Alert archive / Michigan / Monroe County

Weather alerts in Monroe County, Michigan, 2019

129 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts
129
Warnings
28
Watches
12
Advisories
28
Busiest month
May19 alerts
Busiest day
June 1, 20196 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, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8713%1155%25 min
Flash flood warnings00

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Detroit, MI: tornado warnings11282%888%14 min
NWS Detroit, MI: severe thunderstorm warnings845930%16273%19 min
NWS Detroit, MI: flash flood warnings50100%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 15, 2:58 PM ESTWinter Weather AdvisoryDTX19 hr
Jan 18, 10:52 AM ESTWinter Weather AdvisoryDTX33 hr
Jan 19, 11:09 AM ESTMesoscale DiscussionSPC3 hr
Jan 19, 2:34 PM ESTMesoscale DiscussionSPC4 hr
Jan 20, 2:44 AM ESTWind Chill AdvisoryDTX33 hr
Jan 22, 3:05 AM ESTWinter Weather AdvisoryDTX33 hr
Jan 22, 7:00 PM ESTMesoscale DiscussionSPC6 hr
Jan 27, 3:43 AM ESTWinter Weather AdvisoryDTX40 hr
Jan 28, 4:34 PM ESTWind Chill WatchDTX8 hr
Jan 29, 12:23 AM ESTWind Chill WarningDTX62 hr
Jan 31, 1:51 PM ESTWind Chill AdvisoryDTX19 hr
Feb 5, 3:35 AM ESTWinter Weather AdvisoryDTX33 hr
Feb 5, 9:54 PM ESTMesoscale DiscussionSPC6 hr
Feb 7, 3:02 AM ESTWind AdvisoryDTX31 hr
Feb 7, 7:34 PM ESTSpecial Weather StatementDTX116 min
Feb 8, 11:01 AM ESTRiver Flood WarningDTX3 days
Feb 10, 3:36 PM ESTWinter Storm WatchDTX24 hr
Feb 11, 4:03 PM ESTIce Storm WarningDTX20 hr
Feb 12, 2:40 AM ESTMesoscale DiscussionSPC6 hr
Feb 12, 11:42 AM ESTWind AdvisoryDTX24 hr
Feb 19, 12:23 PM ESTWinter Weather AdvisoryDTX34 hr
Feb 22, 11:00 AM ESTHigh Wind WatchDTX29 hr
Feb 23, 3:43 PM ESTHigh Wind WarningDTX36 hr
Feb 24, 4:51 AM ESTSpecial Weather StatementDTX54 min
Feb 24, 4:52 AM ESTSpecial Weather StatementDTX53 min
Mar 9, 8:10 PM ESTMesoscale DiscussionSPC4 hr
Mar 10, 3:03 AM EDTWind AdvisoryDTX13 hr
Mar 14, 5:51 PM EDTSpecial Weather StatementDTX114 min
Mar 14, 5:54 PM EDTMesoscale DiscussionSPC66 min
Mar 14, 6:08 PM EDTSevere Thunderstorm WatchSPC4 hr
Mar 14, 8:48 PM EDTMesoscale DiscussionSPC57 min
Apr 10, 4:13 AM EDTLakeshore Flood AdvisoryDTX33 hr
Apr 11, 7:15 AM EDTLakeshore Flood WarningDTX20 hr
Apr 13, 1:12 PM EDTCoastal Flood WatchDTX14 hr
Apr 14, 3:09 AM EDTLakeshore Flood WarningDTX25 hr
Apr 14, 3:09 AM EDTLakeshore Flood AdvisoryDTX30 hr
Apr 17, 8:27 PM EDTSpecial Weather StatementDTX63 min
Apr 18, 2:42 PM EDTLakeshore Flood AdvisoryDTX55 hr
Apr 27, 2:23 PM EDTLakeshore Flood AdvisoryDTX19 hr
Apr 29, 4:06 AM EDTLakeshore Flood AdvisoryDTX18 hr
Apr 30, 3:30 PM EDTLakeshore Flood AdvisoryDTX24 hr
Apr 30, 10:23 PM EDTLakeshore Flood WarningDTX12 hr
Apr 30, 11:51 PM EDTAreal Flood AdvisoryDTX3 hr
May 1, 3:59 PM EDTFlood WatchDTX35 hr
May 2, 3:58 PM EDTRiver Flood WarningDTX4 days
May 2, 3:58 PM EDTRiver Flood WarningDTX3 days
May 2, 3:58 PM EDTRiver Flood WarningDTX4 days
May 7, 11:06 AM EDTLakeshore Flood WarningDTX51 hr
May 9, 12:24 PM EDTSpecial Weather StatementDTX51 min
May 9, 7:01 PM EDTSpecial Weather StatementDTX59 min
May 11, 3:58 AM EDTLakeshore Flood WatchDTX10 hr
May 11, 1:41 PM EDTLakeshore Flood WarningDTX32 hr
May 18, 3:38 AM EDTLakeshore Flood AdvisoryDTX11 hr
May 21, 2:57 PM EDTLakeshore Flood AdvisoryDTX26 hr
May 23, 6:16 AM EDTSpecial Weather StatementDTX44 min
May 25, 3:32 PM EDTSpecial Weather StatementDTX58 min
May 25, 3:41 PM EDTSevere Thunderstorm WarningDTX37 min
May 27, 2:53 AM EDTDense Fog AdvisoryDTX5 hr
May 30, 1:15 PM EDTSpecial Weather StatementDTX60 min
May 30, 2:32 PM EDTSpecial Weather StatementDTX58 min
Jun 1, 11:49 AM EDTMesoscale DiscussionSPC116 min
