Weather alerts in Cook County, Illinois, 2023

182 weather alerts in 2023, 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 2023. Tap one for its archive.

Alerts: 182
Warnings: 60
Watches: 19
Advisories: 52
Busiest month: July62 alerts
Busiest day: July 5, 202311 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, 5:16 PM CST	Dense Fog Advisory	LOT	16 hr
Jan 2, 9:04 AM CST	Dense Fog Advisory	LOT	19 hr
Jan 3, 9:35 AM CST	Dense Fog Advisory	LOT	16 hr
Jan 3, 2:19 PM CST	Special Weather Statement	LOT	41 min
Jan 24, 1:57 AM CST	Winter Weather Advisory	LOT	52 hr
Jan 27, 2:28 PM CST	Winter Weather Advisory	LOT	40 hr
Jan 30, 12:03 AM CST	Winter Weather Advisory	LOT	8 hr
Feb 2, 2:53 AM CST	Wind Chill Advisory	LOT	31 hr
Feb 14, 4:03 AM CST	Wind Advisory	LOT	34 hr
Feb 15, 3:35 AM CST	Winter Weather Advisory	LOT	53 hr
Feb 16, 3:18 AM CST	Lakeshore Flood Advisory	LOT	24 hr
Feb 21, 3:00 PM CST	Winter Weather Advisory	LOT	36 hr
Feb 22, 9:12 AM CST	River Flood Watch	LOT	11 hr
Feb 23, 4:19 AM CST	Dense Fog Advisory	LOT	5 hr
Feb 27, 9:14 AM CST	Wind Advisory	LOT	3 hr
Feb 27, 9:59 AM CST	Areal Flood Advisory	LOT	4 hr
Feb 27, 10:44 AM CST	River Flood Warning	LOT	47 hr
Mar 1, 9:19 AM CST	River Flood Warning	LOT	10 hr
Mar 2, 2:39 AM CST	Winter Storm Watch	LOT	18 hr
Mar 2, 8:38 PM CST	Winter Weather Advisory	LOT	22 hr
Mar 4, 10:24 PM CST	Dense Fog Advisory	LOT	11 hr
Mar 8, 2:54 PM CST	Winter Weather Advisory	LOT	40 hr
Mar 24, 3:08 AM CDT	Winter Weather Advisory	LOT	30 hr
Mar 26, 5:05 PM CDT	Severe Thunderstorm Warning	LOT	26 min
Mar 31, 1:48 AM CDT	Special Weather Statement	LOT	27 min
Mar 31, 3:06 AM CDT	Wind Advisory	LOT	37 hr
Mar 31, 2:07 PM CDT	Mesoscale Discussion	SPC	83 min
Mar 31, 2:36 PM CDT	Tornado Watch	SPC	7 hr
Mar 31, 3:50 PM CDT	Mesoscale Discussion	SPC	55 min
Mar 31, 4:33 PM CDT	Severe Thunderstorm Warning	LOT	57 min
Mar 31, 6:06 PM CDT	Severe Thunderstorm Warning	LOT	54 min
Mar 31, 6:09 PM CDT	Areal Flood Advisory	LOT	4 hr
Mar 31, 6:13 PM CDT	Flash Flood Warning	LOT	58 min
Mar 31, 6:20 PM CDT	Mesoscale Discussion	SPC	115 min
Mar 31, 7:01 PM CDT	Flood Watch	LOT	2 hr
Mar 31, 7:09 PM CDT	Flash Flood Warning Considerable damage threat	LOT	4 hr
Mar 31, 7:52 PM CDT	Severe Thunderstorm Warning Destructive damage threat	LOT	68 min
Mar 31, 7:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 8:34 PM CDT	Tornado Warning	LOT	11 min
Mar 31, 11:04 PM CDT	River Flood Warning	LOT	22 hr
Apr 4, 10:36 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 4, 12:53 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 4, 1:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	89 min
Apr 4, 1:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	70 min
