Alert archive / Michigan / Mesoscale Discussions / 2018
Mesoscale Discussions in Michigan, September 2018
7 mesoscale discussions in September 2018. 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 September 2018. Tap one for its archive.
- Mesoscale Discussions
- 7
- Busiest day
- September 1, 20182 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 |
|---|---|---|---|---|
| Sep 1, 1:53 AM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Keweenaw, Marquette, Ontonagon | 2 hr |
| Sep 1, 6:57 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Calhoun, Clinton, Eaton, Genesee and 14 more | 63 min |
| Sep 2, 8:27 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Clare, Crawford, Gladwin, Isabella and 11 more | 63 min |
| Sep 20, 4:16 PM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Branch, Calhoun, Cass, Hillsdale and 3 more | 89 min |
| Sep 21, 2:29 AM EDT | Mesoscale Discussion | SPC | Benzie, Charlevoix, Emmet, Leelanau, Mackinac, Manistee | 2 hr |
| Sep 21, 1:14 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Genesee, Hillsdale, Huron, Ingham and 12 more | 91 min |
| Sep 25, 6:21 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Branch, Calhoun, Cass, Clinton and 25 more | 114 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Calhoun County4
- Allegan County3
- Genesee County3
- Ingham County3
- Jackson County3
- Kalamazoo County3
- Livingston County3
- Oakland County3
- Van Buren County3
- Washtenaw County3
- Wayne County3
- Branch County3
- Hillsdale County3
- Barry County2
- Clinton County2
- Eaton County2
- Gratiot County2
- Ionia County2
- Kent County2
- Montcalm County2
- Shiawassee County2
- Isabella County2
- Midland County2
- Cass County2
- Saint Joseph County2
- Lapeer County2
- Lenawee County2
- Macomb County2
- Monroe County2
- Tuscola County2
- Baraga County1
- Gogebic County1
- Houghton County1
- Keweenaw County1
- Marquette County1
- Ontonagon County1
- Ottawa County1
- Arenac County1
- Bay County1
- Clare County1
23 more counties
- Crawford County1
- Gladwin County1
- Kalkaska County1
- Lake County1
- Mecosta County1
- Missaukee County1
- Newaygo County1
- Ogemaw County1
- Osceola County1
- Oscoda County1
- Roscommon County1
- Wexford County1
- Berrien County1
- Benzie County1
- Charlevoix County1
- Emmet County1
- Leelanau County1
- Mackinac County1
- Manistee County1
- Huron County1
- Saint Clair County1
- Sanilac County1
- Saginaw County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.