Alert archive / Michigan / Lenawee County

Weather alerts in Lenawee County, Michigan, 2026

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

Lenawee County and its neighbors

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

Alerts
118
Warnings
17
Watches
20
Advisories
26
Busiest month
April26 alerts
Busiest day
April 15, 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.

0 of 2 tornado warnings covering Lenawee County in 2026 had a tornado report inside them.

Lenawee County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings11827%6100%20 min
Flash flood warnings00

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Detroit, MI: tornado warnings26869%1182%23 min
NWS Detroit, MI: severe thunderstorm warnings1308932%20388%23 min

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 6, 2:32 PM ESTDense Fog AdvisoryDTX5 hr
Jan 9, 2:28 AM ESTWind AdvisoryDTX14 hr
Jan 14, 2:18 PM ESTWinter Weather AdvisoryDTX20 hr
Jan 18, 2:45 PM ESTWinter Weather AdvisoryDTX43 hr
Jan 20, 2:29 PM ESTWinter Weather AdvisoryDTX23 hr
Jan 21, 3:00 PM ESTExtreme Cold WatchDTX12 hr
Jan 22, 2:56 AM ESTCold Weather AdvisoryDTX55 hr
Jan 24, 11:23 AM ESTWinter Weather AdvisoryDTX47 hr
Jan 25, 3:09 PM ESTCold Weather AdvisoryDTX43 hr
Feb 6, 2:30 AM ESTCold Weather AdvisoryDTX34 hr
Feb 18, 9:32 PM ESTDense Fog AdvisoryDTX14 hr
Feb 19, 2:56 PM ESTWind AdvisoryDTX29 hr
Mar 5, 5:45 AM ESTDense Fog AdvisoryDTX4 hr
Mar 10, 9:58 PM EDTSevere Thunderstorm WatchSPC5 hr
Mar 11, 12:49 AM EDTFlood WatchDTX13 hr
Mar 11, 1:46 AM EDTSpecial Weather StatementDTX44 min
Mar 11, 2:48 AM EDTSpecial Weather StatementDTX57 min
Mar 12, 2:27 AM EDTHigh Wind WatchDTX11 hr
Mar 12, 1:25 PM EDTHigh Wind WarningDTX35 hr
Mar 13, 12:42 PM EDTSpecial Weather StatementDTX63 min
Mar 14, 1:35 PM EDTWind AdvisoryDTX62 hr
Mar 16, 12:14 AM EDTMesoscale DiscussionSPC2 hr
Mar 26, 6:31 PM EDTSpecial Weather StatementDTX74 min
Mar 26, 7:02 PM EDTSevere Thunderstorm WarningDTX31 min
Mar 31, 11:55 AM EDTMesoscale DiscussionSPC2 hr
Mar 31, 12:43 PM EDTMesoscale DiscussionSPC3 hr
Apr 2, 9:41 PM EDTSpecial Weather StatementDTX34 min
Apr 4, 3:13 PM EDTSevere Thunderstorm WarningDTX48 min
Apr 4, 4:39 PM EDTMesoscale DiscussionSPC2 hr
Apr 4, 5:15 PM EDTSpecial Weather StatementDTX60 min
Apr 13, 6:09 PM EDTMesoscale DiscussionSPC96 min
Apr 13, 7:17 PM EDTSpecial Weather StatementDTX58 min
Apr 14, 9:41 AM EDTFlood WatchDTX59 hr
Apr 14, 8:54 PM EDTTornado WatchSPC6 hr
Apr 15, 1:28 AM EDTSevere Thunderstorm WarningDTX62 min
Apr 15, 1:55 AM EDTTornado WarningDTX31 min
Apr 15, 1:44 PM EDTMesoscale DiscussionSPC3 hr
Apr 15, 2:56 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 16, 4:33 PM EDTMesoscale DiscussionSPC57 min
Apr 16, 5:47 PM EDTSpecial Weather StatementDTX58 min
Apr 17, 2:46 AM EDTDense Fog AdvisoryDTX7 hr
Apr 18, 2:21 PM EDTFrost AdvisoryDTX20 hr
Apr 18, 2:21 PM EDTFreeze WatchDTX11 hr
Apr 19, 1:26 AM EDTFreeze WarningDTX34 hr
Apr 22, 12:37 PM EDTMesoscale DiscussionSPC2 hr
Apr 22, 3:03 PM EDTSpecial Weather StatementDTX57 min
Apr 22, 7:49 PM EDTAreal Flood AdvisoryDTX2 hr
Apr 24, 2:22 PM EDTMesoscale DiscussionSPC2 hr
Apr 24, 3:09 PM EDTSpecial Weather StatementDTX66 min
Apr 24, 3:24 PM EDTSevere Thunderstorm WarningDTX44 min
Apr 27, 5:46 PM EDTSpecial Weather StatementDTX74 min
Apr 30, 12:47 PM EDTFreeze WatchDTX24 hr