Apr 4, 2:28 PM CDT	Severe Thunderstorm Warning	LOT	16 min
Apr 4, 3:42 PM CDT	Wind Advisory	LOT	24 hr
Apr 4, 7:04 PM CDT	River Flood Warning	LOT	40 hr
Apr 5, 3:27 AM CDT	Mesoscale Discussion	SPC	93 min
Apr 5, 3:57 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 5, 5:17 AM CDT	Special Weather Statement	LOT	28 min
Apr 5, 5:47 AM CDT	Special Weather Statement	LOT	13 min
Apr 5, 6:54 AM CDT	Severe Thunderstorm Warning	LOT	36 min
Apr 11, 3:19 AM CDT	Fire Weather Watch	LOT	23 hr
Apr 12, 2:40 AM CDT	Red Flag Warning	LOT	16 hr
Apr 15, 2:00 PM CDT	Special Weather Statement	LOT	60 min
Apr 15, 3:11 PM CDT	Freeze Watch	LOT	13 hr
Apr 17, 2:43 PM CDT	Freeze Warning	LOT	17 hr
Apr 20, 2:06 PM CDT	Tornado Watch	SPC	6 hr
Apr 20, 5:23 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 20, 5:40 PM CDT	Severe Thunderstorm Warning	LOT	50 min
Apr 20, 6:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	26 min
Apr 20, 6:28 PM CDT	Severe Thunderstorm Warning	LOT	50 min
Apr 22, 1:56 PM CDT	Freeze Watch	LOT	13 hr
Apr 23, 2:56 AM CDT	Freeze Warning	LOT	29 hr
Apr 25, 1:41 PM CDT	Frost Advisory	LOT	18 hr
Apr 25, 1:41 PM CDT	Freeze Warning	LOT	18 hr
Apr 26, 2:28 PM CDT	Frost Advisory	LOT	17 hr
May 12, 5:33 PM CDT	Areal Flood Advisory	LOT	117 min
May 24, 4:15 AM CDT	Beach Hazards Statement	LOT	32 hr
Jun 7, 3:40 AM CDT	Beach Hazards Statement	LOT	24 hr
Jun 10, 3:51 AM CDT	Beach Hazards Statement	LOT	59 hr
Jun 14, 2:59 PM CDT	Beach Hazards Statement	LOT	54 hr
Jun 25, 1:28 AM CDT	Special Weather Statement	LOT	47 min
Jun 25, 2:04 AM CDT	Severe Thunderstorm Warning	LOT	24 min
Jun 25, 12:23 PM CDT	Special Weather Statement	LOT	22 min
Jun 26, 10:37 AM CDT	Beach Hazards Statement	LOT	38 hr
Jun 29, 10:34 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 29, 12:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 1, 4:47 PM CDT	Special Weather Statement	LOT	28 min
Jul 1, 5:26 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 2, 6:55 AM CDT	Areal Flood Advisory	LOT	4 hr
Jul 2, 9:16 AM CDT	Flash Flood Warning	LOT	4 hr
Jul 2, 10:15 AM CDT	Flash Flood Warning Considerable damage threat	LOT	4 hr
Jul 2, 2:38 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 2, 2:38 PM CDT	Flash Flood Warning	LOT	4 hr
Jul 2, 3:06 PM CDT	Beach Hazards Statement	LOT	6 hr
Jul 2, 4:02 PM CDT	River Flood Warning	LOT	13 hr
Jul 2, 4:31 PM CDT	Areal Flood Advisory	LOT	119 min
Jul 2, 6:25 PM CDT	Areal Flood Warning	LOT	7 hr
Jul 5, 11:32 AM CDT	Flood Watch	LOT	9 hr
Jul 5, 12:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 5, 1:51 PM CDT	Special Weather Statement	LOT	39 min
Jul 5, 2:41 PM CDT	Special Weather Statement	LOT	34 min
Jul 5, 2:50 PM CDT	Severe Thunderstorm Warning	LOT	40 min
