Alert archive / Minnesota / Cook County

Weather alerts in Cook County, Minnesota, 2023

117 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
117
Warnings
21
Watches
14
Advisories
54
Busiest month
April18 alerts
Busiest day
July 26, 202310 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, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5260%650%18 min
Flash flood warnings00

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Duluth, MN: tornado warnings60100%0
NWS Duluth, MN: severe thunderstorm warnings855338%20167%23 min
NWS Duluth, MN: flash flood warnings6350%1560%44 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.

IssuedProductOfficeLasted
Jan 1, 3:30 AM CSTWinter Weather AdvisoryDLH9 hr
Jan 10, 3:23 AM CSTWinter Weather AdvisoryDLH30 hr
Jan 16, 1:47 AM CSTWinter Weather AdvisoryDLH32 hr
Jan 24, 2:40 PM CSTWinter Weather AdvisoryDLH23 hr
Jan 26, 1:40 PM CSTWinter Weather AdvisoryDLH20 hr
Jan 27, 1:39 PM CSTWind Chill AdvisoryDLH22 hr
Jan 28, 2:11 PM CSTWind Chill AdvisoryDLH23 hr
Jan 29, 1:53 PM CSTWind Chill AdvisoryDLH22 hr
Jan 30, 1:36 PM CSTWind Chill AdvisoryDLH20 hr
Jan 31, 1:36 PM CSTWind Chill WatchDLH24 hr
Jan 31, 1:36 PM CSTWind Chill AdvisoryDLH20 hr
Feb 1, 1:47 PM CSTWind Chill WarningDLH44 hr
Feb 1, 1:47 PM CSTWind Chill AdvisoryDLH46 hr
Feb 1, 1:50 PM CSTWind AdvisoryDLH34 hr
Feb 3, 9:54 AM CSTWind Chill AdvisoryDLH2 hr
Feb 6, 1:40 PM CSTWinter Weather AdvisoryDLH13 hr
Feb 14, 2:38 AM CSTWinter Weather AdvisoryDLH35 hr
Feb 14, 9:40 PM CSTWind AdvisoryDLH5 hr
Feb 16, 1:21 PM CSTWind Chill AdvisoryDLH20 hr
Feb 19, 3:05 AM CSTWinter Weather AdvisoryDLH42 hr
Feb 20, 3:04 AM CSTWinter Storm WarningDLH18 hr
Feb 21, 3:04 AM CSTWind Chill AdvisoryDLH31 hr
Feb 22, 2:20 PM CSTWind Chill AdvisoryDLH22 hr
Feb 23, 2:00 PM CSTWind Chill AdvisoryDLH19 hr
Feb 25, 2:51 PM CSTWinter Storm WatchDLH24 hr
Feb 26, 2:46 PM CSTWinter Storm WarningDLH30 hr
Feb 26, 2:46 PM CSTWinter Weather AdvisoryDLH28 hr
Feb 28, 3:16 AM CSTWinter Weather AdvisoryDLH41 hr
Mar 10, 3:19 AM CSTWinter Storm WatchDLH11 hr
Mar 10, 2:16 PM CSTWinter Storm WarningDLH61 hr
Mar 12, 12:39 PM CDTWinter Weather AdvisoryDLH15 hr
Mar 14, 3:21 AM CDTWinter Storm WatchDLH36 hr
Mar 15, 3:08 PM CDTWinter Storm WarningDLH70 hr
Mar 17, 3:16 AM CDTWinter Weather AdvisoryDLH24 hr
Mar 20, 4:00 AM CDTWinter Storm WatchDLH24 hr
Mar 20, 3:59 PM CDTWinter Storm WarningDLH45 hr
Mar 21, 4:14 AM CDTWinter Weather AdvisoryDLH33 hr
Mar 29, 2:34 PM CDTWinter Weather AdvisoryDLH43 hr
Apr 2, 3:44 AM CDTWinter Storm WatchDLH35 hr
Apr 3, 2:48 PM CDTWinter Storm WarningDLH45 hr
Apr 5, 5:03 AM CDTSpecial Weather StatementDLH27 min
Apr 5, 5:47 AM CDTSpecial Weather StatementDLH28 min
Apr 5, 6:14 AM CDTSpecial Weather StatementDLH31 min
Apr 5, 6:44 AM CDTSpecial Weather StatementDLH16 min
Apr 5, 9:59 AM CDTWinter Weather AdvisoryDLH8 hr
Apr 13, 3:43 PM CDTAreal Flood AdvisoryDLH66 hr
Apr 15, 2:48 AM CDTWinter Storm WatchDLH25 hr
Apr 15, 2:34 PM CDTWinter Storm WarningDLH54 hr
Apr 16, 9:30 AM CDTAreal Flood AdvisoryDLH8 days
Apr 16, 2:32 PM CDTBlizzard WarningDLH32 hr
Apr 17, 4:48 AM CDTMesoscale DiscussionSPC3 hr
Apr 19, 4:16 AM CDTWinter Storm WatchDLH11 hr
Apr 19, 3:00 PM CDTWinter Weather AdvisoryDLH52 hr
