Alert archive / Michigan / Lenawee County

Weather alerts in Lenawee County, Michigan, 2025

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

Alerts
90
Warnings
11
Watches
11
Advisories
24
Busiest month
June22 alerts
Busiest day
March 15, 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.

Lenawee County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8625%4100%21 min
Flash flood warnings00

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Detroit, MI: tornado warnings11373%743%9 min
NWS Detroit, MI: severe thunderstorm warnings845436%13289%24 min
NWS Detroit, MI: flash flood warnings10640%1275%52 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 10, 2:30 AM ESTWinter Weather AdvisoryDTX23 hr
Jan 19, 12:02 PM ESTCold Weather AdvisoryDTX72 hr
Jan 26, 1:42 PM ESTWind AdvisoryDTX33 hr
Feb 2, 9:28 PM ESTDense Fog AdvisoryDTX7 hr
Feb 5, 2:52 AM ESTWinter Weather AdvisoryDTX30 hr
Feb 10, 3:02 PM ESTWinter Storm WatchDTX36 hr
Feb 11, 2:39 PM ESTWinter Weather AdvisoryDTX37 hr
Feb 13, 2:08 PM ESTSpecial Weather StatementDTX82 min
Feb 14, 3:03 PM ESTWinter Storm WatchDTX24 hr
Feb 14, 3:03 PM ESTWinter Weather AdvisoryDTX24 hr
Feb 15, 3:10 PM ESTWinter Weather AdvisoryDTX20 hr
Feb 28, 2:55 AM ESTWind AdvisoryDTX14 hr
Mar 5, 11:08 AM ESTSpecial Weather StatementDTX52 min
Mar 5, 2:48 PM ESTWind AdvisoryDTX21 hr
Mar 15, 12:13 AM EDTWind AdvisoryDTX23 hr
Mar 15, 3:48 PM EDTMesoscale DiscussionSPC87 min
Mar 15, 4:36 PM EDTSpecial Weather StatementDTX39 min
Mar 15, 4:40 PM EDTSevere Thunderstorm WarningDTX40 min
Mar 15, 5:00 PM EDTSevere Thunderstorm WarningDTX44 min
Mar 30, 3:49 PM EDTMesoscale DiscussionSPC116 min
Mar 30, 5:23 PM EDTSevere Thunderstorm WatchSPC5 hr
Mar 30, 5:54 PM EDTSevere Thunderstorm Warning Considerable damage threatDTX66 min
Apr 1, 2:37 PM EDTFlood WatchDTX37 hr
Apr 2, 8:26 PM EDTMesoscale DiscussionSPC2 hr
Apr 2, 9:12 PM EDTSpecial Weather StatementDTX33 min
Apr 2, 9:48 PM EDTSpecial Weather StatementDTX72 min
Apr 2, 11:18 PM EDTSpecial Weather StatementDTX57 min
Apr 4, 11:05 AM EDTRiver Flood WarningDTX23 hr
Apr 26, 2:43 PM EDTFrost AdvisoryDTX17 hr
Apr 29, 3:33 AM EDTWind AdvisoryDTX14 hr
May 8, 8:58 AM EDTSpecial Weather StatementDTX62 min
May 8, 10:38 AM EDTFrost AdvisoryDTX22 hr
May 14, 5:33 PM EDTSpecial Weather StatementDTX57 min
May 14, 6:28 PM EDTSpecial Weather StatementDTX62 min
May 15, 10:47 PM EDTMesoscale DiscussionSPC118 min
May 15, 11:28 PM EDTTornado WatchSPC3 hr
May 16, 12:50 AM EDTSpecial Weather StatementDTX55 min
Jun 4, 12:57 PM EDTMesoscale DiscussionSPC2 hr
Jun 9, 2:17 PM EDTMesoscale DiscussionSPC88 min
