Alert archive / Michigan / Mesoscale Discussions

Mesoscale Discussions in Michigan, 2017

73 mesoscale discussions in 2017. 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 2017. Tap one for its archive.

Mesoscale Discussions
73
Busiest month
June20 mesoscale discussions
Busiest day
March 1, 20175 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, 7:32 PM ESTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Bay, Clare, Crawford and 15 more6 hr
Jan 12, 4:05 AM ESTMesoscale DiscussionSPCBarry, Berrien, Branch, Calhoun, Cass, Eaton and 8 more6 hr
Jan 16, 7:36 PM ESTMesoscale DiscussionSPCAntrim, Arenac, Bay, Clare, Crawford, Gladwin and 17 more6 hr
Feb 24, 2:45 PM ESTMesoscale DiscussionSPCLenawee, Monroe, Washtenaw, Wayne60 min
Feb 24, 3:07 PM ESTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Ingham and 5 more2 hr
Feb 24, 5:56 PM ESTMesoscale DiscussionSPCBranch, Calhoun, Eaton, Genesee, Hillsdale, Ingham and 12 more94 min
Feb 24, 6:03 PM ESTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Bay, Clare, Crawford and 17 more87 min
Feb 28, 6:24 PM ESTMesoscale DiscussionSPCBerrien96 min
Feb 28, 7:00 PM ESTMesoscale DiscussionSPCBranch, Calhoun, Cass, Hillsdale, Jackson, Kalamazoo and 3 more90 min
Feb 28, 9:41 PM ESTMesoscale DiscussionSPCBranch, Calhoun, Cass, Hillsdale, Jackson, Lenawee and 4 more94 min
Feb 28, 11:03 PM ESTMesoscale DiscussionSPCBranch, Hillsdale, Lenawee117 min
Mar 1, 12:52 AM ESTMesoscale DiscussionSPCBerrien, Cass, Kalamazoo, Saint Joseph53 min
Mar 1, 1:44 AM ESTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Jackson, Kalamazoo, Lenawee and 3 more61 min
Mar 7, 2:53 AM ESTMesoscale DiscussionSPCBerrien97 min
Mar 26, 2:28 AM EDTMesoscale DiscussionSPCAlger, Baraga, Chippewa, Iron, Luce, Mackinac and 2 more6 hr
Apr 10, 3:16 AM EDTMesoscale DiscussionSPCAlger, Delta, Dickinson, Marquette, Menominee, Schoolcraft119 min
Apr 10, 12:57 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Van Buren3 hr
Apr 10, 4:25 PM EDTMesoscale DiscussionSPCAllegan, Berrien, Branch, Cass, Kalamazoo, Ottawa and 2 more2 hr
Apr 10, 7:22 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 18 more53 min
Apr 10, 9:58 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Cass, Clinton, Eaton and 5 more62 min
Apr 19, 2:50 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Eaton and 11 more115 min
Apr 20, 1:36 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Eaton, Hillsdale and 11 more84 min
Apr 20, 4:31 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Eaton, Hillsdale, Ingham, Jackson and 8 more119 min
Apr 20, 7:01 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Jackson, Lenawee, Monroe and 2 more59 min
May 16, 7:25 PM EDTMesoscale DiscussionSPCGogebic, Iron65 min
May 16, 10:14 PM EDTMesoscale DiscussionSPCDickinson, Iron, Menominee61 min
May 28, 12:54 PM EDTMesoscale DiscussionSPCAlpena, Antrim, Cheboygan, Clare, Crawford, Emmet and 11 more66 min
May 28, 1:16 PM EDTMesoscale DiscussionSPCBarry, Berrien, Branch, Calhoun, Cass, Eaton and 9 more119 min
May 28, 4:09 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Jackson, Lenawee, Livingston and 6 more66 min
May 28, 5:46 PM EDTMesoscale DiscussionSPCLenawee, Macomb, Monroe, Oakland, Washtenaw, Wayne59 min
Jun 3, 3:48 PM EDTMesoscale DiscussionSPCBaraga, Dickinson, Gogebic, Iron, Menominee, Ontonagon57 min
Jun 3, 6:58 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Delta, Grand Traverse, Leelanau and 5 more92 min
Jun 10, 9:12 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Keweenaw, Ontonagon2 hr
Jun 11, 10:30 AM EDTMesoscale DiscussionSPCIron60 min
Jun 11, 1:00 PM EDTMesoscale DiscussionSPCDickinson, Menominee2 hr
Jun 11, 3:46 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Charlevoix, Cheboygan, Chippewa and 11 more119 min
Jun 11, 7:20 PM EDTMesoscale DiscussionSPCIron2 hr