Apr 20, 3:01 AM CDTWinter Storm WarningDLH25 hr
Apr 27, 12:10 PM CDTFlood WatchDLH50 hr
Apr 29, 2:35 PM CDTWind AdvisoryDLH70 hr
May 5, 1:56 PM CDTAreal Flood AdvisoryDLH10 days
May 13, 2:45 PM CDTFire Weather WatchDLH38 hr
May 19, 3:20 PM CDTFrost AdvisoryDLH16 hr
May 24, 2:41 PM CDTFrost AdvisoryDLH16 hr
May 25, 1:54 PM CDTFrost AdvisoryDLH17 hr
May 28, 2:32 AM CDTRed Flag WarningDLH18 hr
May 28, 2:40 PM CDTFire Weather WatchDLH13 hr
May 29, 10:33 AM CDTRed Flag WarningDLH9 hr
Jun 28, 7:27 PM CDTDense Fog AdvisoryDLH13 hr
Jul 3, 1:58 PM CDTSevere Thunderstorm WarningDLH24 min
Jul 3, 3:07 PM CDTMesoscale DiscussionSPC113 min
Jul 9, 7:46 PM CDTSevere Thunderstorm WarningDLH44 min
Jul 9, 8:30 PM CDTSevere Thunderstorm WarningDLH15 min
Jul 14, 6:37 PM CDTSpecial Weather StatementDLH8 min
Jul 25, 8:34 PM CDTSevere Thunderstorm WarningDLH41 min
Jul 25, 9:14 PM CDTSpecial Weather StatementDLH16 min
Jul 25, 9:27 PM CDTSpecial Weather StatementDLH33 min
Jul 25, 10:00 PM CDTSpecial Weather StatementDLH30 min
Jul 25, 10:20 PM CDTAreal Flood AdvisoryDLH3 hr
Jul 25, 10:49 PM CDTSpecial Weather StatementDLH11 min
Jul 25, 11:34 PM CDTSpecial Weather StatementDLH26 min
Jul 26, 12:49 AM CDTAreal Flood AdvisoryDLH3 hr
Jul 26, 4:25 AM CDTSpecial Weather StatementDLH35 min
Jul 26, 5:14 AM CDTSpecial Weather StatementDLH31 min
Jul 27, 4:46 AM CDTSpecial Weather StatementDLH14 min
Aug 8, 1:50 PM CDTSpecial Weather StatementDLH25 min
Aug 8, 5:19 PM CDTAreal Flood AdvisoryDLH3 hr
Aug 8, 8:32 PM CDTSpecial Weather StatementDLH28 min
Aug 11, 2:16 PM CDTDense Fog AdvisoryDLH19 hr
Aug 16, 3:39 PM CDTMesoscale DiscussionSPC3 hr
Aug 16, 5:55 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 23, 2:42 AM CDTDense Fog AdvisoryDLH7 hr
Aug 23, 11:09 PM CDTDense Fog AdvisoryDLH11 hr
Aug 25, 4:32 AM CDTSpecial Weather StatementDLH28 min
Aug 25, 10:36 AM CDTSpecial Weather StatementDLH24 min
Aug 25, 11:03 AM CDTSpecial Weather StatementDLH27 min
Aug 27, 1:27 AM CDTDense Fog AdvisoryDLH6 hr
Aug 28, 7:06 PM CDTSpecial Weather StatementDLH24 min
Aug 28, 7:29 PM CDTSpecial Weather StatementDLH46 min
Sep 5, 3:16 PM CDTMesoscale DiscussionSPC119 min
Sep 5, 3:53 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 5, 5:53 PM CDTSpecial Weather StatementDLH67 min
Sep 5, 6:26 PM CDTSevere Thunderstorm WarningDLH49 min
Sep 12, 2:51 AM CDTFrost AdvisoryDLH29 hr
Sep 13, 1:54 PM CDTFrost AdvisoryDLH17 hr
Sep 17, 5:09 AM CDTDense Fog AdvisoryDLH6 hr
Sep 21, 2:11 PM CDTSpecial Weather StatementDLH34 min
Sep 21, 2:22 PM CDTSpecial Weather StatementDLH23 min
Sep 22, 2:31 PM CDTSpecial Weather StatementDLH44 min
Oct 6, 2:37 AM CDTWind AdvisoryDLH14 hr
Oct 6, 8:55 PM CDTFrost AdvisoryDLH12 hr
Oct 7, 2:00 PM CDTFreeze WatchDLH24 hr
Oct 8, 2:06 PM CDTFreeze WarningDLH19 hr
Oct 9, 2:38 PM CDTFreeze WarningDLH18 hr
Nov 6, 2:17 PM CSTWinter Weather AdvisoryDLH43 hr
Nov 7, 10:25 PM CSTWinter Storm WarningDLH11 hr
Nov 16, 2:42 AM CSTWind AdvisoryDLH19 hr
Nov 16, 7:07 PM CSTHigh Wind WarningDLH3 hr
Dec 22, 3:03 PM CSTDense Fog AdvisoryDLH42 hr
Dec 24, 2:39 PM CSTWinter Weather AdvisoryDLH61 hr
Dec 30, 7:41 AM CSTWinter Weather AdvisoryDLH16 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20222024

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.