Jul 5, 3:55 PM CDT	Severe Thunderstorm Warning	LOT	35 min
Jul 5, 5:49 PM CDT	Severe Thunderstorm Warning	LOT	26 min
Jul 5, 6:00 PM CDT	Areal Flood Advisory	LOT	4 hr
Jul 5, 6:14 PM CDT	Special Weather Statement	LOT	46 min
Jul 5, 6:25 PM CDT	Severe Thunderstorm Warning	LOT	35 min
Jul 5, 6:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	38 min
Jul 5, 7:07 PM CDT	Flash Flood Warning	LOT	3 hr
Jul 11, 2:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	27 min
Jul 11, 2:41 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 11, 3:09 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 12, 3:49 AM CDT	Flood Watch	LOT	15 hr
Jul 12, 4:24 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 12, 10:42 AM CDT	River Flood Warning	LOT	20 hr
Jul 12, 1:20 PM CDT	Flash Flood Warning	LOT	3 hr
Jul 12, 3:05 PM CDT	Mesoscale Discussion	SPC	85 min
Jul 12, 3:53 PM CDT	Tornado Watch	SPC	5 hr
Jul 12, 6:10 PM CDT	Tornado Warning	LOT	20 min
Jul 12, 6:20 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	LOT	23 min
Jul 12, 6:31 PM CDT	Tornado Warning	LOT	29 min
Jul 12, 6:51 PM CDT	Tornado Warning	LOT	24 min
Jul 12, 7:00 PM CDT	Tornado Warning	LOT	32 min
Jul 12, 7:02 PM CDT	Mesoscale Discussion	SPC	58 min
Jul 12, 8:10 PM CDT	Beach Hazards Statement	LOT	14 hr
Jul 14, 2:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 14, 8:23 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 14, 8:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	63 min
Jul 14, 9:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	54 min
Jul 14, 9:30 PM CDT	Severe Thunderstorm Warning	LOT	33 min
Jul 26, 3:50 AM CDT	Heat Advisory	LOT	65 hr
Jul 26, 8:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	64 min
Jul 26, 9:08 AM CDT	Severe Thunderstorm Warning	LOT	37 min
Jul 26, 3:57 PM CDT	Mesoscale Discussion	SPC	63 min
Jul 27, 4:06 AM CDT	Dense Fog Advisory	LOT	4 hr
Jul 28, 2:52 AM CDT	Mesoscale Discussion	SPC	113 min
Jul 28, 7:21 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 28, 7:36 PM CDT	Flood Watch	LOT	5 hr
Jul 28, 7:37 PM CDT	Severe Thunderstorm Warning	LOT	38 min
Jul 28, 8:12 PM CDT	Severe Thunderstorm Warning	LOT	48 min
Jul 28, 8:47 PM CDT	Areal Flood Advisory	LOT	4 hr
Jul 28, 8:54 PM CDT	Special Weather Statement	LOT	66 min
Jul 28, 10:23 PM CDT	Severe Thunderstorm Warning	LOT	67 min
Jul 28, 10:55 PM CDT	Severe Thunderstorm Warning	LOT	50 min
Jul 28, 11:01 PM CDT	Flash Flood Warning	LOT	108 min
Jul 29, 3:25 AM CDT	Beach Hazards Statement	LOT	16 hr
Aug 4, 3:55 AM CDT	Beach Hazards Statement	LOT	24 hr
Aug 5, 3:47 PM CDT	Beach Hazards Statement	LOT	53 hr
Aug 14, 3:20 AM CDT	Flood Watch	LOT	18 hr
Aug 14, 3:42 AM CDT	Beach Hazards Statement	LOT	42 hr