Jun 9, 3:10 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 18, 3:38 PM EDTMesoscale DiscussionSPC2 hr
Jun 18, 4:09 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 18, 6:24 PM EDTMesoscale DiscussionSPC96 min
Jun 18, 6:25 PM EDTSevere Thunderstorm WarningDTX80 min
Jun 20, 2:51 AM EDTExtreme Heat WatchDTX36 hr
Jun 20, 3:22 PM EDTHeat AdvisoryDTX4 days
Jun 24, 1:36 PM EDTMesoscale DiscussionSPC114 min
Jun 24, 4:27 PM EDTSpecial Weather StatementDTX78 min
Jun 24, 4:46 PM EDTSevere Thunderstorm WarningDTX30 min
Jun 25, 2:18 PM EDTSpecial Weather StatementDTX42 min
Jun 26, 12:22 PM EDTSpecial Weather StatementDTX53 min
Jun 26, 12:42 PM EDTSevere Thunderstorm WarningDTX60 min
Jun 26, 1:45 PM EDTSevere Thunderstorm WarningDTX53 min
Jun 26, 2:07 PM EDTMesoscale DiscussionSPC113 min
Jun 27, 1:10 PM EDTMesoscale DiscussionSPC2 hr
Jun 27, 2:00 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 27, 4:03 PM EDTMesoscale DiscussionSPC87 min
Jun 27, 4:55 PM EDTSpecial Weather StatementDTX65 min
Jun 30, 12:46 PM EDTMesoscale DiscussionSPC119 min
Jul 3, 5:43 PM EDTSpecial Weather StatementDTX62 min
Jul 6, 2:27 PM EDTMesoscale DiscussionSPC93 min
Jul 6, 6:45 PM EDTSpecial Weather StatementDTX45 min
Jul 9, 1:57 PM EDTSpecial Weather StatementDTX33 min
Jul 9, 2:03 PM EDTMesoscale DiscussionSPC117 min
Jul 12, 10:06 AM EDTMesoscale DiscussionSPC2 hr
Jul 12, 11:49 AM EDTSpecial Weather StatementDTX56 min
Jul 12, 12:06 PM EDTSevere Thunderstorm WarningDTX54 min
Jul 16, 3:07 PM EDTSpecial Weather StatementDTX53 min
Jul 16, 7:43 PM EDTMesoscale DiscussionSPC92 min
Jul 23, 2:46 AM EDTHeat AdvisoryDTX41 hr
Jul 24, 5:39 PM EDTMesoscale DiscussionSPC96 min
Jul 24, 7:06 PM EDTSevere Thunderstorm WatchSPC3 hr
Jul 26, 1:50 PM EDTSpecial Weather StatementDTX40 min
Jul 28, 3:02 AM EDTHeat AdvisoryDTX18 hr
Jul 28, 3:47 PM EDTSpecial Weather StatementDTX43 min
Aug 11, 5:57 PM EDTSpecial Weather StatementDTX63 min
Aug 12, 5:59 PM EDTMesoscale DiscussionSPC2 hr
Aug 16, 6:00 PM EDTSpecial Weather StatementDTX45 min
Aug 16, 6:47 PM EDTSpecial Weather StatementDTX58 min
Sep 23, 3:40 AM EDTDense Fog AdvisoryDTX5 hr
Sep 24, 3:47 AM EDTAreal Flood AdvisoryDTX4 hr
Oct 8, 11:12 AM EDTFrost AdvisoryDTX22 hr
Oct 9, 11:31 AM EDTFrost AdvisoryDTX21 hr
Nov 25, 2:17 PM ESTWind AdvisoryDTX38 hr
Nov 28, 3:12 PM ESTWinter Storm WarningDTX43 hr
Dec 18, 7:29 PM ESTSpecial Weather StatementDTX61 min
Dec 25, 10:54 AM ESTWinter Weather AdvisoryDTX29 hr
Dec 27, 3:01 PM ESTHigh Wind WatchDTX23 hr
Dec 28, 2:00 PM ESTHigh Wind WarningDTX22 hr
Dec 29, 11:57 AM ESTWind AdvisoryDTX9 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 archive20242026

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.