Jun 1, 12:55 PM EDTSevere Thunderstorm WatchSPC3 hr
Jun 1, 1:50 PM EDTSevere Thunderstorm WarningDTX55 min
Jun 1, 2:35 PM EDTSevere Thunderstorm WarningDTX40 min
Jun 1, 2:43 PM EDTSevere Thunderstorm WarningDTX45 min
Jun 1, 3:34 PM EDTMesoscale DiscussionSPC116 min
Jun 1, 8:01 PM EDTSpecial Weather StatementDTX3 hr
Jun 5, 1:00 PM EDTMesoscale DiscussionSPC2 hr
Jun 7, 3:31 AM EDTLakeshore Flood WatchDTX7 hr
Jun 7, 10:55 AM EDTLakeshore Flood WarningDTX59 hr
Jun 12, 7:45 PM EDTLakeshore Flood StatementDTX8 hr
Jun 23, 12:52 AM EDTLakeshore Flood WarningDTX27 hr
Jun 27, 4:05 AM EDTSpecial Weather StatementDTX85 min
Jul 2, 3:10 PM EDTMesoscale DiscussionSPC95 min
Jul 2, 4:36 PM EDTSevere Thunderstorm WarningDTX24 min
Jul 2, 5:07 PM EDTSpecial Weather StatementDTX53 min
Jul 4, 3:24 PM EDTSpecial Weather StatementDTX66 min
Jul 6, 1:31 PM EDTSpecial Weather StatementDTX74 min
Jul 6, 6:22 PM EDTSpecial Weather StatementDTX23 min
Jul 6, 9:44 PM EDTLakeshore Flood WarningDTX45 hr
Jul 15, 3:05 PM EDTSpecial Weather StatementDTX55 min
Jul 17, 5:20 AM EDTSpecial Weather StatementDTX85 min
Jul 18, 4:12 AM EDTExcessive Heat WarningDTX63 hr
Jul 18, 2:55 PM EDTSpecial Weather StatementDTX65 min
Jul 19, 1:57 PM EDTMesoscale DiscussionSPC2 hr
Jul 20, 2:15 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 6:49 PM EDTSpecial Weather StatementDTX41 min
Jul 29, 2:11 PM EDTMesoscale DiscussionSPC2 hr
Jul 31, 10:50 AM EDTLakeshore Flood StatementDTX5 hr
Aug 15, 3:49 PM EDTSpecial Weather StatementDTX56 min
Aug 15, 5:14 PM EDTSpecial Weather StatementDTX31 min
Aug 18, 12:47 PM EDTMesoscale DiscussionSPC88 min
Aug 18, 12:55 PM EDTSevere Thunderstorm WarningDTX54 min
Aug 18, 3:02 PM EDTMesoscale DiscussionSPC118 min
Aug 18, 8:20 PM EDTSevere Thunderstorm WarningDTX39 min
Aug 18, 9:08 PM EDTSpecial Weather StatementDTX37 min
Aug 20, 5:50 PM EDTMesoscale DiscussionSPC2 hr
Aug 25, 10:19 PM EDTBeach Hazards StatementDTX22 hr
Aug 26, 4:30 AM EDTLakeshore Flood WarningDTX18 hr
Sep 3, 10:03 PM EDTMesoscale DiscussionSPC2 hr
Sep 4, 12:49 AM EDTSpecial Weather StatementDTX56 min
Sep 11, 1:48 PM EDTMesoscale DiscussionSPC117 min
Sep 11, 2:31 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 11, 2:37 PM EDTSpecial Weather StatementDTX38 min
Sep 11, 4:33 PM EDTMesoscale DiscussionSPC117 min
Sep 11, 10:14 PM EDTSpecial Weather StatementDTX61 min
Sep 13, 2:21 PM EDTMesoscale DiscussionSPC84 min
Sep 13, 2:45 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 13, 3:20 PM EDTSpecial Weather StatementDTX55 min
Sep 13, 3:51 PM EDTSevere Thunderstorm WarningDTX39 min
Sep 13, 7:16 PM EDTMesoscale DiscussionSPC89 min
Sep 27, 11:53 PM EDTSpecial Weather StatementDTX67 min
Sep 28, 12:48 AM EDTSpecial Weather StatementDTX57 min
Oct 3, 3:33 AM EDTLakeshore Flood WarningDTX4 hr
Oct 3, 4:03 AM EDTSpecial Weather StatementDTX57 min
Oct 14, 3:04 AM EDTFrost AdvisoryDTX29 hr
Oct 17, 3:28 PM EDTFreeze WarningDTX17 hr
Oct 22, 1:45 AM EDTSpecial Weather StatementDTX60 min
Oct 26, 2:49 AM EDTLakeshore Flood WarningDTX27 hr
Oct 27, 3:20 AM EDTSpecial Weather StatementDTX70 min
Oct 27, 9:47 PM EDTLakeshore Flood StatementDTX3 hr
Oct 31, 3:10 AM EDTWind AdvisoryDTX25 hr
Nov 10, 3:11 PM ESTWinter Weather AdvisoryDTX36 hr
Nov 26, 2:32 PM ESTWind AdvisoryDTX30 hr
Nov 30, 1:52 PM ESTLakeshore Flood StatementDTX17 hr
Dec 24, 10:05 PM ESTDense Fog AdvisoryDTX12 hr
Dec 29, 2:17 PM ESTDense Fog AdvisoryDTX7 hr
Dec 29, 8:48 PM ESTWind AdvisoryDTX19 hr
Dec 30, 5:36 AM ESTSpecial Weather StatementDTX39 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 archive20182020

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.