Alert archive / Michigan / Cass County

Weather alerts in Cass County, Michigan, 2026

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

Cass County and its neighbors

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

Alerts
163
Warnings
43
Watches
27
Advisories
38
Busiest month
April36 alerts
Busiest day
March 6, 20267 alerts

Over time

By month

Warning verification

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

3 of 8 tornado warnings covering Cass County in 2026 had a tornado report inside them; 2 of 4 tornado reports fell inside a warning, on average 5 minutes after it went out.

Cass County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings8363%450%5 min
Severe thunderstorm warnings251156%2162%23 min
Flash flood warnings00

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings481471%5357%11 min
NWS Northern Indiana: severe thunderstorm warnings30915350%67474%19 min
NWS Northern Indiana: flash flood warnings14750%4356%115 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 9, 1:34 AM ESTWind AdvisoryIWX14 hr
Jan 13, 1:47 PM ESTWinter Storm WarningIWX47 hr
Jan 13, 1:47 PM ESTWinter Weather AdvisoryIWX47 hr
Jan 18, 3:20 AM ESTWinter Weather AdvisoryIWX52 hr
Jan 19, 7:54 AM ESTSnow Squall WarningIWX53 min
Jan 20, 2:08 PM ESTWinter Weather AdvisoryIWX20 hr
Jan 22, 2:54 AM ESTCold Weather AdvisoryIWX55 hr
Jan 23, 1:57 PM ESTWinter Storm WarningIWX71 hr
Jan 24, 5:07 AM ESTWinter Weather AdvisoryIWX56 hr
Jan 25, 1:15 PM ESTCold Weather AdvisoryIWX45 hr
Jan 26, 12:53 PM ESTWinter Weather AdvisoryIWX34 hr
Feb 2, 9:52 AM ESTWinter Weather AdvisoryIWX5 hr
Feb 16, 2:51 AM ESTDense Fog AdvisoryIWX9 hr
Feb 19, 1:39 PM ESTWind AdvisoryIWX29 hr
Feb 21, 1:36 PM ESTWinter Weather AdvisoryIWX50 hr
Mar 4, 11:18 PM ESTDense Fog AdvisoryIWX11 hr
Mar 5, 9:06 PM ESTDense Fog AdvisoryIWX14 hr
Mar 6, 3:10 PM ESTMesoscale DiscussionSPC2 hr
Mar 6, 3:14 PM ESTTornado WarningIWX31 min
Mar 6, 3:38 PM ESTTornado WarningIWX37 min
Mar 6, 6:02 PM ESTSevere Thunderstorm WatchSPC4 hr
Mar 6, 6:23 PM ESTSevere Thunderstorm WarningIWX37 min
Mar 6, 6:50 PM ESTSevere Thunderstorm WarningIWX25 min
Mar 6, 7:37 PM ESTMesoscale DiscussionSPC113 min
Mar 10, 1:45 PM EDTFlood WatchIWX16 hr
Mar 10, 5:53 PM EDTMesoscale DiscussionSPC97 min
Mar 10, 7:45 PM EDTTornado WatchSPC6 hr
Mar 10, 10:53 PM EDTSevere Thunderstorm WarningIWX14 min
Mar 10, 11:48 PM EDTSevere Thunderstorm Warning Considerable damage threatIWX42 min
Mar 12, 1:30 AM EDTHigh Wind WatchIWX11 hr
Mar 12, 12:43 PM EDTHigh Wind WarningIWX31 hr
Mar 14, 12:58 PM EDTWind AdvisoryIWX35 hr
Mar 15, 1:55 AM EDTWinter Weather AdvisoryIWX57 hr
Mar 15, 6:16 PM EDTMesoscale DiscussionSPC59 min
Mar 15, 6:42 PM EDTSevere Thunderstorm WatchSPC6 hr
Mar 26, 3:48 PM EDTMesoscale DiscussionSPC117 min
Mar 30, 11:49 PM EDTMesoscale DiscussionSPC2 hr
Mar 31, 10:25 AM EDTSevere Thunderstorm WatchSPC6 hr
Mar 31, 12:43 PM EDTMesoscale DiscussionSPC3 hr
Apr 2, 1:55 AM EDTWind AdvisoryIWX18 hr
Apr 2, 6:11 PM EDTMesoscale DiscussionSPC94 min
Apr 2, 6:28 PM EDTTornado WatchSPC3 hr
