	Winter Storm Watch	LOT	15 hr
Jan 18, 3:23 AM CST	Winter Storm Warning	LOT	35 hr
Jan 18, 6:58 PM CST	Mesoscale Discussion	SPC	6 hr
Jan 21, 1:57 PM CST	Winter Weather Advisory	LOT	46 hr
Jan 22, 3:24 AM CST	Winter Storm Warning	LOT	33 hr
Jan 22, 2:36 PM CST	Mesoscale Discussion	SPC	4 hr
Jan 23, 2:20 PM CST	Wind Chill Watch	LOT	13 hr
Jan 23, 3:00 PM CST	Wind Chill Advisory	LOT	45 hr
Jan 26, 3:15 AM CST	Winter Storm Watch	LOT	24 hr
Jan 26, 10:01 PM CST	Wind Chill Advisory	LOT	11 hr
Jan 27, 3:01 AM CST	Winter Storm Warning	LOT	29 hr
Jan 27, 3:01 AM CST	Winter Weather Advisory	LOT	45 hr
Jan 28, 2:42 AM CST	Mesoscale Discussion	SPC	4 hr
Jan 28, 3:01 AM CST	Wind Chill Watch	LOT	11 hr
Jan 28, 1:36 PM CST	Wind Chill Warning	LOT	70 hr
Jan 28, 1:36 PM CST	Wind Chill Advisory	LOT	28 hr
Feb 2, 7:12 PM CST	Dense Fog Advisory	LOT	6 hr
Feb 3, 8:50 AM CST	Dense Fog Advisory	LOT	15 hr
Feb 4, 2:05 PM CST	Winter Weather Advisory	LOT	34 hr
Feb 5, 3:31 AM CST	Ice Storm Warning	LOT	23 hr
Feb 5, 5:56 PM CST	Mesoscale Discussion	SPC	6 hr
Feb 6, 2:55 AM CST	Winter Weather Advisory	LOT	30 hr
Feb 6, 2:55 AM CST	Winter Weather Advisory	LOT	6 hr
Feb 7, 9:21 AM CST	Dense Fog Advisory	LOT	5 hr
Feb 7, 10:00 AM CST	River Flood Advisory	LOT	21 days
Feb 7, 12:14 PM CST	Winter Weather Advisory	LOT	14 hr
Feb 7, 8:28 PM CST	River Flood Warning	LOT	58 hr
Feb 8, 2:25 AM CST	Wind Chill Advisory	LOT	8 hr
Feb 8, 9:12 AM CST	River Flood Advisory	LOT	48 hr
Feb 10, 2:43 PM CST	Winter Weather Advisory	LOT	60 hr
Feb 12, 7:57 AM CST	Dense Fog Advisory	LOT	2 hr
Feb 16, 2:58 PM CST	Winter Weather Advisory	LOT	42 hr
Feb 19, 3:35 AM CST	Winter Weather Advisory	LOT	35 hr
Feb 22, 4:12 AM CST	Winter Weather Advisory	LOT	29 hr
Feb 22, 3:06 PM CST	High Wind Watch	LOT	23 hr
Feb 23, 9:14 AM CST	Areal Flood Advisory	LOT	6 hr
Feb 23, 2:07 PM CST	High Wind Warning	LOT	31 hr
Feb 27, 3:32 AM CST	Winter Weather Advisory	LOT	5 hr
Mar 3, 3:11 AM CST	Wind Chill Advisory	LOT	32 hr
Mar 9, 10:53 AM CST	River Flood Advisory	LOT	7 days
Mar 9, 2:29 PM CST	Wind Advisory	LOT	16 hr
Mar 9, 5:09 PM CST	Areal Flood Advisory	LOT	5 hr
Mar 13, 9:56 AM CDT	Flood Watch	LOT	29 hr
Mar 13, 10:43 AM CDT	River Flood Warning	LOT	21 days
Mar 13, 2:42 PM CDT	Wind Advisory	LOT	31 hr
Mar 14, 12:24 PM CDT	Tornado Watch	SPC	2 hr
Mar 14, 1:22 PM CDT	Special Weather Statement	LOT	53 min
Apr 10, 2:52 PM CDT	Wind Advisory	LOT	27 hr
Apr 12, 3:23 AM CDT	Wind Advisory	LOT	17 hr
Apr 14, 11:23 AM CDT	Winter Weather Advisory	LOT	4 hr
Apr 26, 2:32 PM CDT	Winter Storm Watch	LOT	13 hr
Apr 26, 8:14 PM CDT	Winter Storm Warning	LOT	21 hr
Apr 27, 11:32 AM CDT	Mesoscale Discussion	SPC	6 hr
Apr 27, 5:16 PM CDT	Winter Weather Advisory	LOT	6 hr
Apr 30, 10:16 AM CDT	River Flood Warning	LOT	4 days
May 1, 2:14 PM CDT	Flash Flood Watch	LOT	27 hr
May 3, 6:00 AM CDT	Dense Fog Advisory	LOT	3 hr
May 7, 11:24 AM CDT	River Flood Warning	LOT	21 days
May 8, 8:31 PM CDT	Special Weather Statement	LOT	29 min
May 9, 4:47 AM CDT	River Flood Warning	LOT	9 days
May 22, 7:45 PM CDT	Special Weather Statement	LOT	15 min
May 24, 3:33 AM CDT	Flash Flood Watch	LOT	22 hr
May 24, 11:18 AM CDT	River Flood Warning	LOT	16 days
May 27, 12:50 PM CDT	Mesoscale Discussion	SPC	85 min
May 30, 1:58 AM CDT	Areal Flood Advisory	LOT	3 hr
Jun 1, 2:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 1, 2:23 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 1, 4:14 PM CDT	Special Weather Statement	LOT	46 min
Jun 1, 4:24 PM CDT	Severe Thunderstorm Warning	LOT	55 min
Jun 1, 5:21 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 5, 1:00 AM CDT	Areal Flood Advisory	LOT	5 hr
Jun 18, 4:26 AM CDT	Dense Fog Advisory	LOT	5 hr
Jun 24, 12:35 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 24, 5:16 PM CDT	Special Weather Statement	LOT	14 min
Jun 24, 5:45 PM CDT	Special Weather Statement	LOT	15 min
