Alert archive / Michigan / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Michigan, 2023
297 severe thunderstorm warnings in 2023. 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 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 297
- Busiest month
- July126 severe thunderstorm warnings
- Busiest day
- June 25, 202339 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
164 of 297 severe thunderstorm warnings covering Michigan in 2023 had a qualifying storm report inside them; 398 of 490 hail, wind and damage reports fell inside a warning, on average 24 minutes after it went out.
Michigan, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 297 | 164 | 45% | 490 | 81% | 24 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: severe thunderstorm warnings | 52 | 29 | 44% | 90 | 63% | 20 min |
| NWS Northern Indiana: severe thunderstorm warnings | 125 | 68 | 46% | 348 | 58% | 24 min |
| NWS Detroit, MI: severe thunderstorm warnings | 110 | 70 | 36% | 212 | 90% | 27 min |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 82 | 51 | 38% | 164 | 83% | 22 min |
| NWS Marquette, MI: severe thunderstorm warnings | 34 | 16 | 53% | 54 | 63% | 22 min |
| NWS Gaylord, MI: severe thunderstorm warnings | 37 | 14 | 62% | 32 | 81% | 12 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 |
|---|---|---|---|---|
| Mar 31, 5:50 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 31 min |
| Mar 31, 6:05 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 29 min |
| Mar 31, 7:24 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 36 min |
| Mar 31, 7:33 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 19 min |
| Mar 31, 7:37 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 23 min |
| Mar 31, 7:51 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 39 min |
| Mar 31, 7:56 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 34 min |
| Mar 31, 8:02 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 43 min |
| Mar 31, 8:10 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 26 min |
| Mar 31, 8:30 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Calhoun, Kalamazoo | 45 min |
| Mar 31, 8:46 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 33 min |
| Mar 31, 8:54 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 21 min |
| Mar 31, 9:01 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 44 min |
| Mar 31, 10:00 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 45 min |
| Apr 1, 12:11 AM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 23 min |
| Apr 1, 12:50 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw | 39 min |
| Apr 1, 1:03 AM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 57 min |
| Apr 1, 10:51 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 39 min |
| Apr 1, 11:28 AM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 27 min |
| Apr 4, 5:48 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 57 min |
| Apr 4, 6:43 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 62 min |
| Apr 4, 7:31 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Eaton, Ionia | 42 min |
| Apr 4, 8:04 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Eaton, Ingham, Ionia | 34 min |
| Apr 5, 2:39 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Manistee | 36 min |
| Apr 5, 6:30 AM EDT | Severe Thunderstorm Warning | IWX | Berrien | 45 min |
| Apr 5, 7:18 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kalamazoo, Van Buren | 42 min |
| Apr 5, 8:31 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 39 min |
| Apr 5, 9:18 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Kalamazoo, Van Buren | 57 min |
| Apr 5, 9:54 AM EDT | Severe Thunderstorm Warning | GRR | Kent | 42 min |
| Apr 5, 9:58 AM EDT | Severe Thunderstorm Warning | GRR | Eaton | 47 min |
| Apr 5, 10:02 AM EDT | Severe Thunderstorm Warning | IWX | Berrien | 43 min |
| Apr 5, 10:14 AM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ingham | 61 min |
| Apr 5, 10:17 AM EDT | Severe Thunderstorm Warning | GRR | Ionia, Montcalm | 37 min |
| Apr 5, 10:26 AM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 36 min |
| Apr 5, 10:34 AM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 41 min |
| Apr 5, 10:36 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass, Saint Joseph | 54 min |
| Apr 5, 10:38 AM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 52 min |
| Apr 5, 10:54 AM EDT | Severe Thunderstorm Warning | GRR | Barry | 34 min |
| Apr 5, 11:12 AM EDT | Severe Thunderstorm Warning | GRR | Eaton | 46 min |
| Apr 5, 11:26 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 50 min |
| Apr 5, 11:37 AM EDT | Severe Thunderstorm Warning | GRR | Ingham | 53 min |
| Apr 5, 11:47 AM EDT | Severe Thunderstorm Warning | DTX | Livingston, Shiawassee | 42 min |
| Apr 5, 11:53 AM EDT | Severe Thunderstorm Warning | GRR | Jackson | 49 min |
| Apr 5, 12:26 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 34 min |
| Apr 20, 8:38 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kent, Mecosta, Montcalm, Muskegon and 3 more | 67 min |
| Apr 20, 8:56 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 49 min |
| May 7, 6:52 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 29 min |
| May 7, 7:20 AM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 19 min |
| May 31, 5:23 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 26 min |
| Jun 3, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 47 min |