Jun 11, 10:39 PM EDTMesoscale DiscussionSPCDelta, Dickinson, Menominee2 hr
Jun 12, 12:59 AM EDTMesoscale DiscussionSPCDelta, Menominee91 min
Jun 12, 6:48 PM EDTMesoscale DiscussionSPCClare, Lake, Manistee, Mason, Missaukee, Osceola and 2 more2 hr
Jun 12, 10:30 PM EDTMesoscale DiscussionSPCAlcona, Arenac, Bay, Benzie, Clare, Clinton and 29 more90 min
Jun 13, 12:58 AM EDTMesoscale DiscussionSPCAlcona, Alpena, Crawford, Gladwin, Iosco, Montmorency and 3 more92 min
Jun 14, 4:02 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more118 min
Jun 14, 5:59 PM EDTMesoscale DiscussionSPCAllegan, Barry, Benzie, Berrien, Branch, Calhoun and 20 more91 min
Jun 15, 7:06 PM EDTMesoscale DiscussionSPCAlger, Chippewa, Delta, Luce, Mackinac, Schoolcraft54 min
Jun 16, 3:25 PM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Gogebic, Iron and 6 more2 hr
Jun 16, 4:53 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Clare, Crawford, Gladwin, Iosco and 8 more97 min
Jun 17, 4:54 PM EDTMesoscale DiscussionSPCGenesee, Ingham, Lapeer, Livingston, Macomb, Oakland and 4 more2 hr
Jun 19, 1:44 PM EDTMesoscale DiscussionSPCBerrien3 hr
Jun 30, 1:56 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Jackson, Lenawee, Livingston, Monroe and 3 more2 hr
Jul 6, 6:43 AM EDTMesoscale DiscussionSPCBaraga, Dickinson, Gogebic, Houghton, Iron, Marquette and 1 more2 hr
Jul 6, 3:00 PM EDTMesoscale DiscussionSPCHoughton, Ontonagon60 min
Jul 6, 6:04 PM EDTMesoscale DiscussionSPCGogebic, Iron, Menominee116 min
Jul 6, 10:43 PM EDTMesoscale DiscussionSPCBenzie, Delta, Grand Traverse, Leelanau, Manistee, Mason and 2 more92 min
Jul 7, 3:35 AM EDTMesoscale DiscussionSPCBarry, Calhoun, Clinton, Eaton, Ingham, Ionia and 4 more115 min
Jul 12, 9:33 AM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 2 more117 min
Jul 12, 10:36 PM EDTMesoscale DiscussionSPCBenzie, Manistee, Mason84 min
Jul 13, 3:19 AM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Clare and 33 more3 hr
Jul 18, 3:19 PM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Iron, Marquette and 2 more116 min
Jul 19, 11:01 PM EDTMesoscale DiscussionSPCBerrien, Cass119 min
Jul 21, 7:28 PM EDTMesoscale DiscussionSPCBerrien, Van Buren92 min
Jul 21, 9:35 PM EDTMesoscale DiscussionSPCBerrien, Van Buren115 min
Jul 22, 12:23 AM EDTMesoscale DiscussionSPCBerrien, Van Buren67 min
Jul 23, 2:03 PM EDTMesoscale DiscussionSPCBerrien, Cass, Saint Joseph2 hr
Aug 3, 5:45 PM EDTMesoscale DiscussionSPCAntrim, Clare, Crawford, Grand Traverse, Kalkaska, Lake and 9 more90 min
Aug 10, 6:31 PM EDTMesoscale DiscussionSPCMason, Muskegon, Oceana89 min
Aug 17, 12:04 PM EDTMesoscale DiscussionSPCHillsdale, Lenawee, Monroe116 min
Aug 17, 7:20 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Bay, Cheboygan, Genesee and 13 more115 min
Sep 4, 3:17 PM EDTMesoscale DiscussionSPCBranch, Hillsdale, Jackson, Lenawee, Livingston, Macomb and 5 more118 min
Sep 4, 6:50 PM EDTMesoscale DiscussionSPCLenawee, Macomb, Monroe, Washtenaw, Wayne115 min
Sep 22, 11:20 AM EDTMesoscale DiscussionSPCAlger, Baraga, Delta, Dickinson, Gogebic, Houghton and 4 more85 min
Oct 7, 5:40 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Kalamazoo, Saint Joseph3 hr
Oct 14, 10:04 PM EDTMesoscale DiscussionSPCBerrien86 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. March 1, 20175mesoscale discussions
  2. June 11, 20175mesoscale discussions
  3. February 24, 20174mesoscale discussions
  4. April 10, 20174mesoscale discussions
  5. May 28, 20174mesoscale discussions
  6. April 20, 20173mesoscale discussions
  7. June 12, 20173mesoscale discussions
  8. July 6, 20173mesoscale discussions
  9. January 12, 20172mesoscale discussions
  10. June 3, 20172mesoscale discussions
  11. June 13, 20172mesoscale discussions
  12. June 14, 20172mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20162018

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.