Alert archive / Michigan / Mesoscale Discussions

Mesoscale Discussions in Michigan, 2026

123 mesoscale discussions in 2026. 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 2026. Tap one for its archive.

Mesoscale Discussions
123
Busiest month
July32 mesoscale discussions
Busiest day
July 27, 20268 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
Jan 14, 6:01 PM ESTMesoscale DiscussionSPCBerrien6 hr
Feb 18, 5:16 AM ESTMesoscale DiscussionSPCAlger, Baraga, Charlevoix, Cheboygan, Chippewa, Emmet and 10 more4 hr
Mar 6, 3:10 PM ESTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 1 more2 hr
Mar 6, 7:37 PM ESTMesoscale DiscussionSPCBranch, Calhoun, Cass, Clinton, Eaton, Hillsdale and 7 more113 min
Mar 10, 5:53 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Van Buren97 min
Mar 10, 8:21 PM EDTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 7 more84 min
Mar 13, 3:06 AM EDTMesoscale DiscussionSPCAlger, Antrim, Baraga, Benzie, Charlevoix, Cheboygan and 29 more4 hr
Mar 15, 6:40 AM EDTMesoscale DiscussionSPCAlger, Delta, Dickinson, Iron, Marquette, Menominee and 1 more5 hr
Mar 15, 6:16 PM EDTMesoscale DiscussionSPCCass, Saint Joseph59 min
Mar 16, 12:14 AM EDTMesoscale DiscussionSPCHillsdale, Jackson, Lenawee, Washtenaw2 hr
Mar 16, 5:25 AM EDTMesoscale DiscussionSPCAlger, Delta, Dickinson, Iron, Marquette, Menominee and 1 more5 hr
Mar 26, 3:48 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Hillsdale, Saint Joseph117 min
Mar 30, 11:49 PM EDTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Berrien, Branch and 32 more2 hr
Mar 31, 2:35 AM EDTMesoscale DiscussionSPCArenac, Bay, Clare, Gladwin, Isabella, Lake and 7 more85 min
Mar 31, 11:55 AM EDTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee, Saint Joseph2 hr
Mar 31, 12:43 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Clinton, Eaton and 19 more3 hr
Apr 2, 1:34 PM EDTMesoscale DiscussionSPCAlger, Alpena, Charlevoix, Cheboygan, Chippewa, Delta and 8 more4 hr
Apr 2, 6:11 PM EDTMesoscale DiscussionSPCBranch, Cass, Kalamazoo, Saint Joseph94 min
Apr 2, 8:03 PM EDTMesoscale DiscussionSPCCalhoun57 min
Apr 3, 11:27 PM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Menominee6 hr
Apr 4, 1:46 PM EDTMesoscale DiscussionSPCMonroe2 hr
Apr 4, 4:39 PM EDTMesoscale DiscussionSPCLenawee, Monroe, Washtenaw, Wayne2 hr
Apr 4, 6:55 PM EDTMesoscale DiscussionSPCMonroe95 min
Apr 13, 3:06 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph24 min
Apr 13, 4:38 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph97 min
Apr 13, 5:48 PM EDTMesoscale DiscussionSPCMenominee117 min
Apr 13, 6:09 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee, Monroe, Saint Joseph96 min
Apr 13, 8:25 PM EDTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 18 more2 hr
Apr 14, 12:43 AM EDTMesoscale DiscussionSPCBay, Clare, Gladwin, Isabella, Lake, Manistee and 11 more92 min
Apr 14, 2:50 AM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Clinton, Eaton and 14 more85 min
Apr 14, 8:31 PM EDTMesoscale DiscussionSPCAllegan, Barry, Bay, Branch, Calhoun, Clare and 29 more59 min
Apr 14, 10:23 PM EDTMesoscale DiscussionSPCBarry, Clinton, Eaton, Ingham, Ionia, Jackson and 2 more97 min
Apr 15, 12:03 AM EDTMesoscale DiscussionSPCCalhoun, Eaton, Genesee, Hillsdale, Ingham, Jackson and 8 more57 min
Apr 15, 2:12 AM EDTMesoscale DiscussionSPCMonroe, Wayne93 min
Apr 15, 1:44 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Jackson, Lenawee, Monroe, Washtenaw and 1 more3 hr
Apr 16, 4:33 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Cass, Hillsdale, Jackson, Kalamazoo and 2 more57 min
Apr 17, 9:09 PM EDTMesoscale DiscussionSPCBerrien2 hr
Apr 17, 11:19 PM EDTMesoscale DiscussionSPCBerrien116 min
Apr 21, 2:07 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren113 min
Apr 22, 12:37 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 2 more2 hr
Apr 24, 2:22 PM EDTMesoscale DiscussionSPCArenac, Bay, Branch, Calhoun, Clare, Clinton and 20 more2 hr
