Weather alerts in Cook County, Illinois, 2017

146 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Cook County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts: 146
Warnings: 56
Watches: 11
Advisories: 42
Busiest month: July42 alerts
Busiest day: July 12, 201713 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 12, 3:05 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 17, 1:44 AM CST	Areal Flood Warning	LOT	6 hr
Jan 17, 10:31 AM CST	River Flood Advisory	LOT	36 hr
Jan 17, 10:31 AM CST	River Flood Advisory	LOT	36 hr
Feb 24, 12:56 AM CST	Special Weather Statement	LOT	34 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
Feb 28, 6:00 PM CST	Severe Thunderstorm Warning	LOT	45 min
Feb 28, 6:26 PM CST	Areal Flood Advisory	LOT	3 hr
Feb 28, 6:44 PM CST	Severe Thunderstorm Warning	LOT	46 min
Feb 28, 7:45 PM CST	Severe Thunderstorm Warning	LOT	45 min
Feb 28, 8:51 PM CST	Areal Flood Advisory	LOT	6 hr
Feb 28, 8:57 PM CST	Severe Thunderstorm Warning	LOT	37 min
Feb 28, 9:09 PM CST	Areal Flood Warning	LOT	6 hr
Feb 28, 9:51 PM CST	Tornado Watch	SPC	6 hr
Feb 28, 9:57 PM CST	Special Weather Statement	LOT	33 min
Feb 28, 11:28 PM CST	River Flood Warning	LOT	31 hr
Feb 28, 11:38 PM CST	River Flood Advisory	LOT	36 hr
Mar 6, 10:35 PM CST	Severe Thunderstorm Watch	SPC	4 hr
Mar 7, 12:43 AM CST	Severe Thunderstorm Warning	LOT	62 min
Mar 8, 9:35 AM CST	Red Flag Warning	LOT	7 hr
Mar 20, 1:42 AM CDT	Severe Thunderstorm Warning	LOT	63 min
Mar 20, 2:22 AM CDT	Severe Thunderstorm Warning	LOT	53 min
Mar 20, 3:55 AM CDT	Areal Flood Advisory	LOT	4 hr
Mar 23, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Mar 30, 5:49 AM CDT	Areal Flood Advisory	LOT	3 hr
Mar 30, 7:58 AM CDT	River Flood Warning	LOT	38 hr
Mar 30, 8:02 AM CDT	River Flood Advisory	LOT	36 hr
Mar 30, 9:57 AM CDT	River Flood Advisory	LOT	4 days
Mar 30, 9:57 AM CDT	River Flood Advisory	LOT	3 days
Mar 30, 9:57 AM CDT	River Flood Advisory	LOT	33 hr
Mar 30, 1:08 PM CDT	Areal Flood Advisory	LOT	6 hr
Mar 30, 7:01 PM CDT	Areal Flood Advisory	LOT	5 hr
Mar 30, 9:37 PM CDT	River Flood Warning	LOT	33 hr
Apr 3, 10:04 AM CDT	River Flood Advisory	LOT	5 days
Apr 3, 10:04 AM CDT	River Flood Advisory	LOT	3 days
Apr 4, 9:32 PM CDT	River Flood Advisory	LOT	69 hr
Apr 5, 9:52 AM CDT	River Flood Warning	LOT	3 days
Apr 6, 9:46 AM CDT	River Flood Advisory	LOT	29 hr
Apr 6, 9:54 AM CDT	River Flood Warning	LOT	21 hr
Apr 6, 10:37 AM CDT	River Flood Advisory	LOT	36 hr
Apr 6, 10:59 AM CDT	River Flood Warning	LOT	13 hr
Apr 10, 11:57 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 10, 12:49 PM CDT	Severe Thunderstorm Warning	LOT	41 min
Apr 10, 1:10 PM CDT	Severe Thunderstorm Warning	LOT	29 min
Apr 10, 1:48 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 10, 2:08 PM CDT	Special Weather Statement	LOT	52 min
Apr 10, 3:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 10, 6:22 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 10, 9:36 PM CDT	River Flood Advisory	LOT	57 hr
Apr 29, 7:04 PM CDT	Areal Flood Advisory	LOT	3 hr
Apr 29, 9:08 PM CDT	River Flood Advisory	LOT	60 hr
Apr 30, 11:22 AM CDT	River Flood Warning	LOT	62 hr
Apr 30, 11:22 AM CDT	River Flood Warning	LOT	71 hr
Apr 30, 11:41 AM CDT	River Flood Advisory	LOT	72 hr
Apr 30, 10:04 PM CDT	River Flood Advisory	LOT	46 hr
Apr 30, 10:04 PM CDT	River Flood Advisory	LOT	51 hr
May 1, 4:23 AM CDT	River Flood Warning	LOT	3 days
May 1, 4:23 AM CDT	River Flood Warning	LOT	53 hr
May 15, 5:52 PM CDT	Mesoscale Discussion	SPC	113 min
May 17, 11:11 PM CDT	Severe Thunderstorm Warning	LOT	49 min
May 18, 12:19 AM CDT	Severe Thunderstorm Warning	LOT	41 min
May 18, 12:58 AM CDT	Severe Thunderstorm Warning	LOT	47 min
May 18, 1:00 AM CDT	Severe Thunderstorm Warning	LOT	30 min
May 28, 1:32 PM CDT	Special Weather Statement	LOT	43 min
Jun 14, 12:06 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 14, 12:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 14, 12:43 PM CDT	Special Weather Statement	LOT	32 min
Jun 14, 2:29 PM CDT	Severe Thunderstorm Warning	LOT	32 min
Jun 14, 3:02 PM CDT	Mesoscale Discussion	SPC	118 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, 5:03 PM CDT	Severe Thunderstorm Warning	LOT	42 min