| Jun 15, 4:13 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 32 min |
| Jun 15, 4:27 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 63 min |
| Jun 15, 4:52 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 53 min |
| Jun 15, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 65 min |
| Jun 15, 5:37 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 53 min |
| Jun 15, 6:12 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 18 min |
| Jun 15, 6:27 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 48 min |
| Jun 25, 2:49 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Otsego | 41 min |
| Jun 25, 2:59 PM EDT | Severe Thunderstorm Warning | IWX | Cass | 46 min |
| Jun 25, 3:29 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Otsego | 46 min |
| Jun 25, 3:33 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 42 min |
| Jun 25, 3:51 PM EDT | Severe Thunderstorm Warning | APX | Otsego | 39 min |
| Jun 25, 4:10 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Eaton, Kalamazoo | 51 min |
| Jun 25, 4:20 PM EDT | Severe Thunderstorm Warning | APX | Antrim | 16 min |
| Jun 25, 4:24 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 51 min |
| Jun 25, 4:36 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mecosta, Newaygo, Osceola | 54 min |
| Jun 25, 4:43 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Cheboygan, Otsego | 47 min |
| Jun 25, 4:47 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Montcalm | 43 min |
| Jun 25, 4:47 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 43 min |
| Jun 25, 4:49 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mason | 41 min |
| Jun 25, 4:51 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 69 min |
| Jun 25, 4:53 PM EDT | Severe Thunderstorm Warning | APX | Manistee, Wexford | 52 min |
| Jun 25, 4:53 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Clinton, Eaton, Ionia | 46 min |
| Jun 25, 4:55 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Iosco | 65 min |
| Jun 25, 5:03 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Ingham, Jackson | 57 min |
| Jun 25, 5:04 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 41 min |
| Jun 25, 5:08 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta | 54 min |
| Jun 25, 5:28 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 62 min |
| Jun 25, 5:32 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Otsego | 58 min |
| Jun 25, 5:32 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot, Isabella, Montcalm | 58 min |
| Jun 25, 5:34 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 41 min |
| Jun 25, 5:40 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 65 min |
| Jun 25, 5:54 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Wexford | 51 min |
| Jun 25, 6:03 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 57 min |
| Jun 25, 6:19 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 56 min |
| Jun 25, 6:21 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Leelanau | 24 min |
| Jun 25, 6:23 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Shiawassee | 67 min |
| Jun 25, 6:24 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 66 min |
| Jun 25, 6:29 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 46 min |
| Jun 25, 6:37 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 68 min |
| Jun 25, 6:40 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 65 min |
| Jun 25, 6:46 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Gladwin, Kalkaska, Missaukee, Ogemaw, Roscommon | 29 min |
| Jun 25, 6:48 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 27 min |
| Jun 25, 7:03 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 57 min |
| Jun 25, 7:24 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 42 min |
| Jun 25, 7:39 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Crawford, Otsego | 51 min |
| Jun 25, 8:43 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena | 47 min |
| Jun 29, 5:06 PM EDT | Severe Thunderstorm Warning | GRR | Osceola | 28 min |
| Jun 29, 5:16 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 44 min |
| Jun 29, 6:54 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm, Newaygo | 66 min |
| Jun 29, 6:57 PM EDT | Severe Thunderstorm Warning | APX | Missaukee, Roscommon | 22 min |
| Jun 29, 7:11 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 49 min |
| Jun 29, 7:26 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 34 min |
| Jun 30, 12:02 AM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent, Montcalm | 43 min |
| Jun 30, 9:34 AM EDT | Severe Thunderstorm Warning | APX | Chippewa | 41 min |
| Jun 30, 10:14 AM EDT | Severe Thunderstorm Warning | APX | Chippewa | 46 min |
| Jun 30, 1:54 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Presque Isle | 28 min |
| Jul 8, 1:57 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 29 min |
| Jul 8, 2:46 PM EDT | Severe Thunderstorm Warning | MQT | Delta | 29 min |
| Jul 10, 6:03 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron, Marquette | 42 min |
| Jul 10, 6:22 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Dickinson, Marquette | 53 min |
| Jul 10, 6:43 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Dickinson, Marquette | 62 min |
| Jul 10, 7:07 PM EDT | Severe Thunderstorm Warning | MQT | Iron | 23 min |
| Jul 10, 7:22 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 23 min |
| Jul 10, 7:28 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Schoolcraft | 62 min |