May 1, 12:58 PM EDTFreeze WarningDTX18 hr
May 2, 1:27 PM EDTFrost AdvisoryDTX18 hr
May 4, 4:42 PM EDTMesoscale DiscussionSPC2 hr
May 4, 5:58 PM EDTSpecial Weather StatementDTX62 min
May 5, 12:18 AM EDTSpecial Weather StatementDTX57 min
May 6, 1:22 PM EDTFrost AdvisoryDTX19 hr
May 9, 1:29 PM EDTMesoscale DiscussionSPC2 hr
May 11, 2:05 PM EDTFrost AdvisoryDTX18 hr
May 18, 12:38 PM EDTMesoscale DiscussionSPC67 min
May 18, 12:59 PM EDTSevere Thunderstorm WatchSPC5 hr
May 18, 3:16 PM EDTMesoscale DiscussionSPC89 min
May 18, 3:25 PM EDTSevere Thunderstorm WarningDTX80 min
May 19, 1:44 PM EDTMesoscale DiscussionSPC91 min
May 19, 2:01 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 9, 2:01 PM EDTHeat AdvisoryDTX30 hr
Jun 10, 7:40 PM EDTSevere Thunderstorm WatchSPC3 hr
Jun 10, 8:42 PM EDTSevere Thunderstorm WarningDTX48 min
Jun 11, 3:03 AM EDTHeat AdvisoryDTX12 hr
Jun 11, 8:08 PM EDTTornado WatchSPC6 hr
Jun 11, 11:49 PM EDTSevere Thunderstorm Warning Considerable damage threatDTX56 min
Jun 14, 11:05 AM EDTSpecial Weather StatementDTX25 min
Jun 14, 11:56 AM EDTSpecial Weather StatementDTX79 min
Jun 16, 1:22 PM EDTMesoscale DiscussionSPC113 min
Jun 17, 2:43 AM EDTFlood WatchDTX19 hr
Jun 25, 3:51 PM EDTSpecial Weather StatementDTX39 min
Jun 28, 1:28 PM EDTExtreme Heat WatchDTX24 hr
Jun 29, 1:57 PM EDTExtreme Heat WarningDTX4 days
Jul 3, 2:20 PM EDTMesoscale DiscussionSPC55 min
Jul 3, 2:35 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 3, 5:24 PM EDTSevere Thunderstorm WarningDTX58 min
Jul 3, 5:42 PM EDTMesoscale DiscussionSPC2 hr
Jul 5, 7:56 AM EDTAreal Flood AdvisoryDTX4 hr
Jul 9, 3:59 PM EDTSpecial Weather StatementDTX46 min
Jul 13, 1:50 AM EDTExtreme Heat WatchDTX11 hr
Jul 13, 12:54 PM EDTHeat AdvisoryDTX55 hr
Jul 18, 12:37 PM EDTMesoscale DiscussionSPC113 min
Jul 18, 1:20 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 21, 6:27 AM EDTSpecial Weather StatementDTX33 min
Jul 28, 12:50 AM EDTSevere Thunderstorm WarningDTX42 min
Aug 2, 1:57 AM EDTFlood WatchDTX12 hr
Aug 2, 9:33 AM EDTAreal Flood AdvisoryDTX4 hr
Aug 9, 4:39 PM EDTMesoscale DiscussionSPC2 hr
Aug 10, 5:09 AM EDTSpecial Weather StatementDTX51 min
Aug 10, 6:06 AM EDTSpecial Weather StatementDTX54 min
Aug 10, 11:42 PM EDTSpecial Weather StatementDTX33 min
Aug 10, 11:55 PM EDTSpecial Weather StatementDTX20 min
Aug 11, 3:54 AM EDTSpecial Weather StatementDTX66 min
Aug 11, 4:17 AM EDTSevere Thunderstorm WarningDTX47 min
Aug 11, 5:23 AM EDTSpecial Weather StatementDTX67 min
Aug 12, 4:02 AM EDTDense Fog AdvisoryDTX4 hr
Aug 21, 6:19 PM EDTSpecial Weather StatementDTX56 min
Aug 22, 2:11 PM EDTSpecial Weather StatementDTX49 min
Aug 26, 1:22 PM EDTMesoscale DiscussionSPC113 min
Sep 2, 2:08 AM EDTHeat AdvisoryDTX18 hr
Sep 2, 4:46 PM EDTMesoscale DiscussionSPC89 min
Sep 3, 1:44 PM EDTMesoscale DiscussionSPC3 hr
Sep 3, 1:59 PM EDTSevere Thunderstorm WatchSPC3 hr
Sep 3, 3:53 PM EDTTornado WarningDTX33 min
Sep 3, 4:02 PM EDTMesoscale DiscussionSPC118 min
Sep 4, 4:40 AM EDTMesoscale DiscussionSPC2 hr
Sep 4, 6:32 AM EDTSpecial Weather StatementDTX88 min
Sep 4, 10:04 AM EDTSpecial Weather StatementDTX41 min
Sep 4, 10:01 PM EDTMesoscale DiscussionSPC3 hr
Sep 5, 12:47 AM EDTSpecial Weather StatementDTX28 min
Sep 5, 1:41 AM EDTMesoscale DiscussionSPC94 min
Sep 15, 10:31 PM EDTSevere Thunderstorm WarningDTX54 min

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.