Jun 17, 2:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 4:38 PM CDT	Special Weather Statement	LOT	37 min
Jun 17, 5:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
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 23, 4:50 AM CDT	Special Weather Statement	LOT	25 min
Jun 23, 5:11 AM CDT	Special Weather Statement	LOT	34 min
Jun 28, 7:06 PM CDT	Tornado Watch	SPC	4 hr
Jun 28, 8:38 PM CDT	Severe Thunderstorm Warning	LOT	52 min
Jun 28, 11:56 PM CDT	Severe Thunderstorm Warning	LOT	34 min
Jun 29, 10:02 AM CDT	River Flood Advisory	LOT	36 hr
Jul 7, 8:19 AM CDT	Special Weather Statement	LOT	26 min
Jul 7, 11:49 AM CDT	Severe Thunderstorm Warning	LOT	41 min
Jul 10, 7:38 AM CDT	Special Weather Statement	LOT	67 min
Jul 10, 7:49 AM CDT	Special Weather Statement	LOT	56 min
Jul 10, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 11, 10:44 PM CDT	Flash Flood Warning	LOT	16 hr
Jul 12, 1:51 AM CDT	Severe Thunderstorm Warning	LOT	28 min
Jul 12, 4:15 AM CDT	River Flood Warning	LOT	14 days
Jul 12, 8:33 AM CDT	Mesoscale Discussion	SPC	117 min
Jul 12, 8:38 AM CDT	Special Weather Statement	LOT	52 min
Jul 12, 9:24 AM CDT	Severe Thunderstorm Warning	LOT	21 min
Jul 12, 10:14 AM CDT	Flash Flood Warning	LOT	6 hr
Jul 12, 10:29 AM CDT	River Flood Advisory	LOT	36 hr
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	5 days
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	4 days
Jul 12, 11:46 AM CDT	River Flood Warning	LOT	20 hr
Jul 12, 2:06 PM CDT	Areal Flood Warning	LOT	3 hr
Jul 12, 5:05 PM CDT	River Flood Advisory	LOT	4 days
Jul 14, 9:52 PM CDT	River Flood Advisory	LOT	7 days
Jul 19, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
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, 9:08 PM CDT	Severe Thunderstorm Warning	LOT	67 min
Jul 20, 7:14 AM CDT	Areal Flood Advisory	LOT	2 hr
Jul 20, 8:15 AM CDT	River Flood Warning	LOT	5 days
Jul 21, 4:10 PM CDT	River Flood Advisory	LOT	51 hr
Jul 21, 4:14 PM CDT	Severe Thunderstorm Warning	LOT	46 min
Jul 21, 4:41 PM CDT	River Flood Warning	LOT	3 days
Jul 21, 4:41 PM CDT	Severe Thunderstorm Warning	LOT	49 min
Jul 21, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 21, 5:18 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 21, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 21, 8:35 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 21, 8:43 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 21, 11:11 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 21, 11:23 PM CDT	Mesoscale Discussion	SPC	67 min
Jul 22, 9:28 AM CDT	River Flood Advisory	LOT	21 hr
Jul 23, 1:03 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 4:19 PM CDT	Areal Flood Advisory	LOT	4 hr
Jul 23, 4:33 PM CDT	Severe Thunderstorm Warning	LOT	42 min
Jul 23, 4:52 PM CDT	Severe Thunderstorm Warning	LOT	53 min
Jul 23, 5:28 PM CDT	Areal Flood Advisory	LOT	4 hr
Aug 3, 12:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 3, 2:52 PM CDT	Special Weather Statement	LOT	23 min
Aug 10, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 10, 5:31 PM CDT	Mesoscale Discussion	SPC	89 min
Aug 28, 2:23 PM CDT	Severe Thunderstorm Warning	LOT	37 min
Oct 14, 7:55 AM CDT	Areal Flood Advisory	LOT	3 hr
Oct 14, 8:12 AM CDT	River Flood Warning	LOT	54 hr
Oct 14, 8:23 AM CDT	River Flood Advisory	LOT	47 hr
Oct 14, 8:23 AM CDT	River Flood Advisory	LOT	3 days
Oct 14, 6:01 PM CDT	Mesoscale Discussion	SPC	89 min
Oct 14, 7:24 PM CDT	Areal Flood Advisory	LOT	12 hr
Oct 14, 8:05 PM CDT	Special Weather Statement	LOT	55 min
Oct 14, 9:04 PM CDT	Mesoscale Discussion	SPC	86 min
Oct 14, 10:02 PM CDT	Flash Flood Warning	LOT	8 hr
Oct 14, 10:32 PM CDT	River Flood Warning	LOT	42 hr
Oct 14, 11:01 PM CDT	River Flood Advisory	LOT	50 hr
Oct 15, 5:45 AM CDT	Areal Flood Warning	LOT	6 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	30
Severe Thunderstorm Watch	8
Tornado Watch	3
Mesoscale Discussion	23
Special Weather Statement	14
Flooding
Areal Flood Warning	4
Flash Flood Warning	3
River Flood Warning	18
Areal Flood Advisory	16
River Flood Advisory	26
Fire
Red Flag Warning	1

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.