Alert archive / Michigan / Mesoscale Discussions / 2021

Mesoscale Discussions in Michigan, August 2021

22 mesoscale discussions in August 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count in August 2021. Tap one for its archive.

Mesoscale Discussions
22
Busiest day
August 11, 20218 mesoscale discussions

Over time

By day

Days in UTC, the clock the archive keeps.

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.

IssuedProductOfficeCountiesLasted
Aug 6, 4:23 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Cass, Kalamazoo, Kent and 5 more97 min
Aug 10, 1:02 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Keweenaw, Ontonagon88 min
Aug 10, 3:43 PM EDTMesoscale DiscussionSPCAlger, Dickinson, Marquette62 min
Aug 10, 8:12 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 25 more63 min
Aug 10, 10:57 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Barry, Bay and 44 more93 min
Aug 11, 10:52 AM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Jackson and 3 more83 min
Aug 11, 12:48 PM EDTMesoscale DiscussionSPCMenominee117 min
Aug 11, 1:26 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Kalamazoo, Saint Joseph94 min
Aug 11, 2:12 PM EDTMesoscale DiscussionSPCGenesee, Huron, Lapeer, Lenawee, Livingston, Macomb and 9 more93 min
Aug 11, 4:20 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Cheboygan, Crawford and 13 more115 min
Aug 11, 7:45 PM EDTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Cass, Clinton, Eaton and 15 more90 min
Aug 11, 8:35 PM EDTMesoscale DiscussionSPCBerrien, Cass, Van Buren85 min
Aug 11, 10:17 PM EDTMesoscale DiscussionSPCGenesee, Lapeer, Livingston, Macomb, Oakland, Saint Clair and 3 more88 min
Aug 12, 12:06 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more84 min
Aug 12, 6:38 AM EDTMesoscale DiscussionSPCHillsdale, Jackson, Lenawee, Monroe, Oakland, Washtenaw and 1 more97 min
Aug 24, 2:02 PM EDTMesoscale DiscussionSPCBenzie, Kent, Lake, Manistee, Mason, Mecosta and 7 more88 min
Aug 24, 6:19 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Cass and 19 more116 min
Aug 24, 9:14 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Cass, Kalamazoo, Saint Joseph2 hr
Aug 28, 6:42 PM EDTMesoscale DiscussionSPCBay, Genesee, Huron, Lapeer, Saginaw, Saint Clair and 3 more93 min
Aug 29, 1:05 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Bay, Cheboygan and 20 more115 min
Aug 29, 4:08 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 10 more97 min
Aug 29, 4:27 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Barry, Bay, Clinton and 16 more93 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

35 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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. Rebuilt daily.