Alert archive / Michigan / Mesoscale Discussions

Mesoscale Discussions in Michigan, 2020

73 mesoscale discussions in 2020. 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 2020. Tap one for its archive.

Mesoscale Discussions
73
Busiest month
August20 mesoscale discussions
Busiest day
August 10, 20207 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 11, 8:25 PM ESTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Cass, Clinton, Eaton and 18 more6 hr
Feb 5, 6:07 PM ESTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Jackson and 6 more2 hr
Feb 9, 4:34 PM ESTMesoscale DiscussionSPCBarry, Clinton, Eaton, Gratiot, Ionia, Kent and 5 more3 hr
Apr 7, 12:03 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Branch, Cass, Hillsdale, Kalamazoo and 2 more2 hr
Apr 7, 4:06 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 20 more114 min
Apr 7, 6:59 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 23 more91 min
May 10, 12:20 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee, Monroe2 hr
May 25, 11:59 AM EDTMesoscale DiscussionSPCDelta, Dickinson, Gogebic, Iron, Menominee61 min
Jun 2, 10:28 PM EDTMesoscale DiscussionSPCAllegan, Barry, Clare, Clinton, Eaton, Gratiot and 14 more2 hr
Jun 3, 1:56 AM EDTMesoscale DiscussionSPCBarry, Bay, Calhoun, Clinton, Eaton, Genesee and 18 more94 min
Jun 5, 1:26 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren94 min
Jun 9, 7:20 PM EDTMesoscale DiscussionSPCBerrien115 min
Jun 10, 9:44 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more91 min
Jun 10, 11:22 AM EDTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee83 min
Jun 10, 12:17 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Bay, Cheboygan and 15 more58 min
Jun 10, 3:03 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Eaton, Genesee, Hillsdale, Ingham and 13 more87 min
Jun 21, 4:22 PM EDTMesoscale DiscussionSPCGogebic, Ontonagon113 min
Jun 21, 7:14 PM EDTMesoscale DiscussionSPCGogebic2 hr
Jun 26, 7:39 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 12 more66 min
Jun 26, 9:09 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Kalamazoo and 2 more66 min
Jul 6, 4:48 PM EDTMesoscale DiscussionSPCAlger, Chippewa, Delta, Luce, Mackinac, Menominee and 1 more87 min
Jul 8, 10:51 PM EDTMesoscale DiscussionSPCGogebic, Ontonagon114 min
Jul 10, 12:33 PM EDTMesoscale DiscussionSPCMonroe, Wayne87 min
Jul 17, 10:03 PM EDTMesoscale DiscussionSPCGogebic117 min
Jul 18, 12:36 AM EDTMesoscale DiscussionSPCGogebic, Ontonagon114 min
Jul 18, 5:02 AM EDTMesoscale DiscussionSPCBaraga, Dickinson, Iron, Marquette88 min
Jul 18, 10:30 AM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Cheboygan, Crawford and 12 more2 hr
Jul 18, 4:32 PM EDTMesoscale DiscussionSPCAlpena, Antrim, Cheboygan, Crawford, Emmet, Kalkaska and 4 more88 min
Jul 18, 9:36 PM EDTMesoscale DiscussionSPCBaraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 2 more114 min
Jul 19, 2:13 AM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Iron, Marquette and 2 more92 min
Jul 19, 4:22 AM EDTMesoscale DiscussionSPCAlpena, Antrim, Benzie, Charlevoix, Cheboygan, Clare and 15 more83 min
Jul 19, 8:42 AM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Clinton and 27 more2 hr
Jul 19, 11:12 AM EDTMesoscale DiscussionSPCBerrien93 min
Jul 19, 1:19 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph86 min
Jul 26, 6:33 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Clare, Crawford, Gladwin, Grand Traverse and 17 more87 min
Aug 9, 4:46 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Iron, Ontonagon89 min
Aug 9, 8:01 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Iron, Marquette, Ontonagon119 min
Aug 9, 11:11 PM EDTMesoscale DiscussionSPCAlger, Delta, Dickinson, Luce, Mackinac, Marquette and 2 more34 min
Aug 10, 1:44 PM EDTMesoscale DiscussionSPCDelta, Dickinson, Iron, Menominee61 min
