Alert archive / Michigan / Mesoscale Discussions / 2026
Mesoscale Discussions in Michigan, May 2026
11 mesoscale discussions in May 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 May 2026. Tap one for its archive.
- Mesoscale Discussions
- 11
- Busiest day
- May 18, 20263 mesoscale discussions
Over time
By day
Days in UTC, the clock the archive keeps.
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 4:42 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more | 2 hr |
| May 9, 1:29 PM EDT | Mesoscale Discussion | SPC | Hillsdale, Huron, Lapeer, Lenawee, Livingston, Macomb and 6 more | 2 hr |
| May 12, 5:36 PM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Delta, Grand Traverse, Kalkaska and 7 more | 114 min |
| May 15, 6:41 PM EDT | Mesoscale Discussion | SPC | Iron | 2 hr |
| May 17, 3:32 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Clare, Clinton, Genesee, Gladwin and 26 more | 2 hr |
| May 17, 6:22 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Clare, Gladwin, Huron, Lake and 7 more | 53 min |
| May 18, 12:38 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 25 more | 67 min |
| May 18, 2:50 PM EDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Saint Joseph | 85 min |
| May 18, 3:16 PM EDT | Mesoscale Discussion | SPC | Bay, Branch, Calhoun, Clinton, Eaton, Genesee and 20 more | 89 min |
| May 19, 1:44 PM EDT | Mesoscale Discussion | SPC | Branch, Genesee, Hillsdale, Jackson, Lapeer, Lenawee and 8 more | 91 min |
| May 19, 6:11 PM EDT | Mesoscale Discussion | SPC | Monroe | 64 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hillsdale County6
- Branch County5
- Lenawee County5
- Lapeer County5
- Monroe County5
- Sanilac County5
- Jackson County4
- Livingston County4
- Macomb County4
- Oakland County4
- Washtenaw County4
- Wayne County4
- Genesee County4
- Tuscola County4
- Calhoun County3
- Eaton County3
- Saint Joseph County3
- Huron County3
- Saint Clair County3
- Lake County3
- Manistee County3
- Osceola County3
- Wexford County3
- Bay County3
- Clinton County3
- Gratiot County3
- Ionia County3
- Kent County3
- Midland County3
- Saginaw County3
- Shiawassee County3
- Allegan County2
- Barry County2
- Berrien County2
- Cass County2
- Kalamazoo County2
- Van Buren County2
- Mason County2
- Arenac County2
- Clare County2
22 more counties
- Gladwin County2
- Isabella County2
- Missaukee County2
- Montcalm County2
- Ingham County2
- Antrim County1
- Benzie County1
- Charlevoix County1
- Delta County1
- Grand Traverse County1
- Kalkaska County1
- Leelanau County1
- Menominee County1
- Iron County1
- Iosco County1
- Mecosta County1
- Muskegon County1
- Newaygo County1
- Oceana County1
- Ogemaw County1
- Ottawa County1
- Roscommon County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.