Alert archive / Michigan / Monroe County

Weather alerts in Monroe County, Michigan, 2024

82 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Monroe County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
82
Warnings
11
Watches
9
Advisories
20
Busiest month
June24 alerts
Busiest day
April 17, 20246 alerts

Over time

By month

Warning verification

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

Monroe County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings6517%560%18 min
Flash flood warnings00

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Detroit, MI: tornado warnings4175%333%1 min
NWS Detroit, MI: severe thunderstorm warnings764541%10671%24 min
NWS Detroit, MI: flash flood warnings20100%0

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 8, 3:06 PM ESTWinter Weather AdvisoryDTX25 hr
Jan 12, 3:41 AM ESTWinter Weather AdvisoryDTX47 hr
Jan 13, 12:49 PM ESTSnow Squall WarningDTX26 min
Jan 13, 3:22 PM ESTWind Chill AdvisoryDTX30 hr
Jan 14, 9:32 PM ESTWind Chill WarningDTX14 hr
Jan 16, 3:04 AM ESTWind Chill AdvisoryDTX33 hr
Jan 18, 3:58 PM ESTWinter Weather AdvisoryDTX24 hr
Jan 22, 3:53 AM ESTWinter Weather AdvisoryDTX36 hr
Jan 23, 9:57 PM ESTDense Fog AdvisoryDTX48 hr
Jan 26, 9:37 AM ESTRiver Flood WarningDTX19 hr
Jan 28, 10:16 AM ESTRiver Flood WarningDTX25 hr
Feb 4, 10:16 PM ESTFreezing Fog AdvisoryDTX9 hr
Feb 27, 3:15 PM ESTWind AdvisoryDTX28 hr
Feb 27, 11:13 PM ESTSpecial Weather StatementDTX62 min
Mar 26, 2:08 PM EDTMesoscale DiscussionSPC3 hr
Apr 11, 3:07 PM EDTWind AdvisoryDTX33 hr
Apr 17, 11:25 AM EDTMesoscale DiscussionSPC95 min
Apr 17, 11:52 AM EDTSevere Thunderstorm WatchSPC6 hr
Apr 17, 2:37 PM EDTMesoscale DiscussionSPC83 min
Apr 17, 2:48 PM EDTSpecial Weather StatementDTX57 min
Apr 17, 3:07 PM EDTSevere Thunderstorm WarningDTX24 min
Apr 17, 3:34 PM EDTSevere Thunderstorm WarningDTX35 min
Apr 21, 2:43 PM EDTFrost AdvisoryDTX17 hr
Apr 23, 3:41 PM EDTFreeze WatchDTX12 hr
Apr 24, 3:36 AM EDTFreeze WarningDTX28 hr
Apr 25, 2:59 PM EDTFrost AdvisoryDTX17 hr
May 7, 4:55 PM EDTTornado WatchSPC6 hr
May 7, 6:46 PM EDTMesoscale DiscussionSPC89 min
May 19, 7:06 PM EDTSpecial Weather StatementDTX24 min
May 19, 7:33 PM EDTSpecial Weather StatementDTX42 min
May 19, 8:29 PM EDTSpecial Weather StatementDTX61 min
May 20, 6:59 PM EDTSpecial Weather StatementDTX61 min
May 26, 1:05 PM EDTBeach Hazards StatementDTX7 hr
May 26, 5:57 PM EDTSpecial Weather StatementDTX33 min
May 28, 2:27 PM EDTSpecial Weather StatementDTX63 min
May 28, 5:13 PM EDTSpecial Weather StatementDTX62 min
Jun 5, 11:38 AM EDTMesoscale DiscussionSPC3 hr
Jun 5, 3:09 PM EDTSpecial Weather StatementDTX66 min
Jun 5, 10:25 PM EDTSpecial Weather StatementDTX65 min
Jun 13, 7:30 PM EDTSpecial Weather StatementDTX60 min
Jun 16, 3:11 AM EDTExcessive Heat WatchDTX24 hr
Jun 17, 3:30 AM EDTHeat AdvisoryDTX4 days
Jun 17, 8:21 PM EDTSpecial Weather StatementDTX54 min
Jun 17, 8:30 PM EDTSevere Thunderstorm WarningDTX60 min
Jun 17, 9:30 PM EDTSevere Thunderstorm WarningDTX37 min
Jun 19, 1:47 PM EDTMesoscale DiscussionSPC88 min
Jun 19, 2:22 PM EDTSpecial Weather StatementDTX53 min
Jun 19, 5:57 PM EDTSpecial Weather StatementDTX33 min
Jun 19, 6:39 PM EDTSpecial Weather StatementDTX51 min
Jun 20, 12:17 PM EDTMesoscale DiscussionSPC118 min
Jun 20, 5:51 PM EDTSpecial Weather StatementDTX39 min
Jun 20, 6:11 PM EDTSevere Thunderstorm WarningDTX28 min
Jun 21, 1:36 PM EDTSpecial Weather StatementDTX54 min
Jun 21, 1:57 PM EDTMesoscale DiscussionSPC93 min
Jun 21, 2:06 PM EDTSpecial Weather StatementDTX54 min
Jun 21, 2:55 PM EDTAreal Flood AdvisoryDTX3 hr
Jun 25, 5:37 AM EDTMesoscale DiscussionSPC113 min
Jun 25, 6:00 AM EDTSevere Thunderstorm WatchSPC6 hr
Jun 25, 9:11 AM EDTSpecial Weather StatementDTX49 min
Jun 25, 11:25 AM EDTSpecial Weather StatementDTX95 min
Jul 10, 2:20 AM EDTAreal Flood AdvisoryDTX14 hr
Jul 16, 12:11 AM EDTMesoscale DiscussionSPC2 hr
Jul 16, 12:35 AM EDTSevere Thunderstorm WatchSPC4 hr
Jul 16, 1:38 AM EDTMesoscale DiscussionSPC2 hr
Aug 6, 4:33 AM EDTBeach Hazards StatementDTX17 hr
Aug 6, 7:31 AM EDTMesoscale DiscussionSPC119 min
Aug 6, 8:04 AM EDTTornado WatchSPC9 hr
Aug 6, 12:48 PM EDTSpecial Weather StatementDTX27 min
Aug 26, 12:53 PM EDTHeat AdvisoryDTX29 hr
Aug 27, 3:52 PM EDTSevere Thunderstorm WatchSPC3 hr
Aug 27, 4:56 PM EDTMesoscale DiscussionSPC2 hr
Aug 27, 5:45 PM EDTSevere Thunderstorm WarningDTX75 min
Aug 28, 2:55 AM EDTSpecial Weather StatementDTX50 min
Aug 28, 6:55 PM EDTAreal Flood AdvisoryDTX2 hr
Aug 30, 2:25 PM EDTMesoscale DiscussionSPC95 min
Aug 30, 4:44 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 30, 6:51 PM EDTMesoscale DiscussionSPC114 min
Sep 27, 2:57 PM EDTLakeshore Flood AdvisoryDTX13 hr
Oct 31, 2:31 AM EDTWind AdvisoryDTX23 hr
Dec 4, 9:19 PM ESTSpecial Weather StatementDTX56 min
Dec 12, 6:53 AM ESTSpecial Weather StatementDTX82 min
Dec 15, 8:37 PM ESTDense Fog AdvisoryDTX13 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 archive20232025

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.