Alert archive / Illinois / McHenry County

Weather alerts in McHenry County, Illinois, 2010

157 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts: 157
Warnings: 37
Watches: 29
Advisories: 55
Busiest month: June32 alerts
Busiest day: July 23, 201010 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 1, 3:17 PM CST	Wind Chill Advisory	LOT	19 hr
Jan 3, 2:50 AM CST	Wind Chill Advisory	LOT	7 hr
Jan 5, 1:34 PM CST	Winter Storm Watch	LOT	23 hr
Jan 6, 12:51 PM CST	Winter Storm Warning	LOT	3 days
Jan 7, 3:48 PM CST	Winter Weather Advisory	LOT	17 hr
Jan 9, 2:35 PM CST	Wind Chill Advisory	LOT	18 hr
Jan 16, 8:16 PM CST	Freezing Fog Advisory	LOT	15 hr
Jan 17, 3:21 PM CST	Freezing Fog Advisory	LOT	21 hr
Jan 18, 8:36 PM CST	Freezing Fog Advisory	LOT	8 hr
Jan 20, 4:00 AM CST	Freezing Rain Advisory	LOT	26 hr
Jan 20, 10:34 AM CST	Mesoscale Discussion	SPC	4 hr
Jan 23, 3:26 PM CST	Dense Fog Advisory	LOT	9 hr
Feb 7, 1:17 PM CST	Winter Storm Watch	LOT	15 hr
Feb 8, 3:53 AM CST	Winter Storm Warning	LOT	53 hr
Feb 10, 4:14 AM CST	Winter Weather Advisory	LOT	10 hr
Feb 20, 3:47 AM CST	Winter Storm Watch	LOT	32 hr
Feb 21, 12:16 PM CST	Winter Storm Warning	LOT	20 hr
Mar 7, 9:37 PM CST	Dense Fog Advisory	LOT	12 hr
Mar 8, 6:05 PM CST	Dense Fog Advisory	LOT	18 hr
Mar 10, 8:33 PM CST	Dense Fog Advisory	LOT	12 hr
Mar 13, 8:38 AM CST	River Flood Advisory	LOT	23 hr
Mar 14, 8:46 AM CDT	River Flood Warning	LOT	26 hr
Mar 15, 10:46 AM CDT	River Flood Advisory	LOT	5 days
Mar 20, 8:57 AM CDT	River Flood Advisory	LOT	36 hr
Mar 22, 8:52 AM CDT	River Flood Advisory	LOT	36 hr
Apr 5, 3:53 AM CDT	Dense Fog Advisory	LOT	4 hr
Apr 5, 9:37 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 5, 9:39 PM CDT	Severe Thunderstorm Warning	LOT	51 min
Apr 5, 10:06 PM CDT	Severe Thunderstorm Warning	LOT	54 min
Apr 5, 11:07 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 6, 12:36 AM CDT	Severe Thunderstorm Warning	LOT	54 min
Apr 6, 4:44 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 6, 6:29 AM CDT	Severe Thunderstorm Warning	LOT	61 min
Apr 6, 7:37 AM CDT	Mesoscale Discussion	SPC	83 min
Apr 6, 9:28 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 17, 2:24 AM CDT	Frost Advisory	LOT	27 hr
Apr 27, 11:16 AM CDT	Frost Advisory	LOT	21 hr
Apr 29, 3:26 AM CDT	Wind Advisory	LOT	16 hr
Apr 30, 12:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 30, 1:05 PM CDT	Tornado Watch	SPC	9 hr
Apr 30, 2:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 30, 5:37 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 30, 7:32 PM CDT	Mesoscale Discussion	SPC	58 min
May 5, 3:29 PM CDT	Red Flag Warning	LOT	6 hr
May 8, 4:10 AM CDT	Frost Advisory	LOT	28 hr
May 12, 3:13 PM CDT	Flood Watch	LOT	24 hr
May 12, 9:51 PM CDT	River Flood Watch	LOT	13 hr
May 13, 2:24 AM CDT	Flash Flood Warning	LOT	6 hr
May 13, 4:33 AM CDT	Areal Flood Advisory	LOT	5 hr
May 13, 6:07 AM CDT	Flash Flood Warning	LOT	6 hr
May 13, 8:19 AM CDT	Areal Flood Warning	LOT	8 hr
May 13, 10:31 AM CDT	River Flood Warning	LOT	4 days
May 13, 4:01 PM CDT	Areal Flood Warning	LOT	18 hr
May 21, 5:49 PM CDT	Areal Flood Advisory	LOT	3 hr
