Weather alerts in Cook County, Minnesota, 2025

135 weather alerts in 2025, 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 2025. Tap one for its archive.

Alerts: 135
Warnings: 31
Watches: 22
Advisories: 80
Busiest month: January20 alerts
Busiest day: December 27, 20255 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Cook County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	7	4	43%	7	14%	39 min
Flash flood warnings	1	1	0%	1	100%	17 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Duluth, MN: tornado warnings	25	4	84%	6	83%	17 min
NWS Duluth, MN: severe thunderstorm warnings	108	58	46%	226	74%	31 min
NWS Duluth, MN: flash flood warnings	14	8	43%	26	81%	78 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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 3, 1:25 PM CST	Cold Weather Advisory	DLH	21 hr
Jan 3, 1:25 PM CST	Wind Advisory	DLH	21 hr
Jan 4, 1:22 PM CST	Cold Weather Advisory	DLH	21 hr
Jan 5, 8:22 PM CST	Wind Advisory	DLH	7 hr
Jan 10, 2:03 PM CST	Winter Weather Advisory	DLH	67 hr
Jan 11, 11:42 AM CST	Winter Storm Warning	DLH	22 hr
Jan 12, 1:36 PM CST	Cold Weather Advisory	DLH	21 hr
Jan 12, 7:35 PM CST	Wind Advisory	DLH	13 hr
Jan 17, 8:54 AM CST	Wind Advisory	DLH	21 hr
Jan 17, 10:14 AM CST	Winter Weather Advisory	DLH	8 hr
Jan 17, 1:06 PM CST	Cold Weather Advisory	DLH	29 hr
Jan 17, 1:06 PM CST	Extreme Cold Warning	DLH	4 days
Jan 21, 8:20 PM CST	Winter Weather Advisory	DLH	12 hr
Jan 22, 1:50 PM CST	Cold Weather Advisory	DLH	18 hr
Jan 25, 2:02 PM CST	Wind Advisory	DLH	9 hr
Jan 26, 1:14 PM CST	Wind Advisory	DLH	27 hr
Jan 27, 1:36 PM CST	Winter Weather Advisory	DLH	32 hr
Jan 30, 1:36 PM CST	Winter Storm Watch	DLH	24 hr
Jan 31, 1:27 PM CST	Winter Storm Warning	DLH	41 hr
Jan 31, 1:27 PM CST	Winter Weather Advisory	DLH	41 hr
Feb 3, 1:26 PM CST	Cold Weather Advisory	DLH	20 hr
Feb 4, 3:10 PM CST	Winter Weather Advisory	DLH	39 hr
Feb 5, 2:23 PM CST	Winter Storm Warning	DLH	16 hr
Feb 9, 1:32 PM CST	Cold Weather Advisory	DLH	45 hr
Feb 11, 2:02 PM CST	Cold Weather Advisory	DLH	20 hr
Feb 12, 1:43 PM CST	Cold Weather Advisory	DLH	20 hr
Feb 16, 2:22 AM CST	Cold Weather Advisory	DLH	34 hr
Feb 16, 2:22 AM CST	Extreme Cold Watch	DLH	24 hr
Feb 16, 2:22 AM CST	Extreme Cold Warning	DLH	34 hr
Feb 17, 2:12 AM CST	Extreme Cold Warning	DLH	32 hr
Feb 24, 2:03 AM CST	Winter Weather Advisory	DLH	3 hr
Feb 27, 2:09 AM CST	Winter Storm Warning	DLH	34 hr
Mar 3, 2:15 AM CST	Winter Weather Advisory	DLH	32 hr
Mar 4, 2:02 PM CST	Wind Advisory	DLH	22 hr
Mar 10, 2:28 AM CDT	Wind Advisory	DLH	27 hr
Mar 14, 8:29 PM CDT	Wind Advisory	DLH	32 hr
Mar 15, 10:27 PM CDT	High Wind Warning	DLH	6 hr
Mar 21, 2:28 AM CDT	Winter Storm Watch	DLH	25 hr
Mar 22, 3:12 AM CDT	Winter Storm Warning	DLH	58 hr
