Alert archive / Michigan / Mesoscale Discussions

Mesoscale Discussions in Michigan, 2021

81 mesoscale discussions in 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 2021. Tap one for its archive.

Mesoscale Discussions
81
Busiest month
August22 mesoscale discussions
Busiest day
August 11, 20218 mesoscale discussions

Over time

By month

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
Feb 15, 3:52 PM ESTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more6 hr
Apr 27, 12:05 PM EDTMesoscale DiscussionSPCMenominee2 hr
May 25, 3:15 PM EDTMesoscale DiscussionSPCGogebic2 hr
May 25, 6:17 PM EDTMesoscale DiscussionSPCGogebic, Iron, Ontonagon118 min
May 25, 8:56 PM EDTMesoscale DiscussionSPCDelta, Menominee94 min
May 31, 12:53 PM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Iron, Marquette2 hr
Jun 8, 6:41 PM EDTMesoscale DiscussionSPCDickinson2 hr
Jun 10, 3:17 PM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Menominee118 min
Jun 11, 4:26 PM EDTMesoscale DiscussionSPCBay, Clare, Clinton, Gladwin, Gratiot, Ionia and 7 more94 min
Jun 12, 6:19 PM EDTMesoscale DiscussionSPCBarry, Bay, Branch, Calhoun, Clare, Clinton and 23 more116 min
Jun 19, 8:14 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 1 more91 min
Jun 20, 8:14 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Clinton, Eaton and 16 more61 min
Jun 20, 11:51 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Eaton and 11 more54 min
Jun 21, 2:14 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more2 hr
Jun 25, 5:48 PM EDTMesoscale DiscussionSPCHillsdale, Jackson, Lenawee, Livingston, Macomb, Monroe and 3 more87 min
Jun 26, 1:48 PM EDTMesoscale DiscussionSPCAllegan, Barry, Bay, Berrien, Calhoun, Cass and 15 more57 min
Jun 26, 3:47 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Cass, Eaton, Genesee, Hillsdale and 6 more118 min
Jun 26, 7:08 PM EDTMesoscale DiscussionSPCAlcona, Allegan, Arenac, Barry, Bay, Berrien and 37 more67 min
Jun 26, 9:23 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Cass and 25 more67 min
Jun 28, 1:08 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Ingham and 5 more2 hr
Jun 29, 12:54 PM EDTMesoscale DiscussionSPCBarry, Berrien, Branch, Calhoun, Cass, Eaton and 16 more2 hr
Jun 30, 2:13 PM EDTMesoscale DiscussionSPCDelta, Dickinson, Menominee2 hr
Jul 5, 3:47 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Charlevoix, Cheboygan and 20 more118 min
Jul 7, 12:07 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Ingham, Jackson, Lenawee and 5 more83 min
Jul 7, 3:02 PM EDTMesoscale DiscussionSPCBerrien88 min
Jul 7, 3:59 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Eaton, Hillsdale and 11 more91 min
Jul 24, 11:44 AM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Bay, Clare, Crawford and 16 more3 hr
Jul 24, 2:21 PM EDTMesoscale DiscussionSPCBarry, Bay, Branch, Calhoun, Cass, Clare and 29 more114 min
Jul 24, 6:21 PM EDTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Berrien, Branch and 32 more114 min
Jul 24, 8:31 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee, Monroe, Washtenaw, Wayne119 min
Jul 26, 9:41 PM EDTMesoscale DiscussionSPCGogebic94 min
Jul 27, 12:50 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Delta, Emmet, Grand Traverse and 5 more55 min
Jul 29, 1:32 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren88 min
Jul 29, 4:18 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren87 min
Jul 29, 5:55 AM EDTMesoscale DiscussionSPCHillsdale, Lenawee, Monroe95 min
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
Sep 7, 3:40 AM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Iron, Ontonagon3 hr
Sep 7, 8:05 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Cheboygan, Emmet, Grand Traverse, Kalkaska and 1 more115 min
Sep 7, 10:15 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Crawford, Grand Traverse, Kalkaska, Lake and 10 more90 min
Sep 7, 11:47 AM EDTMesoscale DiscussionSPCClare, Gladwin, Isabella, Lake, Manistee, Mason and 10 more58 min
Sep 7, 1:49 PM EDTMesoscale DiscussionSPCGratiot, Isabella, Mecosta, Montcalm, Muskegon, Newaygo and 2 more86 min
Sep 7, 2:48 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Eaton, Genesee and 14 more117 min
Sep 7, 5:37 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 23 more83 min
Sep 7, 8:16 PM EDTMesoscale DiscussionSPCHillsdale, Jackson, Lenawee, Monroe, Washtenaw, Wayne89 min
Sep 12, 2:43 PM EDTMesoscale DiscussionSPCArenac, Bay, Clare, Genesee, Gladwin, Gratiot and 20 more92 min
Sep 12, 4:44 PM EDTMesoscale DiscussionSPCKent, Muskegon, Ottawa91 min
Sep 12, 6:52 PM EDTMesoscale DiscussionSPCClinton, Genesee, Gratiot, Ionia, Kent, Lapeer and 7 more113 min
Sep 13, 10:52 AM EDTMesoscale DiscussionSPCBarry, Clinton, Gratiot, Ionia, Kent, Montcalm and 2 more83 min
Sep 14, 2:12 PM EDTMesoscale DiscussionSPCBarry, Bay, Branch, Calhoun, Cass, Clinton and 18 more2 hr
Sep 14, 6:04 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Eaton, Genesee, Hillsdale, Ingham and 14 more86 min
Sep 14, 7:46 PM EDTMesoscale DiscussionSPCLenawee, Macomb, Monroe, Washtenaw, Wayne89 min
Oct 11, 1:37 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Crawford, Grand Traverse, Kalkaska, Lake and 9 more113 min
Oct 11, 5:57 PM EDTMesoscale DiscussionSPCAllegan, Cass, Kalamazoo, Kent, Lake, Mason and 7 more93 min
Oct 11, 9:20 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Crawford, Emmet and 14 more115 min
Nov 21, 2:36 PM ESTMesoscale DiscussionSPCDickinson, Menominee3 hr
Nov 28, 3:15 PM ESTMesoscale DiscussionSPCClinton, Hillsdale, Ingham, Jackson, Lenawee, Livingston and 5 more2 hr
Nov 29, 4:46 PM ESTMesoscale DiscussionSPCAllegan, Barry, Ionia, Kalamazoo, Kent, Lake and 9 more5 hr
Dec 5, 5:22 AM ESTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Menominee, Ontonagon6 hr
Dec 5, 1:40 PM ESTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Benzie, Clare and 20 more4 hr
Dec 11, 12:46 AM ESTMesoscale DiscussionSPCAlger, Baraga, Dickinson, Iron, Marquette3 hr

By county

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

40 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. August 11, 20218mesoscale discussions
  2. September 7, 20217mesoscale discussions
  3. August 12, 20214mesoscale discussions
  4. June 21, 20213mesoscale discussions
  5. June 26, 20213mesoscale discussions
  6. July 7, 20213mesoscale discussions
  7. July 24, 20213mesoscale discussions
  8. July 29, 20213mesoscale discussions
  9. August 29, 20213mesoscale discussions
  10. September 12, 20213mesoscale discussions
  11. September 14, 20213mesoscale discussions
  12. May 25, 20212mesoscale discussions

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.