May 22, 1:06 AM CDT	Dense Fog Advisory	LOT	9 hr
May 26, 2:11 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 1, 12:32 AM CDT	Dense Fog Advisory	LOT	8 hr
Jun 1, 3:46 PM CDT	Flash Flood Watch	LOT	23 hr
Jun 2, 5:42 AM CDT	Areal Flood Advisory	LOT	6 hr
Jun 2, 5:55 PM CDT	Mesoscale Discussion	SPC	65 min
Jun 4, 1:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 4, 4:36 PM CDT	Flash Flood Watch	LOT	32 hr
Jun 4, 5:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 5, 9:44 PM CDT	Areal Flood Advisory	LOT	111 min
Jun 18, 2:33 AM CDT	Mesoscale Discussion	SPC	27 min
Jun 18, 10:41 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 12:14 PM CDT	Mesoscale Discussion	SPC	61 min
Jun 18, 12:29 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 18, 2:48 PM CDT	Severe Thunderstorm Warning	LOT	42 min
Jun 18, 3:18 PM CDT	Severe Thunderstorm Warning	LOT	72 min
Jun 18, 4:16 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 18, 5:06 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 18, 5:47 PM CDT	Flash Flood Watch	LOT	9 hr
Jun 18, 7:38 PM CDT	Mesoscale Discussion	SPC	97 min
Jun 18, 8:13 PM CDT	Severe Thunderstorm Warning	LOT	47 min
Jun 18, 8:47 PM CDT	Flash Flood Warning	LOT	3 hr
Jun 18, 9:01 PM CDT	Severe Thunderstorm Warning	LOT	59 min
Jun 21, 4:36 PM CDT	Tornado Watch	SPC	5 hr
Jun 21, 9:34 PM CDT	Severe Thunderstorm Warning	LOT	56 min
Jun 21, 10:22 PM CDT	Tornado Warning	LOT	38 min
Jun 22, 9:01 PM CDT	Flash Flood Watch	LOT	25 hr
Jun 23, 3:38 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 23, 8:42 AM CDT	Areal Flood Advisory	LOT	5 hr
Jun 23, 2:10 PM CDT	Tornado Watch	SPC	7 hr
Jun 26, 1:52 AM CDT	Mesoscale Discussion	SPC	83 min
Jun 26, 1:55 AM CDT	Special Weather Statement	LOT	60 min
Jun 27, 5:58 AM CDT	Mesoscale Discussion	SPC	92 min
Jun 27, 8:52 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 12, 1:25 AM CDT	Dense Fog Advisory	LOT	6 hr
Jul 14, 4:06 AM CDT	Dense Fog Advisory	LOT	4 hr
Jul 14, 5:57 PM CDT	Mesoscale Discussion	SPC	93 min
Jul 14, 9:25 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 22, 8:53 PM CDT	Tornado Watch	SPC	5 hr
Jul 22, 9:48 PM CDT	Severe Thunderstorm Warning	LOT	57 min
Jul 22, 10:21 PM CDT	Tornado Warning	LOT	39 min
Jul 22, 11:00 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 22, 11:10 PM CDT	Areal Flood Advisory	LOT	8 hr
Jul 23, 1:23 AM CDT	Mesoscale Discussion	SPC	52 min
Jul 23, 4:35 AM CDT	Flash Flood Watch	LOT	31 hr
Jul 23, 9:30 AM CDT	River Flood Advisory	LOT	13 hr
Jul 23, 2:30 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 23, 3:01 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 23, 10:11 PM CDT	River Flood Watch	LOT	14 hr
Jul 23, 10:35 PM CDT	Special Weather Statement	LOT	55 min
Jul 23, 11:31 PM CDT	Areal Flood Advisory	LOT	8 hr
Jul 23, 11:31 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 12:04 AM CDT	Flash Flood Warning	LOT	7 hr
Jul 24, 7:09 AM CDT	Areal Flood Warning	LOT	33 hr
Jul 24, 9:25 AM CDT	River Flood Warning	LOT	36 hr
Jul 31, 2:22 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 31, 9:43 AM CDT	River Flood Warning	LOT	8 days
