Alert archive / Michigan / Mesoscale Discussions / 2021
Mesoscale Discussions in Michigan, December 2021
3 mesoscale discussions in December 2021. 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 December 2021. Tap one for its archive.
- Mesoscale Discussions
- 3
- Busiest day
- December 5, 20212 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 |
|---|---|---|---|---|
| Dec 5, 5:22 AM EST | Mesoscale Discussion | SPC | Dickinson, Gogebic, Iron, Menominee, Ontonagon | 6 hr |
| Dec 5, 1:40 PM EST | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Clare and 20 more | 4 hr |
| Dec 11, 12:46 AM EST | Mesoscale Discussion | SPC | Alger, Baraga, Dickinson, Iron, Marquette | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Dickinson County2
- Iron County2
- Gogebic County1
- Menominee County1
- Ontonagon County1
- Alcona County1
- Alpena County1
- Antrim County1
- Arenac County1
- Benzie County1
- Clare County1
- Crawford County1
- Gladwin County1
- Grand Traverse County1
- Iosco County1
- Isabella County1
- Kalkaska County1
- Lake County1
- Manistee County1
- Mason County1
- Mecosta County1
- Midland County1
- Missaukee County1
- Montmorency County1
- Newaygo County1
- Ogemaw County1
- Osceola County1
- Oscoda County1
- Otsego County1
- Roscommon County1
- Wexford County1
- Alger County1
- Baraga County1
- Marquette County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.