Mar 22, 3:12 AM CDT	Winter Weather Advisory	DLH	58 hr
Mar 26, 3:01 PM CDT	Winter Storm Watch	DLH	22 hr
Mar 27, 3:06 AM CDT	Winter Weather Advisory	DLH	52 hr
Mar 28, 3:54 PM CDT	Ice Storm Warning	DLH	8 hr
Mar 30, 7:33 PM CDT	Winter Storm Watch	DLH	31 hr
Apr 1, 2:47 AM CDT	Winter Storm Warning	DLH	51 hr
Apr 2, 1:53 PM CDT	Blizzard Warning	DLH	7 hr
Apr 13, 1:51 PM CDT	Wind Advisory	DLH	43 hr
Apr 13, 1:51 PM CDT	Winter Weather Advisory	DLH	39 hr
Apr 22, 1:49 PM CDT	Dense Fog Advisory	DLH	20 hr
Apr 28, 6:15 PM CDT	Areal Flood Advisory	DLH	6 hr
Apr 29, 5:29 AM CDT	Wind Advisory	DLH	5 hr
May 3, 3:36 AM CDT	Dense Fog Advisory	DLH	5 hr
May 8, 2:27 PM CDT	Fire Weather Watch	DLH	48 hr
May 10, 2:24 PM CDT	Fire Weather Watch	DLH	24 hr
May 10, 2:24 PM CDT	Red Flag Warning	DLH	32 hr
May 11, 2:18 PM CDT	Red Flag Warning	DLH	31 hr
May 12, 1:59 PM CDT	Fire Weather Watch	DLH	13 hr
May 13, 3:25 AM CDT	Red Flag Warning	DLH	18 hr
May 17, 3:38 AM CDT	Freeze Watch	DLH	11 hr
May 17, 2:13 PM CDT	Freeze Warning	DLH	19 hr
May 18, 2:39 PM CDT	Freeze Warning	DLH	17 hr
May 19, 11:23 AM CDT	Wind Advisory	DLH	38 hr
May 19, 1:29 PM CDT	Fire Weather Watch	DLH	14 hr
May 20, 3:18 AM CDT	Red Flag Warning	DLH	18 hr
May 21, 3:11 AM CDT	Frost Advisory	DLH	29 hr
May 22, 3:03 AM CDT	Frost Advisory	DLH	30 hr
May 23, 11:32 AM CDT	Frost Advisory	DLH	20 hr
May 24, 2:40 PM CDT	Frost Advisory	DLH	17 hr
Jun 13, 3:39 PM CDT	Frost Advisory	DLH	17 hr
Jun 18, 2:23 PM CDT	Extreme Heat Watch	DLH	37 hr
Jun 20, 2:56 AM CDT	Heat Advisory	DLH	66 hr
Jun 20, 2:06 PM CDT	Flood Watch	DLH	15 hr
Jun 20, 11:18 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 21, 12:56 AM CDT	Severe Thunderstorm Warning	DLH	64 min
Jun 21, 2:53 AM CDT	Severe Thunderstorm Warning	DLH	67 min
Jun 21, 3:51 AM CDT	Areal Flood Advisory	DLH	10 hr
Jun 23, 4:27 AM CDT	Severe Thunderstorm Warning	DLH	63 min
Jul 3, 2:15 AM CDT	Heat Advisory	DLH	42 hr
Jul 4, 2:58 AM CDT	Flood Watch	DLH	31 hr
Jul 4, 9:04 AM CDT	Severe Thunderstorm Warning	DLH	26 min
Jul 15, 4:38 AM CDT	Flood Watch	DLH	19 hr
Jul 21, 2:36 PM CDT	Flood Watch	DLH	54 hr
Jul 23, 3:05 AM CDT	Areal Flood Advisory	DLH	3 hr
Jul 23, 1:29 PM CDT	Areal Flood Advisory	DLH	4 hr
Jul 25, 2:28 PM CDT	Heat Advisory	DLH	30 hr
Jul 26, 3:35 PM CDT	Severe Thunderstorm Warning	DLH	55 min
Jul 27, 2:52 AM CDT	Flood Watch	DLH	19 hr
Jul 27, 5:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 7, 4:12 AM CDT	Dense Fog Advisory	DLH	6 hr
Aug 7, 1:01 PM CDT	Heat Advisory	DLH	7 hr
Aug 9, 2:40 AM CDT	Mesoscale Discussion	SPC	95 min
Aug 9, 6:16 AM CDT	Severe Thunderstorm Warning	DLH	59 min
Aug 9, 7:15 AM CDT	Areal Flood Advisory	DLH	4 hr
Aug 9, 8:13 AM CDT	Flash Flood Warning	DLH	4 hr
Aug 18, 9:16 PM CDT	Dense Fog Advisory	DLH	12 hr