Apr 2, 6:32 PM EDTSevere Thunderstorm WarningIWX43 min
Apr 2, 6:40 PM EDTTornado WarningIWX35 min
Apr 3, 2:17 PM EDTFlood WatchIWX27 hr
Apr 4, 6:08 AM EDTAreal Flood AdvisoryIWX4 hr
Apr 5, 10:29 AM EDTRiver Flood WarningIWX4 days
Apr 13, 3:06 PM EDTMesoscale DiscussionSPC24 min
Apr 13, 3:09 PM EDTSevere Thunderstorm WatchSPC5 hr
Apr 13, 4:38 PM EDTMesoscale DiscussionSPC97 min
Apr 13, 5:07 PM EDTSpecial Weather StatementIWX23 min
Apr 13, 5:26 PM EDTSpecial Weather StatementIWX49 min
Apr 13, 5:44 PM EDTSevere Thunderstorm WarningIWX38 min
Apr 14, 4:41 AM EDTSpecial Weather StatementIWX64 min
Apr 14, 5:21 AM EDTSpecial Weather StatementIWX54 min
Apr 14, 1:19 PM EDTFlood WatchIWX43 hr
Apr 14, 8:54 PM EDTTornado WatchSPC6 hr
Apr 15, 12:25 AM EDTSevere Thunderstorm WarningIWX50 min
Apr 15, 1:26 AM EDTAreal Flood AdvisoryIWX4 hr
Apr 15, 2:58 AM EDTSpecial Weather StatementIWX32 min
Apr 15, 10:35 PM EDTRiver Flood WarningIWX21 days
Apr 15, 10:35 PM EDTRiver Flood WarningIWX21 days
Apr 16, 2:52 PM EDTSpecial Weather StatementIWX23 min
Apr 16, 4:33 PM EDTMesoscale DiscussionSPC57 min
Apr 16, 10:31 PM EDTDense Fog AdvisoryIWX9 hr
Apr 17, 10:44 PM EDTTornado WatchSPC3 hr
Apr 18, 12:26 AM EDTSevere Thunderstorm WarningIWX47 min
Apr 18, 12:42 AM EDTTornado WarningIWX33 min
Apr 18, 12:59 AM EDTSevere Thunderstorm WarningIWX46 min
Apr 18, 1:56 PM EDTFrost AdvisoryIWX19 hr
Apr 18, 1:56 PM EDTFreeze WatchIWX12 hr
Apr 19, 1:34 AM EDTFreeze WarningIWX31 hr
Apr 21, 2:07 PM EDTMesoscale DiscussionSPC113 min
Apr 22, 12:37 PM EDTMesoscale DiscussionSPC2 hr
Apr 27, 1:34 PM EDTWind AdvisoryIWX12 hr
May 1, 3:03 AM EDTFreeze WatchIWX9 hr
May 1, 11:53 AM EDTFreeze WarningIWX21 hr
May 4, 4:42 PM EDTMesoscale DiscussionSPC2 hr
May 4, 5:30 PM EDTSpecial Weather StatementIWX30 min
May 4, 6:19 PM EDTSpecial Weather StatementIWX41 min
May 4, 7:14 PM EDTSpecial Weather StatementIWX46 min
May 4, 7:25 PM EDTSevere Thunderstorm WarningIWX10 min
May 4, 9:21 PM EDTSpecial Weather StatementIWX24 min
May 6, 2:51 PM EDTFrost AdvisoryIWX17 hr
May 11, 1:36 PM EDTFrost AdvisoryIWX18 hr
May 18, 11:02 AM EDTSevere Thunderstorm WatchSPC7 hr
May 18, 12:38 PM EDTMesoscale DiscussionSPC67 min
May 18, 1:15 PM EDTSevere Thunderstorm WarningIWX45 min
May 18, 1:44 PM EDTSevere Thunderstorm WarningIWX46 min
May 24, 11:34 PM EDTDense Fog AdvisoryIWX9 hr
Jun 9, 2:08 PM EDTHeat AdvisoryIWX30 hr
Jun 10, 4:58 PM EDTMesoscale DiscussionSPC2 hr
Jun 10, 5:41 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 10, 5:43 PM EDTSevere Thunderstorm WarningIWX62 min
Jun 10, 6:08 PM EDTSevere Thunderstorm WarningIWX37 min
Jun 10, 6:44 PM EDTSpecial Weather StatementIWX31 min
Jun 11, 1:49 AM EDTHeat AdvisoryIWX16 hr
Jun 11, 4:23 PM EDTMesoscale DiscussionSPC97 min
Jun 11, 7:38 PM EDTMesoscale DiscussionSPC97 min
Jun 11, 8:08 PM EDTTornado WatchSPC6 hr
Jun 11, 8:44 PM EDTMesoscale DiscussionSPC91 min
Jun 11, 10:00 PM EDTSevere Thunderstorm Warning Considerable damage threatIWX45 min
Jun 11, 10:13 PM EDTTornado WarningIWX47 min
Jun 11, 10:42 PM EDTTornado WarningIWX48 min