May 4, 4:42 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more2 hr
May 9, 1:29 PM EDTMesoscale DiscussionSPCHillsdale, Huron, Lapeer, Lenawee, Livingston, Macomb and 6 more2 hr
May 12, 5:36 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Delta, Grand Traverse, Kalkaska and 7 more114 min
May 15, 6:41 PM EDTMesoscale DiscussionSPCIron2 hr
May 17, 3:32 PM EDTMesoscale DiscussionSPCArenac, Bay, Clare, Clinton, Genesee, Gladwin and 26 more2 hr
May 17, 6:22 PM EDTMesoscale DiscussionSPCArenac, Bay, Clare, Gladwin, Huron, Lake and 7 more53 min
May 18, 12:38 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 25 more67 min
May 18, 2:50 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Saint Joseph85 min
May 18, 3:16 PM EDTMesoscale DiscussionSPCBay, Branch, Calhoun, Clinton, Eaton, Genesee and 20 more89 min
May 19, 1:44 PM EDTMesoscale DiscussionSPCBranch, Genesee, Hillsdale, Jackson, Lapeer, Lenawee and 8 more91 min
May 19, 6:11 PM EDTMesoscale DiscussionSPCMonroe64 min
Jun 5, 3:38 PM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Gogebic, Iron, Marquette and 1 more97 min
Jun 5, 6:24 PM EDTMesoscale DiscussionSPCDickinson, Iron2 hr
Jun 10, 4:58 PM EDTMesoscale DiscussionSPCAllegan, Barry, Benzie, Berrien, Branch, Calhoun and 31 more2 hr
Jun 10, 7:18 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Calhoun, Clare, Clinton and 35 more87 min
Jun 11, 4:23 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph97 min
Jun 11, 7:38 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more97 min
Jun 11, 8:44 PM EDTMesoscale DiscussionSPCBerrien, Cass91 min
Jun 13, 1:00 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Crawford, Iosco, Montmorency, Ogemaw and 4 more90 min
Jun 16, 1:22 PM EDTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Berrien, Branch and 31 more113 min
Jun 16, 5:53 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Cass, Kalamazoo, Saint Joseph and 1 more97 min
Jun 24, 1:44 PM EDTMesoscale DiscussionSPCBerrien3 hr
Jun 24, 6:28 PM EDTMesoscale DiscussionSPCDickinson, Menominee92 min
Jun 29, 11:43 AM EDTMesoscale DiscussionSPCAlpena, Antrim, Charlevoix, Cheboygan, Crawford, Emmet and 5 more2 hr
Jun 29, 4:24 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Keweenaw, Ontonagon2 hr
Jun 29, 8:03 PM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Iron, Marquette and 2 more87 min
Jun 30, 11:34 AM EDTMesoscale DiscussionSPCBenzie, Manistee, Mason116 min
Jun 30, 6:33 PM EDTMesoscale DiscussionSPCMenominee87 min
Jun 30, 7:35 PM EDTMesoscale DiscussionSPCAlger, Schoolcraft85 min
Jun 30, 9:00 PM EDTMesoscale DiscussionSPCBenzie, Lake, Manistee, Mason, Oceana, Wexford2 hr
Jul 1, 9:28 AM EDTMesoscale DiscussionSPCAlpena, Antrim, Benzie, Cheboygan, Crawford, Emmet and 8 more92 min
Jul 1, 12:05 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Benzie, Cheboygan and 24 more85 min
Jul 2, 1:38 AM EDTMesoscale DiscussionSPCAntrim, Arenac, Benzie, Clare, Crawford, Gladwin and 12 more2 hr
Jul 3, 12:43 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Van Buren2 hr
Jul 3, 2:20 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 13 more55 min
Jul 3, 3:13 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren92 min
Jul 3, 5:42 PM EDTMesoscale DiscussionSPCHillsdale, Ingham, Jackson, Lenawee, Livingston, Macomb and 4 more2 hr
Jul 3, 10:29 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph2 hr
Jul 12, 8:36 AM EDTMesoscale DiscussionSPCHoughton, Keweenaw114 min
Jul 12, 1:50 PM EDTMesoscale DiscussionSPCAlger, Delta, Schoolcraft115 min
Jul 15, 7:23 PM EDTMesoscale DiscussionSPCClinton, Genesee, Gratiot, Livingston, Macomb, Oakland and 1 more2 hr
Jul 17, 8:02 PM EDTMesoscale DiscussionSPCAlger, Baraga, Gogebic, Houghton, Iron, Marquette and 1 more2 hr
Jul 17, 9:51 PM EDTMesoscale DiscussionSPCAntrim, Cheboygan, Crawford, Emmet, Montmorency, Oscoda and 2 more2 hr
Jul 18, 12:37 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Genesee, Hillsdale and 14 more113 min
Jul 18, 3:28 PM EDTMesoscale DiscussionSPCMacomb, Monroe, Wayne92 min