| Jul 10, 7:40 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 65 min |
| Jul 10, 7:43 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette | 32 min |
| Jul 10, 8:08 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Menominee | 52 min |
| Jul 10, 8:14 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Marquette | 46 min |
| Jul 10, 8:20 PM EDT | Severe Thunderstorm Warning | APX | Chippewa | 55 min |
| Jul 10, 8:30 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 45 min |
| Jul 10, 8:43 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 32 min |
| Jul 11, 2:18 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 41 min |
| Jul 11, 2:22 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 53 min |
| Jul 11, 3:14 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Sanilac | 61 min |
| Jul 11, 3:18 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 57 min |
| Jul 11, 3:40 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 65 min |
| Jul 11, 3:54 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 66 min |
| Jul 11, 4:02 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 43 min |
| Jul 11, 4:55 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 65 min |
| Jul 11, 5:18 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 72 min |
| Jul 12, 8:43 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 92 min |
| Jul 12, 8:45 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 60 min |
| Jul 12, 9:43 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 47 min |
| Jul 12, 9:59 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 69 min |
| Jul 12, 10:52 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Eaton | 53 min |
| Jul 12, 11:03 PM EDT | Severe Thunderstorm Warning | GRR | Ionia | 46 min |
| Jul 13, 12:04 AM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ingham | 41 min |
| Jul 14, 1:49 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac, Tuscola | 56 min |
| Jul 14, 2:24 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 66 min |
| Jul 14, 2:38 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer, Tuscola | 67 min |
| Jul 14, 2:44 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 61 min |
| Jul 14, 2:51 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 54 min |
| Jul 14, 2:57 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 63 min |
| Jul 14, 3:01 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 59 min |
| Jul 14, 3:27 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 63 min |
| Jul 14, 4:01 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 53 min |
| Jul 14, 4:07 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 53 min |
| Jul 14, 4:21 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 43 min |
| Jul 14, 4:45 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 60 min |
| Jul 14, 5:00 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 30 min |
| Jul 14, 5:12 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 61 min |
| Jul 14, 5:27 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 78 min |
| Jul 14, 9:25 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 42 min |
| Jul 15, 10:20 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson | 25 min |
| Jul 15, 10:47 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette, Menominee | 28 min |
| Jul 20, 9:36 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Leelanau, Manistee | 54 min |
| Jul 20, 11:56 AM EDT | Severe Thunderstorm Warning | GRR | Osceola | 49 min |
| Jul 20, 12:09 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta, Montcalm, Newaygo | 79 min |
| Jul 20, 12:18 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 57 min |
| Jul 20, 12:29 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 75 min |
| Jul 20, 12:49 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 56 min |
| Jul 20, 1:08 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 67 min |
| Jul 20, 1:31 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent | 44 min |
| Jul 20, 1:35 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 40 min |
| Jul 20, 1:44 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 64 min |
| Jul 20, 2:07 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 55 min |
| Jul 20, 2:08 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 52 min |
| Jul 20, 2:14 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 61 min |
| Jul 20, 2:14 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 31 min |
| Jul 20, 2:18 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 57 min |
| Jul 20, 2:27 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 46 min |
| Jul 20, 2:33 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 61 min |
| Jul 20, 2:38 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 82 min |
| Jul 20, 2:48 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 57 min |
| Jul 20, 2:48 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 30 min |
| Jul 20, 2:52 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 83 min |
| Jul 20, 2:57 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 73 min |
| Jul 20, 3:08 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Wayne | 85 min |
| Jul 20, 3:12 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 79 min |
| Jul 20, 3:13 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 23 min |
| Jul 20, 3:14 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 22 min |
| Jul 20, 3:16 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 11 min |
