Alert archive / Michigan / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Michigan, September 2021
78 severe thunderstorm warnings in September 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in September 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 78
- Busiest day
- September 7, 202149 severe thunderstorm warnings
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 7, 4:20 AM EDT | Severe Thunderstorm Warning | MQT | Baraga | 25 min |
| Sep 7, 4:44 AM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 46 min |
| Sep 7, 8:40 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 50 min |
| Sep 7, 8:57 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee | 33 min |
| Sep 7, 9:25 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 50 min |
| Sep 7, 9:29 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Manistee, Missaukee, Wexford | 46 min |
| Sep 7, 10:26 AM EDT | Severe Thunderstorm Warning | APX | Missaukee, Wexford | 34 min |
| Sep 7, 11:06 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Missaukee, Ogemaw, Oscoda, Roscommon | 24 min |
| Sep 7, 11:24 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Manistee | 51 min |
| Sep 7, 11:28 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska | 47 min |
| Sep 7, 11:30 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Crawford, Iosco, Ogemaw, Oscoda, Roscommon | 45 min |
| Sep 7, 11:56 AM EDT | Severe Thunderstorm Warning | APX | Manistee, Missaukee, Wexford | 34 min |
| Sep 7, 12:00 PM EDT | Severe Thunderstorm Warning | APX | Manistee | 30 min |
| Sep 7, 12:08 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco, Ogemaw | 14 min |
| Sep 7, 12:25 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 65 min |
| Sep 7, 12:28 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon, Wexford | 47 min |
| Sep 7, 12:32 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Osceola | 58 min |
| Sep 7, 12:54 PM EDT | Severe Thunderstorm Warning | GRR | Oceana | 66 min |
| Sep 7, 1:09 PM EDT | Severe Thunderstorm Warning | APX | Iosco | 16 min |
| Sep 7, 1:13 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Newaygo | 37 min |
| Sep 7, 1:29 PM EDT | Severe Thunderstorm Warning | APX | Wexford | 19 min |
| Sep 7, 1:31 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon | 29 min |
| Sep 7, 1:37 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Iosco | 38 min |
| Sep 7, 1:39 PM EDT | Severe Thunderstorm Warning | GRR | Osceola | 38 min |
| Sep 7, 1:47 PM EDT | Severe Thunderstorm Warning | APX | Iosco, Ogemaw | 58 min |
| Sep 7, 1:51 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Oceana | 54 min |
| Sep 7, 2:03 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 46 min |
| Sep 7, 2:20 PM EDT | Severe Thunderstorm Warning | GRR | Isabella, Mecosta, Newaygo | 55 min |
| Sep 7, 2:22 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Iosco, Ogemaw | 53 min |
| Sep 7, 2:40 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 39 min |
| Sep 7, 2:54 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 66 min |
| Sep 7, 3:04 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 56 min |
| Sep 7, 3:24 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 66 min |
| Sep 7, 3:26 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia | 64 min |
| Sep 7, 3:30 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 75 min |
| Sep 7, 3:53 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 82 min |
| Sep 7, 4:03 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 27 min |
| Sep 7, 4:05 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 55 min |
| Sep 7, 4:27 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass, Saint Joseph | 48 min |
| Sep 7, 4:45 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 31 min |
| Sep 7, 4:49 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kalamazoo | 42 min |
| Sep 7, 5:13 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Eaton | 47 min |
| Sep 7, 5:24 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 19 min |
| Sep 7, 5:40 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 50 min |
| Sep 7, 5:55 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Shiawassee | 80 min |
| Sep 7, 6:01 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 29 min |
| Sep 7, 7:36 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 17 min |
| Sep 7, 7:46 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 29 min |
| Sep 7, 7:55 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 33 min |
| Sep 12, 4:56 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 34 min |
| Sep 12, 4:57 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 62 min |
| Sep 12, 5:32 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 58 min |
| Sep 12, 6:09 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 26 min |
| Sep 12, 6:40 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Ottawa | 35 min |
| Sep 12, 7:16 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot, Montcalm | 45 min |
| Sep 12, 7:37 PM EDT | Severe Thunderstorm Warning | DTX | Midland, Saginaw | 57 min |
| Sep 12, 8:16 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 41 min |
| Sep 12, 8:32 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 39 min |
| Sep 12, 8:56 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair, Sanilac | 39 min |
| Sep 13, 11:37 AM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 53 min |
| Sep 13, 1:18 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 16 min |
| Sep 13, 1:19 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Shiawassee | 56 min |
| Sep 14, 9:22 AM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Presque Isle | 23 min |
| Sep 14, 9:34 AM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Otsego | 26 min |
| Sep 14, 2:52 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw | 53 min |
| Sep 14, 3:41 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 24 min |
| Sep 14, 3:54 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 49 min |
| Sep 14, 4:03 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Washtenaw | 24 min |
| Sep 14, 4:04 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac | 35 min |
| Sep 14, 4:11 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland, Wayne | 36 min |
| Sep 14, 4:19 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 56 min |
| Sep 14, 4:28 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 62 min |
| Sep 14, 5:49 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 41 min |
| Sep 14, 5:58 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 43 min |
| Sep 14, 6:01 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 59 min |
| Sep 14, 7:25 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 80 min |
| Sep 14, 7:53 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 67 min |
| Sep 14, 8:30 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Wayne | 36 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Missaukee County6
- Iosco County6
- Manistee County5
- Wexford County5
- Ogemaw County5
- Saginaw County5
- Oakland County5
- Benzie County4
- Grand Traverse County4
- Roscommon County4
- Midland County4
- Livingston County4
- Shiawassee County4
- Macomb County4
- Kalkaska County3
- Crawford County3
- Alcona County3
- Ottawa County3
- Bay County3
- Gratiot County3
- Tuscola County3
- Saint Joseph County3
- Lenawee County3
- Lapeer County3
- Sanilac County3
- Baraga County2
- Oscoda County2
- Lake County2
- Osceola County2
- Oceana County2
- Newaygo County2
- Muskegon County2
- Kent County2
- Montcalm County2
- Huron County2
- Clinton County2
- Berrien County2
- Cass County2
- Barry County2
- Ingham County2
27 more counties
- Genesee County2
- Cheboygan County2
- Monroe County2
- Washtenaw County2
- Wayne County2
- Marquette County1
- Leelanau County1
- Antrim County1
- Mason County1
- Alpena County1
- Clare County1
- Isabella County1
- Mecosta County1
- Arenac County1
- Gladwin County1
- Ionia County1
- Van Buren County1
- Allegan County1
- Kalamazoo County1
- Calhoun County1
- Eaton County1
- Branch County1
- Jackson County1
- Hillsdale County1
- Saint Clair County1
- Presque Isle County1
- Otsego 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. Rebuilt daily.