Jul 31, 10:49 PM CDT	Dense Fog Advisory	LOT	12 hr
Aug 9, 2:20 AM CDT	Mesoscale Discussion	SPC	100 min
Aug 11, 3:37 PM CDT	Heat Advisory	LOT	51 hr
Aug 13, 1:54 PM CDT	Mesoscale Discussion	SPC	66 min
Aug 13, 2:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 13, 4:49 PM CDT	Severe Thunderstorm Warning	LOT	41 min
Aug 13, 5:27 PM CDT	Mesoscale Discussion	SPC	63 min
Aug 13, 5:29 PM CDT	Severe Thunderstorm Warning	LOT	32 min
Aug 13, 6:44 PM CDT	Special Weather Statement	LOT	31 min
Aug 13, 7:08 PM CDT	Special Weather Statement	LOT	37 min
Aug 20, 1:58 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 20, 5:20 PM CDT	Mesoscale Discussion	SPC	85 min
Sep 5, 11:31 PM CDT	Special Weather Statement	LOT	44 min
Sep 6, 6:45 AM CDT	Severe Thunderstorm Warning	LOT	45 min
Sep 6, 3:56 PM CDT	Wind Advisory	LOT	27 hr
Sep 21, 1:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 21, 3:40 PM CDT	Mesoscale Discussion	SPC	95 min
Sep 21, 4:56 PM CDT	Special Weather Statement	LOT	34 min
Sep 21, 5:28 PM CDT	Severe Thunderstorm Warning	LOT	47 min
Oct 3, 1:36 PM CDT	Frost Advisory	LOT	17 hr
Oct 4, 3:30 PM CDT	Frost Advisory	LOT	16 hr
Oct 20, 1:33 PM CDT	Red Flag Warning	LOT	5 hr
Oct 21, 3:43 PM CDT	Frost Advisory	LOT	16 hr
Oct 24, 3:39 PM CDT	High Wind Watch	LOT	24 hr
Oct 25, 4:38 AM CDT	High Wind Warning	LOT	39 hr
Oct 26, 2:21 AM CDT	Mesoscale Discussion	SPC	114 min
Oct 26, 3:28 AM CDT	Tornado Watch	SPC	8 hr
Oct 26, 6:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Oct 26, 7:13 PM CDT	Wind Advisory	LOT	24 hr
Oct 27, 4:08 AM CDT	High Wind Warning	LOT	15 hr
Nov 22, 11:23 AM CST	Tornado Watch	SPC	7 hr
Nov 22, 2:10 PM CST	Mesoscale Discussion	SPC	95 min
Nov 22, 3:03 PM CST	Tornado Warning	LOT	27 min
Nov 22, 3:30 PM CST	Tornado Warning	LOT	15 min
Nov 25, 12:07 AM CST	Dense Fog Advisory	LOT	9 hr
Dec 3, 2:28 AM CST	Winter Weather Advisory	LOT	50 hr
Dec 10, 3:58 PM CST	Winter Storm Watch	LOT	23 hr
Dec 10, 10:08 PM CST	Dense Fog Advisory	LOT	7 hr
Dec 11, 1:07 PM CST	Winter Storm Warning	LOT	26 hr
Dec 12, 2:48 PM CST	Wind Chill Advisory	LOT	20 hr
Dec 12, 2:48 PM CST	Winter Weather Advisory	LOT	9 hr
Dec 19, 3:50 PM CST	Winter Weather Advisory	LOT	42 hr
Dec 21, 2:43 PM CST	Dense Fog Advisory	LOT	8 hr
Dec 21, 10:49 PM CST	Freezing Fog Advisory	LOT	4 hr
Dec 23, 12:59 AM CST	Dense Fog Advisory	LOT	8 hr
Dec 30, 6:46 AM CST	Dense Fog Advisory	LOT	36 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	14
Tornado Warning	4
Severe Thunderstorm Watch	10
Tornado Watch	6
Mesoscale Discussion	30
Special Weather Statement	6
Flooding
Areal Flood Warning	3
Flash Flood Warning	4
River Flood Warning	4
Flash Flood Watch	5
Flood Watch	1
River Flood Watch	2
Areal Flood Advisory	11
River Flood Advisory	5
Winter
Winter Storm Warning	4
Winter Storm Watch	4
Freezing Rain Advisory	1
Winter Weather Advisory	5
Heat
Heat Advisory	1
Cold
Frost Advisory	6
Wind Chill Advisory	4
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	3
Fire
Red Flag Warning	2
Fog and smoke
Dense Fog Advisory	15
Freezing Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.