Jun 16, 1:22 PM EDTMesoscale DiscussionSPC113 min
Jun 16, 4:07 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 16, 5:53 PM EDTMesoscale DiscussionSPC97 min
Jun 16, 6:29 PM EDTTornado WarningIWX46 min
Jun 16, 7:06 PM EDTSevere Thunderstorm WarningIWX39 min
Jun 17, 2:37 AM EDTFlood WatchIWX19 hr
Jun 17, 2:16 PM EDTWind AdvisoryIWX5 hr
Jun 17, 7:22 PM EDTAreal Flood AdvisoryIWX113 min
Jun 22, 12:48 AM EDTAreal Flood AdvisoryIWX5 hr
Jun 28, 2:16 AM EDTExtreme Heat WatchIWX11 hr
Jun 28, 1:29 PM EDTExtreme Heat WarningIWX5 days
Jul 2, 11:33 AM EDTHeat AdvisoryIWX55 hr
Jul 3, 12:43 AM EDTMesoscale DiscussionSPC2 hr
Jul 3, 4:02 AM EDTSpecial Weather StatementIWX58 min
Jul 3, 2:20 PM EDTMesoscale DiscussionSPC55 min
Jul 3, 2:35 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 3, 3:13 PM EDTMesoscale DiscussionSPC92 min
Jul 3, 3:47 PM EDTSevere Thunderstorm Warning Considerable damage threatIWX73 min
Jul 3, 10:29 PM EDTMesoscale DiscussionSPC2 hr
Jul 3, 10:36 PM EDTSpecial Weather StatementIWX54 min
Jul 3, 11:26 PM EDTAreal Flood AdvisoryIWX3 hr
Jul 13, 12:57 PM EDTHeat AdvisoryIWX31 hr
Jul 14, 12:45 PM EDTHeat AdvisoryIWX31 hr
Jul 18, 12:32 PM EDTSpecial Weather StatementIWX28 min
Jul 18, 12:37 PM EDTMesoscale DiscussionSPC113 min
Jul 27, 8:08 AM EDTSpecial Weather StatementIWX52 min
Jul 27, 8:47 AM EDTSevere Thunderstorm WarningIWX32 min
Jul 27, 8:52 AM EDTMesoscale DiscussionSPC113 min
Jul 27, 10:40 AM EDTMesoscale DiscussionSPC3 hr
Jul 27, 12:42 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 27, 2:56 PM EDTSevere Thunderstorm WarningIWX49 min
Jul 27, 9:55 PM EDTMesoscale DiscussionSPC95 min
Aug 7, 5:06 AM EDTDense Fog AdvisoryIWX4 hr
Aug 9, 12:24 PM EDTMesoscale DiscussionSPC96 min
Aug 9, 1:03 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 9, 2:57 PM EDTMesoscale DiscussionSPC93 min
Aug 9, 3:24 PM EDTSevere Thunderstorm WarningIWX66 min
Aug 9, 4:40 PM EDTSevere Thunderstorm WarningIWX65 min
Aug 9, 5:17 PM EDTAreal Flood AdvisoryIWX118 min
Aug 9, 5:34 PM EDTSevere Thunderstorm WarningIWX41 min
Aug 9, 8:27 PM EDTFlood WatchIWX11 hr
Aug 10, 1:45 AM EDTSpecial Weather StatementIWX45 min
Aug 10, 2:09 AM EDTSpecial Weather StatementIWX36 min
Aug 10, 2:16 AM EDTSevere Thunderstorm WarningIWX29 min
Aug 10, 7:21 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 11, 2:46 AM EDTSevere Thunderstorm WarningIWX29 min
Aug 11, 3:50 AM EDTSpecial Weather StatementIWX25 min
Aug 11, 4:07 AM EDTSpecial Weather StatementIWX23 min
Aug 11, 6:40 AM EDTSevere Thunderstorm Warning Considerable damage threatIWX35 min
Aug 11, 11:01 AM EDTSevere Thunderstorm WatchSPC10 hr
Aug 11, 12:34 PM EDTTornado WarningIWX56 min
Aug 18, 11:20 PM EDTSpecial Weather StatementIWX40 min
Aug 26, 1:22 PM EDTMesoscale DiscussionSPC113 min
Aug 31, 1:00 PM EDTHeat AdvisoryIWX4 days
Sep 3, 1:41 AM EDTHeat AdvisoryIWX18 hr
Sep 4, 4:40 AM EDTMesoscale DiscussionSPC2 hr
Sep 4, 10:01 PM EDTMesoscale DiscussionSPC3 hr
Sep 5, 1:41 AM EDTMesoscale DiscussionSPC94 min
Sep 18, 3:20 PM EDTFlood WatchIWX47 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.