Aug 10, 3:28 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 9 more92 min
Aug 10, 4:36 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Ottawa, Van Buren84 min
Aug 10, 4:46 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Chippewa, Clare and 24 more89 min
Aug 10, 6:17 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 23 more118 min
Aug 10, 8:16 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Benzie, Cheboygan and 24 more119 min
Aug 10, 8:29 PM EDTMesoscale DiscussionSPCHillsdale, Jackson, Lenawee91 min
Aug 21, 6:26 PM EDTMesoscale DiscussionSPCDickinson, Iron, Menominee94 min
Aug 25, 11:07 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Cass, Kalamazoo, Kent and 5 more113 min
Aug 26, 12:40 AM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Menominee, Ontonagon3 hr
Aug 26, 7:19 PM EDTMesoscale DiscussionSPCGogebic, Ontonagon86 min
Aug 27, 11:02 AM EDTMesoscale DiscussionSPCBay, Clare, Genesee, Gladwin, Gratiot, Huron and 15 more118 min
Aug 28, 1:32 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Cass, Hillsdale, Jackson, Kalamazoo and 4 more88 min
Aug 28, 1:50 PM EDTMesoscale DiscussionSPCAllegan, Barry, Clare, Clinton, Eaton, Gratiot and 16 more85 min
Aug 28, 4:24 PM EDTMesoscale DiscussionSPCBay, Genesee, Gratiot, Lapeer, Midland, Saginaw and 3 more96 min
Aug 28, 9:15 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Clinton, Eaton, Genesee and 19 more3 hr
Aug 28, 11:41 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Eaton, Hillsdale and 7 more94 min
Sep 3, 11:55 AM EDTMesoscale DiscussionSPCAntrim, Cheboygan, Crawford, Kalkaska, Montmorency, Oscoda and 2 more2 hr
Sep 6, 7:47 PM EDTMesoscale DiscussionSPCClare, Gladwin, Isabella, Lake, Manistee, Mason and 10 more118 min
Sep 7, 12:20 AM EDTMesoscale DiscussionSPCAlcona, Arenac, Bay, Clare, Gladwin, Gratiot and 22 more115 min
Sep 25, 6:31 PM EDTMesoscale DiscussionSPCGogebic, Houghton, Ontonagon119 min
Sep 25, 9:47 PM EDTMesoscale DiscussionSPCIron118 min
Sep 26, 4:07 PM EDTMesoscale DiscussionSPCDelta, Dickinson, Iron, Leelanau, Menominee, Schoolcraft83 min
Sep 26, 6:17 PM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron118 min
Sep 26, 9:59 PM EDTMesoscale DiscussionSPCAlger, Dickinson2 hr
Oct 20, 8:06 PM EDTMesoscale DiscussionSPCDickinson, Iron4 hr
Oct 23, 1:21 PM EDTMesoscale DiscussionSPCBranch, Genesee, Hillsdale, Ingham, Jackson, Lapeer and 9 more114 min
Nov 10, 7:04 PM ESTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kent, Mecosta, Muskegon and 4 more116 min
Nov 10, 9:31 PM ESTMesoscale DiscussionSPCAllegan, Barry, Cass, Clare, Gladwin, Gratiot and 10 more89 min
Nov 15, 9:58 AM ESTMesoscale DiscussionSPCLenawee, Macomb, Monroe, Oakland, Saint Clair, Washtenaw and 1 more92 min
Dec 12, 10:01 AM ESTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Cheboygan, Crawford and 11 more4 hr
Dec 12, 1:54 PM ESTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Cheboygan, Crawford, Kalkaska and 6 more4 hr
Dec 23, 6:15 PM ESTMesoscale DiscussionSPCGogebic6 hr
Dec 29, 8:50 PM ESTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clare and 33 more4 hr
Dec 30, 2:15 AM ESTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 20 more6 hr

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. August 10, 20207mesoscale discussions
  2. July 19, 20206mesoscale discussions
  3. July 18, 20205mesoscale discussions
  4. June 10, 20204mesoscale discussions
  5. April 7, 20203mesoscale discussions
  6. August 28, 20203mesoscale discussions
  7. September 26, 20203mesoscale discussions
  8. June 3, 20202mesoscale discussions
  9. June 21, 20202mesoscale discussions
  10. August 11, 20202mesoscale discussions
  11. August 26, 20202mesoscale discussions
  12. August 29, 20202mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.