Alert archive / Michigan / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Michigan, August 2021
155 severe thunderstorm warnings in August 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 August 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 155
- Busiest day
- August 11, 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 |
|---|---|---|---|---|
| Jul 31, 8:42 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee, Wexford | 24 min |
| Aug 6, 8:33 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 39 min |
| Aug 9, 1:49 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Washtenaw | 30 min |
| Aug 9, 3:13 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Wayne | 44 min |
| Aug 9, 3:34 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 56 min |
| Aug 10, 1:18 AM EDT | Severe Thunderstorm Warning | IWX | Cass | 27 min |
| Aug 10, 1:53 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 52 min |
| Aug 10, 2:00 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton, Iron, Ontonagon | 45 min |
| Aug 10, 2:08 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton, Ontonagon | 52 min |
| Aug 10, 2:23 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 52 min |
| Aug 10, 2:29 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton, Iron | 46 min |
| Aug 10, 3:07 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 53 min |
| Aug 10, 3:46 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron, Marquette | 44 min |
| Aug 10, 3:51 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 39 min |
| Aug 10, 4:13 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette | 47 min |
| Aug 10, 4:15 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Gogebic, Houghton, Iron, Ontonagon | 45 min |
| Aug 10, 4:35 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Dickinson, Marquette, Menominee | 25 min |
| Aug 10, 4:53 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Marquette | 52 min |
| Aug 10, 5:54 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 51 min |
| Aug 10, 9:40 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren | 73 min |
| Aug 10, 9:44 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix | 46 min |
| Aug 10, 9:56 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 49 min |
| Aug 10, 10:02 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Kalamazoo, Kent, Lake, Newaygo | 58 min |
| Aug 10, 10:03 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 27 min |
| Aug 10, 10:04 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau, Manistee, Wexford | 41 min |
| Aug 10, 10:18 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 57 min |
| Aug 10, 10:30 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Kalkaska | 30 min |
| Aug 10, 10:41 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Ionia, Mecosta, Montcalm, Osceola | 64 min |
| Aug 10, 10:42 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 48 min |
| Aug 10, 10:45 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Leelanau, Missaukee, Wexford | 45 min |
| Aug 10, 10:58 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 32 min |
| Aug 10, 11:09 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Clinton, Gratiot, Ingham, Isabella, Jackson | 66 min |
| Aug 10, 11:24 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 51 min |
| Aug 10, 11:28 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee, Roscommon | 32 min |
| Aug 10, 11:43 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 62 min |
| Aug 11, 12:02 AM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Oakland, Shiawassee, Washtenaw | 58 min |
| Aug 11, 12:28 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Arenac, Iosco, Ogemaw, Oscoda | 47 min |
| Aug 11, 12:31 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Montmorency, Oscoda, Presque Isle | 44 min |
| Aug 11, 12:43 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Huron, Saginaw, Tuscola | 47 min |
| Aug 11, 12:51 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 28 min |
| Aug 11, 1:39 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 36 min |
| Aug 11, 1:56 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 38 min |
| Aug 11, 2:02 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 43 min |
| Aug 11, 2:08 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 58 min |
| Aug 11, 2:11 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia, Montcalm | 49 min |
| Aug 11, 2:22 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 68 min |
| Aug 11, 2:31 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 42 min |
| Aug 11, 2:38 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 34 min |
| Aug 11, 2:42 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 63 min |
| Aug 11, 2:44 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 46 min |
| Aug 11, 2:59 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 76 min |
| Aug 11, 3:09 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 66 min |
| Aug 11, 3:16 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 59 min |
| Aug 11, 3:36 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Macomb, Saint Clair, Sanilac | 69 min |