| Jul 20, 3:30 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 70 min |
| Jul 20, 3:43 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 77 min |
| Jul 22, 3:01 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse | 29 min |
| Jul 22, 3:46 PM EDT | Severe Thunderstorm Warning | APX | Wexford | 29 min |
| Jul 22, 4:10 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Dickinson, Menominee | 35 min |
| Jul 22, 6:32 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 41 min |
| Jul 23, 3:17 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 29 min |
| Jul 23, 4:22 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Presque Isle | 16 min |
| Jul 24, 2:41 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee | 34 min |
| Jul 24, 3:11 PM EDT | Severe Thunderstorm Warning | APX | Missaukee | 34 min |
| Jul 24, 5:40 PM EDT | Severe Thunderstorm Warning | APX | Alpena, Presque Isle | 35 min |
| Jul 26, 9:56 AM EDT | Severe Thunderstorm Warning | GRR | Mason, Oceana | 49 min |
| Jul 26, 12:20 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 40 min |
| Jul 26, 1:38 PM EDT | Severe Thunderstorm Warning | IWX | Branch | 37 min |
| Jul 26, 1:56 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 34 min |
| Jul 26, 2:18 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 72 min |
| Jul 26, 2:30 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 30 min |
| Jul 26, 2:31 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 44 min |
| Jul 26, 2:32 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 58 min |
| Jul 26, 2:43 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 60 min |
| Jul 26, 2:58 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 62 min |
| Jul 26, 3:05 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 55 min |
| Jul 26, 3:09 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 66 min |
| Jul 26, 3:28 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 62 min |
| Jul 26, 3:54 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 44 min |
| Jul 26, 4:06 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 39 min |
| Jul 26, 4:58 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 49 min |
| Jul 26, 5:34 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 41 min |
| Jul 26, 6:06 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 39 min |
| Jul 26, 6:11 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 34 min |
| Jul 26, 6:34 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 56 min |
| Jul 26, 6:38 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 22 min |
| Jul 26, 6:42 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 16 min |
| Jul 26, 6:45 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 45 min |
| Jul 26, 7:00 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 15 min |
| Jul 26, 7:57 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 48 min |
| Jul 27, 6:57 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 33 min |
| Jul 27, 7:16 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 29 min |
| Jul 27, 7:31 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 29 min |
| Jul 27, 7:58 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Iron, Ontonagon | 32 min |
| Jul 27, 8:00 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Iron, Marquette | 30 min |
| Jul 27, 8:22 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 38 min |
| Jul 27, 8:46 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 29 min |
| Jul 28, 6:15 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 30 min |
| Jul 28, 7:58 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Tuscola | 77 min |
| Jul 28, 8:44 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer | 61 min |
| Jul 29, 12:20 AM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 37 min |
| Jul 29, 12:53 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 55 min |
| Jul 29, 12:54 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 66 min |
| Jul 29, 1:25 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 40 min |
| Aug 2, 2:08 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 37 min |
| Aug 2, 3:57 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Marquette | 33 min |
| Aug 3, 5:28 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 47 min |
| Aug 3, 5:33 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 57 min |
| Aug 3, 5:48 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Kalkaska | 42 min |
| Aug 3, 6:08 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 52 min |
| Aug 3, 6:15 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac, Tuscola | 60 min |
| Aug 3, 6:37 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Roscommon | 27 min |
| Aug 3, 7:47 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Saint Clair, Sanilac | 45 min |
| Aug 9, 3:18 PM EDT | Severe Thunderstorm Warning | APX | Chippewa | 42 min |
| Aug 9, 6:08 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 52 min |
| Aug 11, 4:39 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta | 50 min |
| Aug 11, 6:42 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw, Shiawassee | 63 min |
| Aug 11, 7:30 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 75 min |
| Aug 11, 7:51 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Shiawassee | 69 min |
| Aug 11, 7:56 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 64 min |
| Aug 11, 8:45 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer, Oakland | 60 min |