Jul 20, 9:37 AM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Houghton, Iron, Menominee and 1 more113 min
Jul 20, 2:53 PM EDTMesoscale DiscussionSPCGogebic2 hr
Jul 20, 6:15 PM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Iron, Marquette2 hr
Jul 20, 7:17 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Crawford, Emmet and 9 more118 min
Jul 20, 9:04 PM EDTMesoscale DiscussionSPCDelta, Menominee86 min
Jul 20, 10:52 PM EDTMesoscale DiscussionSPCDelta, Menominee, Schoolcraft53 min
Jul 20, 11:17 PM EDTMesoscale DiscussionSPCAntrim, Crawford, Gladwin, Grand Traverse, Kalkaska, Missaukee and 3 more118 min
Jul 26, 9:28 PM EDTMesoscale DiscussionSPCGogebic, Iron92 min
Jul 27, 12:39 AM EDTMesoscale DiscussionSPCAntrim, Arenac, Benzie, Charlevoix, Cheboygan, Chippewa and 20 more2 hr
Jul 27, 12:54 AM EDTMesoscale DiscussionSPCGogebic, Iron, Ontonagon96 min
Jul 27, 6:26 AM EDTMesoscale DiscussionSPCGogebic, Houghton, Keweenaw, Ontonagon2 hr
Jul 27, 8:30 AM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Ontonagon2 hr
Jul 27, 8:52 AM EDTMesoscale DiscussionSPCBerrien, Cass, Saint Joseph113 min
Jul 27, 10:40 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Muskegon, Ottawa, Van Buren3 hr
Jul 27, 5:57 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Crawford, Delta and 17 more93 min
Jul 27, 9:55 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Cass and 20 more95 min
Aug 7, 4:11 PM EDTMesoscale DiscussionSPCBaraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 3 more2 hr
Aug 7, 6:53 PM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Gogebic, Houghton and 5 more2 hr
Aug 9, 12:24 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren96 min
Aug 9, 2:57 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Van Buren93 min
Aug 9, 4:39 PM EDTMesoscale DiscussionSPCLenawee, Monroe, Washtenaw2 hr
Aug 9, 4:49 PM EDTMesoscale DiscussionSPCBerrien86 min
Aug 10, 6:15 PM EDTMesoscale DiscussionSPCBerrien2 hr
Aug 11, 12:42 PM EDTMesoscale DiscussionSPCBerrien2 hr
Aug 12, 3:28 PM EDTMesoscale DiscussionSPCBay, Clare, Genesee, Gladwin, Isabella, Lapeer and 8 more2 hr
Aug 18, 5:52 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Bay, Benzie and 29 more113 min
Aug 26, 1:22 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Eaton, Hillsdale and 8 more113 min
Sep 2, 6:37 AM EDTMesoscale DiscussionSPCArenac, Bay, Benzie, Clare, Crawford, Genesee and 24 more113 min
Sep 2, 3:21 PM EDTMesoscale DiscussionSPCBay, Huron, Sanilac, Tuscola84 min
Sep 2, 4:46 PM EDTMesoscale DiscussionSPCHillsdale, Lenawee, Macomb, Monroe, Oakland, Washtenaw and 1 more89 min
Sep 2, 10:37 PM EDTMesoscale DiscussionSPCClinton, Eaton, Ingham, Jackson, Livingston, Macomb and 5 more83 min
Sep 3, 8:52 AM EDTMesoscale DiscussionSPCAllegan, Barry, Clinton, Eaton, Genesee, Gratiot and 25 more83 min
Sep 3, 1:44 PM EDTMesoscale DiscussionSPCBarry, Calhoun, Clinton, Eaton, Genesee, Gratiot and 15 more3 hr
Sep 3, 4:02 PM EDTMesoscale DiscussionSPCLenawee, Macomb, Monroe, Oakland, Washtenaw, Wayne118 min
Sep 4, 4:40 AM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Eaton and 14 more2 hr
Sep 4, 10:01 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 5 more3 hr
Sep 5, 1:41 AM EDTMesoscale DiscussionSPCBranch, Cass, Hillsdale, Lenawee, Saint Joseph94 min

By county

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

43 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 27, 20268mesoscale discussions
  2. April 15, 20265mesoscale discussions
  3. March 31, 20264mesoscale discussions
  4. April 4, 20264mesoscale discussions
  5. April 13, 20264mesoscale discussions
  6. June 30, 20264mesoscale discussions
  7. July 3, 20264mesoscale discussions
  8. July 18, 20264mesoscale discussions
  9. July 20, 20264mesoscale discussions
  10. August 9, 20264mesoscale discussions
  11. September 3, 20264mesoscale discussions
  12. April 14, 20263mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe 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.