| Aug 11, 3:47 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 43 min |
| Aug 11, 4:11 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 49 min |
| Aug 11, 4:54 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan | 51 min |
| Aug 11, 5:00 PM EDT | Severe Thunderstorm Warning | APX | Emmet | 18 min |
| Aug 11, 5:24 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Cheboygan, Emmet | 36 min |
| Aug 11, 5:30 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Leelanau | 45 min |
| Aug 11, 5:43 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet, Presque Isle | 47 min |
| Aug 11, 5:52 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Presque Isle | 38 min |
| Aug 11, 6:00 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Leelanau | 30 min |
| Aug 11, 6:09 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska, Otsego | 35 min |
| Aug 11, 6:24 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Leelanau | 51 min |
| Aug 11, 6:31 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Montmorency, Oscoda, Otsego | 44 min |
| Aug 11, 6:58 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Presque Isle | 47 min |
| Aug 11, 7:32 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 43 min |
| Aug 11, 8:19 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 72 min |
| Aug 11, 8:56 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kent | 49 min |
| Aug 11, 9:30 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Clinton, Eaton, Ionia | 45 min |
| Aug 12, 5:52 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 23 min |
| Aug 12, 6:12 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 33 min |
| Aug 12, 6:15 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 45 min |
| Aug 12, 6:31 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Livingston, Monroe, Washtenaw | 59 min |
| Aug 12, 7:09 AM EDT | Severe Thunderstorm Warning | DTX | Macomb, Monroe, Oakland, Wayne | 45 min |
| Aug 13, 4:07 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 68 min |
| Aug 24, 3:48 PM EDT | Severe Thunderstorm Warning | GRR | Mason, Oceana | 42 min |
| Aug 24, 4:43 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 49 min |
| Aug 24, 4:45 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 45 min |
| Aug 24, 4:53 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 40 min |
| Aug 24, 5:10 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Mecosta, Montcalm, Osceola | 50 min |
| Aug 24, 5:56 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 64 min |
| Aug 24, 6:06 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia, Montcalm | 84 min |
| Aug 24, 6:07 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 53 min |
| Aug 24, 6:20 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 25 min |
| Aug 24, 6:25 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 52 min |
| Aug 24, 6:47 PM EDT | Severe Thunderstorm Warning | APX | Arenac | 58 min |
| Aug 24, 6:47 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 28 min |
| Aug 24, 6:48 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Clinton, Eaton, Ingham, Ionia | 42 min |
| Aug 24, 6:52 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 53 min |
| Aug 24, 7:13 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 62 min |
| Aug 24, 7:30 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 45 min |
| Aug 24, 7:45 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 35 min |
| Aug 24, 8:02 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 30 min |
| Aug 24, 8:29 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 46 min |
| Aug 24, 8:30 PM EDT | Severe Thunderstorm Warning | IWX | Cass | 30 min |
| Aug 24, 8:37 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 42 min |
| Aug 24, 9:02 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass, Saint Joseph | 43 min |
| Aug 27, 7:36 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 39 min |
| Aug 27, 7:49 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 41 min |
| Aug 27, 8:12 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta, Newaygo | 48 min |
| Aug 28, 12:49 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee, Wexford | 56 min |
| Aug 28, 2:50 AM EDT | Severe Thunderstorm Warning | GRR | Lake, Osceola | 55 min |
| Aug 28, 3:35 AM EDT | Severe Thunderstorm Warning | GRR | Clare | 55 min |
| Aug 28, 3:42 AM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Missaukee, Ogemaw, Roscommon | 63 min |
| Aug 28, 4:15 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Kalkaska, Manistee, Missaukee, Wexford | 60 min |
| Aug 28, 2:07 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska | 38 min |
| Aug 28, 2:59 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Ogemaw, Oscoda, Roscommon | 46 min |
| Aug 28, 3:57 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 33 min |
| Aug 28, 4:01 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency | 49 min |
| Aug 28, 4:17 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco, Ogemaw, Oscoda | 43 min |