Jun 25, 1:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 1:52 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 27, 3:27 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 27, 3:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 27, 5:11 PM CDT	Special Weather Statement	LOT	49 min
Jun 27, 5:40 PM CDT	Special Weather Statement	LOT	50 min
Jun 27, 6:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 28, 8:36 AM CDT	Special Weather Statement	LOT	54 min
Jun 28, 8:59 AM CDT	Severe Thunderstorm Warning	LOT	46 min
Jun 28, 9:48 AM CDT	Special Weather Statement	LOT	57 min
Jun 30, 11:43 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 30, 12:21 PM CDT	Severe Thunderstorm Warning	LOT	54 min
Jun 30, 1:02 PM CDT	Severe Thunderstorm Warning	LOT	73 min
Jun 30, 1:13 PM CDT	Severe Thunderstorm Warning	LOT	47 min
Jun 30, 1:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 30, 9:18 PM CDT	River Flood Advisory	LOT	6 days
Jul 2, 2:31 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 2, 5:19 PM CDT	Special Weather Statement	LOT	56 min
Jul 2, 6:08 PM CDT	Special Weather Statement	LOT	52 min
Jul 3, 6:59 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 17, 2:56 AM CDT	Heat Advisory	LOT	48 hr
Jul 17, 2:14 PM CDT	Excessive Heat Warning	LOT	3 days
Jul 18, 6:15 AM CDT	Special Weather Statement	LOT	45 min
Jul 18, 11:06 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 20, 1:59 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 20, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 20, 3:55 PM CDT	Severe Thunderstorm Warning	LOT	65 min
Jul 20, 4:35 PM CDT	Severe Thunderstorm Warning	LOT	40 min
Jul 20, 4:58 PM CDT	Mesoscale Discussion	SPC	62 min
Aug 5, 10:16 PM CDT	Special Weather Statement	LOT	59 min
Aug 7, 11:45 PM CDT	Special Weather Statement	LOT	45 min
Aug 8, 12:28 AM CDT	Special Weather Statement	LOT	32 min
Aug 13, 4:41 PM CDT	Special Weather Statement	LOT	49 min
Aug 13, 5:13 PM CDT	Special Weather Statement	LOT	47 min
Aug 16, 4:32 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 18, 5:44 AM CDT	Mesoscale Discussion	SPC	91 min
Aug 18, 6:06 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 18, 7:40 AM CDT	Mesoscale Discussion	SPC	2 hr
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
Oct 1, 10:18 AM CDT	Mesoscale Discussion	SPC	2 hr
Oct 1, 5:03 PM CDT	Mesoscale Discussion	SPC	117 min
Oct 1, 8:15 PM CDT	River Flood Watch	LOT	13 hr
Oct 1, 11:05 PM CDT	Special Weather Statement	LOT	40 min
Oct 2, 9:23 AM CDT	River Flood Warning	LOT	17 days
Oct 11, 3:36 AM CDT	Freeze Warning	LOT	29 hr
Oct 13, 2:23 PM CDT	Frost Advisory	LOT	18 hr
Oct 21, 8:34 PM CDT	Wind Advisory	LOT	18 hr
Oct 26, 7:10 PM CDT	Areal Flood Advisory	LOT	96 min
Oct 26, 8:44 PM CDT	Areal Flood Warning	LOT	12 hr
Oct 26, 9:35 PM CDT	River Flood Warning	LOT	37 hr
Oct 28, 10:36 AM CDT	River Flood Advisory	LOT	10 hr
Oct 28, 9:00 PM CDT	River Flood Warning	LOT	5 days
Oct 30, 2:27 PM CDT	Winter Weather Advisory	LOT	28 hr
Nov 10, 12:55 PM CST	Winter Weather Advisory	LOT	32 hr
Nov 25, 2:44 PM CST	High Wind Watch	LOT	23 hr
Nov 26, 1:26 PM CST	High Wind Warning	LOT	29 hr
Dec 1, 2:48 AM CST	Dense Fog Advisory	LOT	9 hr
Dec 9, 1:57 PM CST	Winter Weather Advisory	LOT	109 min
Dec 24, 3:08 AM CST	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.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	9
Tornado Warning	1
Severe Thunderstorm Watch	7
Tornado Watch	1
Mesoscale Discussion	27
Special Weather Statement	21
Flooding
Areal Flood Warning	3
Flash Flood Warning	2
River Flood Warning	11
Flash Flood Watch	4
Flood Watch	1
River Flood Watch	1
Areal Flood Advisory	9
River Flood Advisory	7
Winter
Ice Storm Warning	1
Winter Storm Warning	4
Winter Storm Watch	3
Winter Weather Advisory	19
Heat
Excessive Heat Warning	1
Heat Advisory	1
Cold
Freeze Warning	1
Wind Chill Warning	1
Wind Chill Watch	2
Frost Advisory	1
Wind Chill Advisory	5
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.