Aug 14, 11:13 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 14, 6:01 PM CDT	Areal Flood Advisory	LOT	119 min
Aug 14, 7:22 PM CDT	Areal Flood Advisory	LOT	2 hr
Aug 14, 10:01 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 17, 4:41 AM CDT	Mesoscale Discussion	SPC	3 hr
Aug 19, 2:47 AM CDT	Heat Advisory	LOT	41 hr
Aug 21, 2:47 AM CDT	Excessive Heat Watch	LOT	48 hr
Aug 22, 2:59 AM CDT	Excessive Heat Warning	LOT	65 hr
Aug 25, 3:25 AM CDT	Beach Hazards Statement	LOT	10 hr
Aug 25, 2:48 PM CDT	Beach Hazards Statement	LOT	55 hr
Aug 28, 2:58 PM CDT	Beach Hazards Statement	LOT	67 hr
Sep 6, 5:55 AM CDT	Areal Flood Advisory	LOT	3 hr
Sep 6, 6:17 AM CDT	Flash Flood Warning	LOT	3 hr
Sep 6, 3:27 PM CDT	Beach Hazards Statement	LOT	58 hr
Sep 11, 3:21 PM CDT	Beach Hazards Statement	LOT	37 hr
Sep 17, 3:55 AM CDT	Beach Hazards Statement	LOT	29 hr
Sep 17, 6:02 AM CDT	Areal Flood Advisory	LOT	3 hr
Sep 17, 7:26 AM CDT	Flash Flood Warning	LOT	5 hr
Sep 17, 10:07 AM CDT	Flash Flood Warning	LOT	7 hr
Sep 17, 10:50 AM CDT	Flash Flood Warning Considerable damage threat	LOT	3 hr
Sep 17, 4:57 PM CDT	Areal Flood Warning	LOT	16 hr
Sep 18, 8:57 AM CDT	Areal Flood Advisory	LOT	2 hr
Sep 23, 10:34 PM CDT	Beach Hazards Statement	LOT	14 hr
Sep 26, 9:42 AM CDT	Areal Flood Advisory	LOT	109 min
Sep 26, 9:43 AM CDT	Beach Hazards Statement	LOT	36 hr
Sep 29, 1:34 AM CDT	Dense Fog Advisory	LOT	7 hr
Oct 9, 2:04 PM CDT	Frost Advisory	LOT	18 hr
Oct 10, 2:18 PM CDT	Frost Advisory	LOT	18 hr
Oct 29, 3:24 AM CDT	Freeze Warning	LOT	30 hr
Oct 30, 8:34 AM CDT	Freeze Warning	LOT	24 hr
Oct 31, 2:45 PM CDT	Winter Weather Advisory	LOT	14 hr
Nov 5, 12:33 AM CDT	Dense Fog Advisory	LOT	10 hr
Nov 25, 2:10 PM CST	Winter Weather Advisory	LOT	22 hr
Dec 18, 4:58 AM CST	Special Weather Statement	LOT	2 hr
Dec 22, 11:35 PM CST	Dense Fog Advisory	LOT	12 hr
Dec 23, 3:29 PM CST	Dense Fog Advisory	LOT	21 hr
Dec 30, 6:56 AM CST	Dense Fog Advisory	LOT	5 hr
Dec 30, 6:15 PM CST	Winter Weather Advisory	LOT	17 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	27
Tornado Warning	6
Severe Thunderstorm Watch	5
Tornado Watch	3
Mesoscale Discussion	19
Special Weather Statement	13
Flooding
Areal Flood Warning	2
Flash Flood Warning	12
River Flood Warning	6
Flood Watch	5
River Flood Watch	1
Areal Flood Advisory	18
Winter
Winter Storm Watch	1
Winter Weather Advisory	11
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	2
Cold
Freeze Warning	5
Freeze Watch	2
Frost Advisory	4
Wind Chill Advisory	1
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	11
Coast and beach
Lakeshore Flood Advisory	1
Beach Hazards Statement	19

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

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.