Alert archive / Michigan / Keweenaw County

Weather alerts in Keweenaw County, Michigan, 2026

67 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Keweenaw County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
67
Warnings
18
Watches
13
Advisories
29
Busiest month
January18 alerts
Busiest day
July 12, 20265 alerts

Over time

By month

Warning verification

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

Keweenaw County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4325%2100%23 min
Flash flood warnings00

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Marquette, MI: tornado warnings9367%6100%15 min
NWS Marquette, MI: severe thunderstorm warnings541965%6370%24 min
NWS Marquette, MI: flash flood warnings30100%0

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

The year is still running; reports filed late and damage surveys can still change these figures.

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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 4, 3:26 AM ESTWinter Weather AdvisoryMQT24 hr
Jan 10, 3:01 AM ESTWinter Weather AdvisoryMQT24 hr
Jan 12, 2:46 PM ESTWinter Weather AdvisoryMQT52 hr
Jan 15, 2:45 PM ESTWinter Weather AdvisoryMQT52 hr
Jan 17, 1:42 PM ESTWinter Storm WatchMQT12 hr
Jan 18, 1:51 AM ESTWinter Storm WarningMQT53 hr
Jan 18, 1:51 AM ESTWinter Weather AdvisoryMQT3 days
Jan 18, 1:57 AM ESTCold Weather AdvisoryMQT55 hr
Jan 20, 2:08 PM ESTExtreme Cold WatchMQT24 hr
Jan 21, 1:44 AM ESTWinter Weather AdvisoryMQT65 hr
Jan 21, 2:17 PM ESTExtreme Cold WarningMQT68 hr
Jan 21, 2:22 PM ESTExtreme Cold WatchMQT25 hr
Jan 22, 5:12 PM ESTBlizzard WarningMQT9 hr
Jan 23, 2:31 AM ESTWinter Storm WarningMQT24 hr
Jan 24, 2:30 AM ESTWinter Weather AdvisoryMQT8 hr
Jan 24, 9:11 AM ESTCold Weather AdvisoryMQT4 hr
Jan 24, 2:47 PM ESTCold Weather AdvisoryMQT43 hr
Jan 27, 2:15 AM ESTWinter Weather AdvisoryMQT65 hr
Feb 5, 1:48 PM ESTWinter Weather AdvisoryMQT41 hr
Feb 16, 2:36 AM ESTWinter Storm WatchMQT25 hr
Feb 17, 3:14 AM ESTWinter Storm WarningMQT52 hr
Feb 17, 3:14 AM ESTWinter Weather AdvisoryMQT58 hr
Feb 18, 5:16 AM ESTMesoscale DiscussionSPC4 hr
Feb 19, 2:22 PM ESTWinter Storm WarningMQT35 hr
Feb 19, 2:22 PM ESTWinter Weather AdvisoryMQT3 days
Feb 23, 2:35 PM ESTWinter Weather AdvisoryMQT26 hr
Feb 24, 2:19 PM ESTWinter Weather AdvisoryMQT29 hr
Feb 26, 1:24 AM ESTHigh Wind WatchMQT12 hr
Feb 26, 1:46 PM ESTWind AdvisoryMQT12 hr
Feb 27, 1:31 AM ESTHigh Wind WarningMQT23 hr
Mar 4, 10:59 PM ESTDense Fog AdvisoryMQT15 hr
Mar 10, 2:04 AM EDTWinter Weather AdvisoryMQT42 hr
Mar 11, 2:27 PM EDTWinter Storm WatchMQT13 hr
Mar 12, 2:57 AM EDTWinter Storm WarningMQT41 hr
Mar 12, 1:39 PM EDTLakeshore Flood AdvisoryMQT24 hr
Mar 13, 3:06 AM EDTMesoscale DiscussionSPC4 hr
Mar 13, 3:54 AM EDTWinter Storm WatchMQT23 hr
Mar 14, 2:40 AM EDTWinter Storm WarningMQT11 hr
Mar 14, 2:04 PM EDTBlizzard WarningMQT60 hr
Mar 14, 2:36 PM EDTLakeshore Flood WarningMQT65 hr
Mar 16, 9:54 AM EDTLakeshore Flood AdvisoryMQT16 hr
Mar 16, 1:46 PM EDTWind AdvisoryMQT12 hr
Mar 31, 3:43 PM EDTWinter Storm WatchMQT23 hr
Apr 1, 2:24 PM EDTWinter Storm WarningMQT42 hr
Apr 2, 1:04 AM EDTWinter Storm WatchMQT26 hr
Apr 3, 2:50 AM EDTWinter Storm WarningMQT35 hr
Apr 10, 11:05 AM EDTFlood WatchMQT8 days
Apr 14, 3:43 PM EDTDense Fog AdvisoryMQT18 hr
Apr 15, 2:35 PM EDTDense Fog AdvisoryMQT19 hr
Apr 22, 2:37 PM EDTFlood WatchMQT53 hr
May 20, 1:57 PM EDTFrost AdvisoryMQT19 hr
Jun 9, 10:01 PM EDTDense Fog AdvisoryMQT16 hr
Jun 29, 4:24 PM EDTMesoscale DiscussionSPC2 hr
Jun 29, 5:02 PM EDTSevere Thunderstorm WatchSPC4 hr
Jul 11, 2:43 PM EDTHeat AdvisoryMQT30 hr
Jul 12, 7:35 AM EDTSevere Thunderstorm WarningMQT40 min
Jul 12, 8:36 AM EDTMesoscale DiscussionSPC114 min
Jul 12, 9:30 AM EDTSevere Thunderstorm WarningMQT45 min
Jul 12, 10:13 AM EDTSevere Thunderstorm WarningMQT62 min
Jul 12, 2:31 PM EDTExtreme Heat WarningMQT55 hr
Jul 20, 8:49 AM EDTSevere Thunderstorm WarningMQT56 min
Jul 27, 6:26 AM EDTMesoscale DiscussionSPC2 hr
Aug 7, 4:11 PM EDTMesoscale DiscussionSPC2 hr
Aug 7, 4:50 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 7, 6:53 PM EDTMesoscale DiscussionSPC2 hr
Sep 1, 3:37 AM EDTDense Fog AdvisoryMQT7 hr
Sep 14, 1:22 PM EDTWind AdvisoryMQT31 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 archive2025

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.