Alert archive / Minnesota / Koochiching County

Weather alerts in Koochiching County, Minnesota, 2023

110 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Koochiching County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
110
Warnings
17
Watches
11
Advisories
30
Busiest month
June26 alerts
Busiest day
July 19, 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.

Koochiching County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings6267%1100%1 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 16, 1:47 AM CSTWinter Weather AdvisoryDLH32 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 3, 9:54 AM CSTWind Chill AdvisoryDLH2 hr
Feb 14, 2:38 AM CSTWinter Weather AdvisoryDLH35 hr
Feb 16, 1:21 PM CSTWind Chill AdvisoryDLH20 hr
Feb 19, 3:05 AM CSTWinter Weather AdvisoryDLH42 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
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 15, 3:08 PM CDTWinter Weather AdvisoryDLH36 hr
Mar 20, 4:00 AM CDTWinter Storm WatchDLH24 hr
Mar 20, 3:59 PM CDTWinter Storm WarningDLH45 hr
Mar 21, 7:34 PM CDTMesoscale DiscussionSPC5 hr
Apr 2, 3:44 AM CDTWinter Storm WatchDLH35 hr
Apr 3, 2:48 PM CDTBlizzard WarningDLH36 hr
Apr 3, 2:48 PM CDTWinter Storm WarningDLH45 hr
Apr 5, 9:59 AM CDTWinter Weather AdvisoryDLH8 hr
Apr 13, 3:43 PM CDTAreal Flood AdvisoryDLH66 hr
Apr 16, 9:30 AM CDTAreal Flood AdvisoryDLH8 days
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, 5:30 AM CDTDense Fog AdvisoryDLH6 hr
May 1, 3:05 PM CDTFire Weather WatchDLH13 hr
May 2, 4:27 AM CDTRed Flag WarningDLH16 hr
May 13, 2:45 PM CDTFire Weather WatchDLH38 hr
May 27, 1:29 PM CDTRed Flag WarningDLH8 hr
May 27, 2:30 PM CDTFire Weather WatchDLH12 hr
May 28, 2:32 AM CDTRed Flag WarningDLH18 hr
May 28, 2:40 PM CDTFire Weather WatchDLH13 hr
May 30, 3:05 PM CDTMesoscale DiscussionSPC2 hr
May 31, 8:28 PM CDTSpecial Weather StatementDLH32 min
May 31, 9:29 PM CDTSpecial Weather StatementDLH16 min
Jun 1, 2:47 AM CDTSpecial Weather StatementDLH13 min
Jun 1, 7:55 PM CDTSpecial Weather StatementDLH20 min
Jun 4, 4:17 PM CDTSpecial Weather StatementDLH28 min
Jun 9, 4:23 PM CDTSpecial Weather StatementDLH37 min
Jun 9, 5:29 PM CDTSpecial Weather StatementDLH31 min
Jun 22, 3:21 PM CDTSpecial Weather StatementDLH24 min
Jun 22, 4:20 PM CDTSpecial Weather StatementDLH25 min
Jun 22, 4:32 PM CDTSpecial Weather StatementDLH28 min
Jun 22, 4:43 PM CDTSpecial Weather StatementDLH17 min
Jun 22, 4:57 PM CDTSpecial Weather StatementDLH33 min
Jun 22, 5:28 PM CDTSpecial Weather StatementDLH17 min
Jun 27, 1:10 PM CDTSpecial Weather StatementDLH35 min
Jun 27, 1:20 PM CDTSpecial Weather StatementDLH25 min
Jun 27, 1:25 PM CDTSpecial Weather StatementDLH35 min
Jun 27, 1:44 PM CDTSpecial Weather StatementDLH31 min
Jun 27, 1:55 PM CDTSpecial Weather StatementDLH20 min
Jun 27, 2:52 PM CDTSpecial Weather StatementDLH23 min
Jun 27, 3:23 PM CDTSpecial Weather StatementDLH22 min
Jun 27, 4:05 PM CDTSpecial Weather StatementDLH25 min
Jun 28, 7:27 PM CDTDense Fog AdvisoryDLH13 hr
Jun 29, 1:18 PM CDTSpecial Weather StatementDLH27 min
Jun 29, 1:37 PM CDTSpecial Weather StatementDLH23 min
Jun 29, 1:50 PM CDTSpecial Weather StatementDLH25 min
Jun 29, 2:59 PM CDTSpecial Weather StatementDLH16 min
Jul 19, 2:41 PM CDTMesoscale DiscussionSPC94 min
Jul 19, 2:52 PM CDTSevere Thunderstorm WarningDLH38 min
Jul 19, 3:16 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 19, 3:35 PM CDTSevere Thunderstorm WarningDLH40 min
Jul 19, 3:46 PM CDTSpecial Weather StatementDLH14 min
Jul 19, 4:08 PM CDTSpecial Weather StatementDLH37 min
Jul 19, 4:15 PM CDTSpecial Weather StatementDLH30 min
Jul 19, 4:43 PM CDTSpecial Weather StatementDLH32 min
Jul 19, 5:12 PM CDTSpecial Weather StatementDLH33 min
Jul 19, 5:17 PM CDTMesoscale DiscussionSPC88 min
Jul 22, 12:44 PM CDTSpecial Weather StatementDLH31 min
Jul 22, 1:08 PM CDTSpecial Weather StatementDLH37 min
Jul 22, 4:12 PM CDTSpecial Weather StatementDLH33 min
Jul 27, 12:19 AM CDTSevere Thunderstorm WarningDLH41 min
Jul 27, 12:53 AM CDTMesoscale DiscussionSPC2 hr
Jul 27, 12:57 AM CDTSpecial Weather StatementDLH33 min
Jul 27, 1:11 AM CDTSpecial Weather StatementDLH34 min
Aug 1, 3:05 PM CDTSpecial Weather StatementDLH25 min
Aug 1, 3:42 PM CDTSpecial Weather StatementDLH33 min
Aug 1, 4:10 PM CDTSpecial Weather StatementDLH35 min
Aug 8, 2:50 PM CDTSpecial Weather StatementDLH25 min
Aug 8, 2:54 PM CDTSevere Thunderstorm WarningDLH51 min
Aug 8, 3:30 PM CDTSpecial Weather StatementDLH15 min
Aug 8, 3:40 PM CDTSevere Thunderstorm WarningDLH50 min
Aug 8, 3:42 PM CDTMesoscale DiscussionSPC93 min
Aug 8, 3:53 PM CDTSpecial Weather StatementDLH22 min
Aug 8, 4:14 PM CDTSpecial Weather StatementDLH31 min
Aug 8, 4:46 PM CDTSpecial Weather StatementDLH29 min
Aug 8, 5:16 PM CDTSpecial Weather StatementDLH29 min
Aug 8, 5:43 PM CDTSevere Thunderstorm WarningDLH47 min
Aug 8, 9:01 PM CDTSpecial Weather StatementDLH29 min
Aug 25, 1:58 AM CDTSpecial Weather StatementDLH32 min
Sep 12, 2:51 AM CDTFrost AdvisoryDLH29 hr
Sep 17, 5:09 AM CDTDense Fog AdvisoryDLH6 hr
Sep 29, 7:40 PM CDTDense Fog 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
Dec 22, 3:03 PM CSTDense Fog AdvisoryDLH42 hr
Dec 24, 2:39 PM CSTWinter Weather AdvisoryDLH61 hr
Dec 28, 8:08 PM CSTDense Fog AdvisoryDLH10 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.