| Aug 28, 4:52 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco | 56 min |
| Aug 28, 5:05 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Iosco, Ogemaw | 55 min |
| Aug 28, 5:09 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 36 min |
| Aug 28, 5:51 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton | 39 min |
| Aug 28, 5:52 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 68 min |
| Aug 28, 5:57 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 48 min |
| Aug 28, 6:16 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 59 min |
| Aug 28, 6:22 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 38 min |
| Aug 28, 6:28 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 47 min |
| Aug 28, 6:43 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 47 min |
| Aug 28, 6:51 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Tuscola | 54 min |
| Aug 28, 7:02 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 58 min |
| Aug 28, 7:11 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 64 min |
| Aug 28, 7:12 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 13 min |
| Aug 28, 7:22 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 23 min |
| Aug 28, 7:33 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 42 min |
| Aug 28, 10:00 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 20 min |
| Aug 29, 2:16 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 44 min |
| Aug 29, 1:37 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Emmet, Grand Traverse, Leelanau | 38 min |
| Aug 29, 1:39 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 51 min |
| Aug 29, 1:58 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet | 47 min |
| Aug 29, 2:12 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee, Wexford | 48 min |
| Aug 29, 2:17 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Cheboygan, Emmet, Otsego | 43 min |
| Aug 29, 2:28 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Kalkaska, Otsego | 32 min |
| Aug 29, 2:55 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Montmorency, Otsego, Presque Isle | 35 min |
| Aug 29, 3:01 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Missaukee, Oscoda, Roscommon | 38 min |
| Aug 29, 3:18 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 28 min |
| Aug 29, 3:22 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency, Presque Isle | 53 min |
| Aug 29, 3:26 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Ionia, Kent | 28 min |
| Aug 29, 3:36 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw, Oscoda, Roscommon | 24 min |
| Aug 29, 4:04 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 56 min |
| Aug 29, 4:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 75 min |
| Aug 29, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 62 min |
| Aug 29, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Tuscola | 79 min |
| Aug 29, 5:21 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 24 min |
| Aug 29, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 65 min |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 64 min |
| Aug 29, 5:58 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 62 min |
| Aug 29, 6:00 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 59 min |
| Aug 29, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 77 min |
| Aug 29, 6:37 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 83 min |
| Aug 29, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 75 min |
| Aug 29, 7:00 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 57 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kalkaska County12
- Antrim County10
- Marquette County9
- Benzie County8
- Grand Traverse County8
- Cass County7
- Ontonagon County7
- Ionia County7
- Crawford County7
- Otsego County7
- Saginaw County7
- Oscoda County7
- Presque Isle County7
- Cheboygan County7
- Wexford County6
- Hillsdale County6
- Livingston County6
- Gogebic County6
- Houghton County6
- Berrien County6
- Leelanau County6
- Missaukee County6
- Clinton County6
- Gratiot County6
- Bay County6
- Ogemaw County6
- Emmet County6
- Branch County5
- Oakland County5
- Washtenaw County5
- Iron County5
- Baraga County5
- Charlevoix County5
- Barry County5
- Lake County5
- Roscommon County5
- Shiawassee County5
- Alcona County5
- Montmorency County5
- Huron County5
40 more counties
- Manistee County4
- Macomb County4
- Dickinson County4
- Allegan County4
- Kent County4
- Newaygo County4
- Calhoun County4
- Montcalm County4
- Saint Joseph County4
- Ingham County4
- Genesee County4
- Arenac County4
- Iosco County4
- Alpena County4
- Lenawee County4
- Monroe County4
- Wayne County3
- Saint Clair County3
- Alger County3
- Muskegon County3
- Ottawa County3
- Eaton County3
- Mecosta County3
- Osceola County3
- Clare County3
- Jackson County3
- Midland County3
- Tuscola County3
- Lapeer County3
- Sanilac County3
- Chippewa County3
- Mackinac County3
- Gladwin County3
- Delta County2
- Mason County2
- Oceana County2
- Kalamazoo County2
- Isabella County2
- Menominee County1
- Van Buren 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.