Alert archive / Michigan / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Michigan, 2021
20 severe thunderstorm watches in 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 20
- Busiest month
- August6 severe thunderstorm watches
- Busiest day
- August 11, 20214 severe thunderstorm watches
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 3:53 PM EDT | Severe Thunderstorm Watch | SPC | Baraga, Delta, Dickinson, Gogebic, Houghton, Iron and 2 more | 8 hr |
| Jun 19, 8:50 PM EDT | Severe Thunderstorm Watch | SPC | Branch, Hillsdale | 3 hr |
| Jun 20, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 22 more | 7 hr |
| Jun 21, 1:00 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more | 7 hr |
| Jul 7, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | Barry, Branch, Calhoun, Clinton, Eaton, Genesee and 16 more | 7 hr |
| Jul 24, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Allegan, Arenac, Barry, Bay, Calhoun and 40 more | 7 hr |
| Jul 24, 4:32 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 6 hr |
| Jul 29, 2:00 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Berrien, Branch, Cass, Kalamazoo, Saint Joseph and 1 more | 5 hr |
| Aug 10, 8:38 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Benzie, Berrien, Branch, Calhoun and 31 more | 5 hr |
| Aug 11, 11:50 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 14 more | 4 hr |
| Aug 11, 2:32 PM EDT | Severe Thunderstorm Watch | SPC | Bay, Genesee, Huron, Lapeer, Lenawee, Livingston and 11 more | 4 hr |
| Aug 11, 4:48 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 17 more | 3 hr |
| Aug 11, 9:22 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 9 more | 8 hr |
| Aug 29, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 42 more | 6 hr |
| Sep 7, 12:21 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Arenac, Bay, Clare, Crawford, Gladwin and 20 more | 6 hr |
| Sep 7, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 24 more | 7 hr |
| Sep 12, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Clinton, Eaton, Gratiot, Ingham and 5 more | 3 hr |
| Sep 12, 5:22 PM EDT | Severe Thunderstorm Watch | SPC | Genesee, Lapeer, Livingston, Macomb, Oakland, Saginaw and 4 more | 4 hr |
| Sep 14, 3:08 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Allegan, Arenac, Barry, Bay, Berrien and 36 more | 7 hr |
| Dec 15, 10:44 PM EST | Severe Thunderstorm Watch | SPC | Delta, Menominee | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Branch County11
- Hillsdale County10
- Allegan County10
- Barry County10
- Eaton County10
- Ingham County10
- Kalamazoo County10
- Saint Joseph County10
- Berrien County9
- Calhoun County9
- Cass County9
- Clinton County9
- Jackson County9
- Livingston County9
- Macomb County9
- Oakland County9
- Van Buren County9
- Genesee County8
- Ionia County8
- Lapeer County8
- Saint Clair County8
- Kent County7
- Lenawee County7
- Monroe County7
- Ottawa County7
- Shiawassee County7
- Washtenaw County7
- Wayne County7
- Saginaw County7
- Gratiot County7
- Montcalm County7
- Muskegon County6
- Sanilac County6
- Tuscola County6
- Alcona County5
- Arenac County5
- Bay County5
- Crawford County5
- Gladwin County5
- Huron County5
38 more counties
- Iosco County5
- Isabella County5
- Midland County5
- Missaukee County5
- Ogemaw County5
- Roscommon County5
- Clare County4
- Mecosta County4
- Newaygo County4
- Osceola County4
- Oscoda County4
- Manistee County4
- Wexford County4
- Benzie County3
- Grand Traverse County3
- Kalkaska County3
- Lake County3
- Leelanau County3
- Mason County3
- Oceana County3
- Delta County2
- Menominee County2
- Alpena County2
- Antrim County2
- Charlevoix County2
- Cheboygan County2
- Emmet County2
- Montmorency County2
- Otsego County2
- Presque Isle County2
- Baraga County1
- Dickinson County1
- Gogebic County1
- Houghton County1
- Iron County1
- Ontonagon County1
- Chippewa County1
- Mackinac County1
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.