Aug 24, 2:28 AM CDT	Frost Advisory	DLH	30 hr
Aug 25, 12:34 PM CDT	Frost Advisory	DLH	20 hr
Sep 3, 1:55 PM CDT	Frost Advisory	DLH	18 hr
Sep 5, 12:43 PM CDT	Frost Advisory	DLH	20 hr
Sep 6, 2:05 PM CDT	Frost Advisory	DLH	18 hr
Sep 9, 2:50 AM CDT	Dense Fog Advisory	DLH	9 hr
Sep 9, 7:06 PM CDT	Dense Fog Advisory	DLH	16 hr
Sep 10, 1:40 PM CDT	Dense Fog Advisory	DLH	23 hr
Sep 11, 1:26 PM CDT	Dense Fog Advisory	DLH	23 hr
Sep 13, 4:31 AM CDT	Dense Fog Advisory	DLH	7 hr
Sep 16, 5:24 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 16, 7:11 PM CDT	Severe Thunderstorm Warning	DLH	49 min
Sep 20, 8:10 PM CDT	Dense Fog Advisory	DLH	15 hr
Sep 21, 11:07 AM CDT	Dense Fog Advisory	DLH	48 hr
Sep 23, 7:05 PM CDT	Dense Fog Advisory	DLH	15 hr
Sep 24, 9:14 PM CDT	Dense Fog Advisory	DLH	13 hr
Oct 3, 12:10 AM CDT	Dense Fog Advisory	DLH	9 hr
Oct 6, 1:29 PM CDT	Freeze Watch	DLH	13 hr
Oct 7, 2:30 AM CDT	Freeze Warning	DLH	32 hr
Nov 2, 1:43 AM CST	Wind Advisory	DLH	26 hr
Nov 23, 2:28 PM CST	Winter Storm Watch	DLH	24 hr
Nov 24, 2:16 PM CST	Winter Storm Warning	DLH	48 hr
Nov 26, 10:06 AM CST	Winter Weather Advisory	DLH	14 hr
Dec 7, 12:50 PM CST	Winter Weather Advisory	DLH	41 hr
Dec 11, 1:39 PM CST	Cold Weather Advisory	DLH	68 hr
Dec 15, 12:59 PM CST	Wind Advisory	DLH	38 hr
Dec 16, 2:05 PM CST	Winter Storm Watch	DLH	24 hr
Dec 17, 2:16 PM CST	Winter Weather Advisory	DLH	40 hr
Dec 17, 2:20 PM CST	High Wind Watch	DLH	19 hr
Dec 18, 9:38 AM CST	High Wind Warning	DLH	11 hr
Dec 18, 9:38 AM CST	Wind Advisory	DLH	18 hr
Dec 19, 1:38 PM CST	Winter Weather Advisory	DLH	16 hr
Dec 25, 2:43 AM CST	Winter Weather Advisory	DLH	32 hr
Dec 26, 6:48 PM CST	Winter Weather Advisory	DLH	17 hr
Dec 26, 8:51 PM CST	Dense Fog Advisory	DLH	33 hr
Dec 27, 10:18 AM CST	High Wind Warning	DLH	46 hr
Dec 27, 1:47 PM CST	Winter Storm Warning	DLH	37 hr
Dec 27, 1:47 PM CST	Winter Weather Advisory	DLH	37 hr
Dec 29, 8:00 AM CST	Wind Advisory	DLH	4 hr
Dec 31, 12:55 PM CST	Wind Advisory	DLH	16 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	7
Severe Thunderstorm Watch	2
Mesoscale Discussion	2
Flooding
Flash Flood Warning	1
Flood Watch	5
Areal Flood Advisory	5
Winter
Blizzard Warning	1
Ice Storm Warning	1
Winter Storm Warning	8
Winter Storm Watch	6
Winter Weather Advisory	18
Heat
Extreme Heat Watch	1
Heat Advisory	4
Cold
Extreme Cold Warning	3
Freeze Warning	3
Extreme Cold Watch	1
Freeze Watch	2
Cold Weather Advisory	11
Frost Advisory	10
Wind and dust
High Wind Warning	3
High Wind Watch	1
Wind Advisory	17
Fire
Red Flag Warning	4
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	15

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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. Warning verification from the Mesonet's Cow. Rebuilt daily.