| Aug 11, 9:08 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 49 min |
| Aug 11, 9:18 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 43 min |
| Aug 11, 9:18 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 41 min |
| Aug 11, 10:30 PM EDT | Severe Thunderstorm Warning | GRR | Oceana | 45 min |
| Aug 23, 8:54 AM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer, Tuscola | 66 min |
| Aug 23, 9:40 AM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 65 min |
| Aug 24, 1:47 AM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Washtenaw, Wayne | 58 min |
| Aug 24, 2:00 AM EDT | Severe Thunderstorm Warning | DTX | Livingston | 60 min |
| Aug 24, 2:17 AM EDT | Severe Thunderstorm Warning | DTX | Monroe, Washtenaw, Wayne | 58 min |
| Aug 24, 3:06 AM EDT | Severe Thunderstorm Warning | DTX | Oakland, Wayne | 54 min |
| Aug 24, 3:15 AM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 60 min |
| Aug 24, 3:26 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 64 min |
| Aug 24, 5:54 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 66 min |
| Aug 24, 6:21 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 39 min |
| Aug 24, 6:23 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 67 min |
| Aug 24, 7:40 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Montcalm, Newaygo | 65 min |
| Aug 24, 8:07 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 53 min |
| Aug 24, 8:26 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 48 min |
| Aug 24, 8:29 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 35 min |
| Aug 24, 8:38 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Montcalm | 36 min |
| Aug 24, 8:45 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 60 min |
| Aug 24, 8:51 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 54 min |
| Aug 24, 8:52 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Eaton | 38 min |
| Aug 24, 8:58 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 65 min |
| Aug 24, 9:01 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 28 min |
| Aug 24, 9:23 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer | 25 min |
| Aug 24, 9:25 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 50 min |
| Aug 24, 9:29 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Washtenaw | 76 min |
| Aug 24, 9:33 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 74 min |
| Aug 24, 9:33 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 57 min |
| Aug 24, 9:43 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 24 min |
| Aug 24, 9:50 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 69 min |
| Aug 24, 10:03 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 72 min |
| Aug 24, 10:18 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 31 min |
| Aug 25, 4:10 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette, Schoolcraft | 35 min |
| Aug 25, 4:16 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Dickinson, Menominee | 44 min |
| Aug 25, 4:32 PM EDT | Severe Thunderstorm Warning | MQT | Luce | 43 min |
| Aug 25, 4:47 PM EDT | Severe Thunderstorm Warning | MQT | Luce, Schoolcraft | 43 min |
| Aug 25, 4:54 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Menominee | 31 min |
| Aug 25, 5:38 PM EDT | Severe Thunderstorm Warning | APX | Chippewa | 18 min |
| Sep 5, 8:30 PM EDT | Severe Thunderstorm Warning | MQT | Keweenaw | 30 min |
| Sep 6, 8:03 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 27 min |
| Sep 6, 8:16 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 24 min |
| Oct 5, 4:12 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 33 min |
| Nov 6, 9:23 AM EST | Severe Thunderstorm Warning | GRR | Mecosta, Montcalm, Newaygo | 42 min |
| Nov 6, 9:45 AM EST | Severe Thunderstorm Warning | GRR | Gratiot, Isabella, Kent, Montcalm | 38 min |
| Nov 8, 6:07 PM EST | Severe Thunderstorm Warning | GRR | Isabella, Mecosta | 15 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County15
- Washtenaw County15
- Livingston County15
- Wayne County14
- Marquette County14
- Montcalm County13
- Cass County12
- Saint Joseph County12
- Hillsdale County12
- Genesee County12
- Saint Clair County12
- Lapeer County12
- Berrien County11
- Branch County11
- Lenawee County11
- Barry County11
- Eaton County11
- Oakland County11
- Dickinson County11
- Allegan County10
- Ingham County9
- Kent County9
- Shiawassee County9
- Delta County9
- Tuscola County9
- Calhoun County8
- Kalamazoo County8
- Ionia County8
- Macomb County8
- Sanilac County8
- Van Buren County7
- Jackson County7
- Clinton County7
- Saginaw County7
- Mecosta County7
- Newaygo County7
- Grand Traverse County7
- Alger County7
- Menominee County7
- Otsego County6
40 more counties
- Leelanau County6
- Chippewa County6
- Iron County6
- Crawford County5
- Kalkaska County5
- Schoolcraft County5
- Benzie County4
- Bay County4
- Gratiot County4
- Antrim County4
- Isabella County4
- Missaukee County4
- Ontonagon County4
- Manistee County3
- Midland County3
- Oceana County3
- Ottawa County3
- Lake County3
- Osceola County3
- Cheboygan County3
- Mason County3
- Wexford County3
- Roscommon County3
- Alpena County3
- Presque Isle County3
- Gogebic County3
- Charlevoix County2
- Gladwin County2
- Baraga County2
- Clare County2
- Huron County2
- Luce County2
- Muskegon County1
- Arenac County1
- Iosco County1
- Ogemaw County1
- Alcona County1
- Houghton County1
- Mackinac County1
- Keweenaw County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.