Mesoscale Discussions in Michigan
2,179 mesoscale discussions since 1986. 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 since 1986. Tap one for its archive.
- Mesoscale Discussions
- 2,179
- Busiest year
- 2004144 mesoscale discussions
- Average year
- 91over 24 years on file
Over time
By year
Mesoscale discussions are counted from 2003.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Branch County709
- Saint Joseph County703
- Hillsdale County679
- Calhoun County675
- Cass County663
- Kalamazoo County662
- Lenawee County648
- Jackson County645
- Eaton County630
- Ingham County625
- Washtenaw County614
- Livingston County603
- Barry County596
- Monroe County551
- Berrien County548
- Shiawassee County545
- Clinton County544
- Ionia County539
- Oakland County537
- Wayne County537
- Genesee County510
- Kent County498
- Van Buren County498
- Gratiot County484
- Montcalm County477
- Allegan County468
- Lapeer County450
- Macomb County448
- Saginaw County444
- Isabella County419
- Midland County417
- Mecosta County413
- Tuscola County382
- Newaygo County377
- Bay County374
- Osceola County364
- Gladwin County362
- Clare County361
- Roscommon County346
- Ottawa County343
43 more counties
- Lake County341
- Missaukee County339
- Saint Clair County337
- Iron County327
- Ogemaw County321
- Wexford County316
- Crawford County310
- Arenac County309
- Dickinson County305
- Kalkaska County300
- Oscoda County294
- Menominee County290
- Gogebic County277
- Grand Traverse County276
- Otsego County275
- Manistee County274
- Muskegon County271
- Antrim County269
- Oceana County268
- Sanilac County266
- Mason County265
- Montmorency County261
- Benzie County229
- Delta County229
- Huron County226
- Baraga County218
- Cheboygan County203
- Iosco County202
- Alpena County200
- Ontonagon County182
- Alcona County176
- Marquette County176
- Emmet County169
- Leelanau County167
- Schoolcraft County167
- Charlevoix County146
- Houghton County146
- Alger County144
- Presque Isle County137
- Mackinac County124
- Luce County104
- Chippewa County86
- Keweenaw County72
The latest mesoscale discussions
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 1:41 AM EDT | Mesoscale Discussion | SPC | Branch, Cass, Hillsdale, Lenawee, Saint Joseph | 94 min |
| Sep 4, 10:01 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 5 more | 3 hr |
| Sep 4, 4:40 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Branch, Calhoun, Cass, Eaton and 14 more | 2 hr |
| Sep 3, 4:02 PM EDT | Mesoscale Discussion | SPC | Lenawee, Macomb, Monroe, Oakland, Washtenaw, Wayne | 118 min |
| Sep 3, 1:44 PM EDT | Mesoscale Discussion | SPC | Barry, Calhoun, Clinton, Eaton, Genesee, Gratiot and 15 more | 3 hr |
| Sep 3, 8:52 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Clinton, Eaton, Genesee, Gratiot and 25 more | 83 min |
| Sep 2, 10:37 PM EDT | Mesoscale Discussion | SPC | Clinton, Eaton, Ingham, Jackson, Livingston, Macomb and 5 more | 83 min |
| Sep 2, 4:46 PM EDT | Mesoscale Discussion | SPC | Hillsdale, Lenawee, Macomb, Monroe, Oakland, Washtenaw and 1 more | 89 min |
| Sep 2, 3:21 PM EDT | Mesoscale Discussion | SPC | Bay, Huron, Sanilac, Tuscola | 84 min |
| Sep 2, 6:37 AM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Benzie, Clare, Crawford, Genesee and 24 more | 113 min |
| Aug 26, 1:22 PM EDT | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Eaton, Hillsdale and 8 more | 113 min |
| Aug 18, 5:52 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 29 more | 113 min |
Nearby
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.