Alert archive / Michigan / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Michigan, 2019
253 severe thunderstorm warnings in 2019. 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 2019. Tap one for its archive.
- Severe Thunderstorm Warnings
- 253
- Busiest month
- July92 severe thunderstorm warnings
- Busiest day
- July 20, 201932 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.
143 of 253 severe thunderstorm warnings covering Michigan in 2019 had a qualifying storm report inside them; 296 of 421 hail, wind and damage reports fell inside a warning, on average 20 minutes after it went out.
Michigan, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 253 | 143 | 43% | 421 | 70% | 20 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: severe thunderstorm warnings | 164 | 74 | 55% | 293 | 70% | 23 min |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 72 | 37 | 49% | 146 | 68% | 23 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 71 | 42 | 41% | 166 | 81% | 29 min |
| NWS Detroit, MI: severe thunderstorm warnings | 84 | 59 | 30% | 162 | 73% | 19 min |
| NWS Gaylord, MI: severe thunderstorm warnings | 27 | 14 | 48% | 39 | 72% | 23 min |
| NWS Marquette, MI: severe thunderstorm warnings | 27 | 11 | 59% | 50 | 64% | 19 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 |
|---|---|---|---|---|
| Feb 24, 3:28 AM EST | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Ingham, Jackson | 62 min |
| Mar 14, 3:51 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 24 min |
| Mar 14, 3:55 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 35 min |
| Mar 14, 4:12 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 33 min |
| Mar 14, 4:16 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 44 min |
| Mar 14, 4:17 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 28 min |
| Mar 14, 4:23 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 22 min |
| Mar 14, 4:27 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 19 min |
| Mar 14, 4:31 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 29 min |
| Mar 14, 4:52 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 23 min |
| Mar 14, 4:53 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 25 min |
| Mar 14, 4:58 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass, Saint Joseph | 32 min |
| Mar 14, 5:08 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 37 min |
| Mar 14, 5:17 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent | 28 min |
| Mar 14, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 40 min |
| Mar 14, 6:11 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Eaton, Ingham | 34 min |
| Mar 14, 6:16 PM EDT | Severe Thunderstorm Warning | IWX | Branch | 29 min |
| Mar 14, 6:30 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 45 min |
| Mar 14, 6:36 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 39 min |
| Mar 14, 7:20 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 25 min |
| Mar 14, 7:34 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 41 min |
| Mar 14, 7:41 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 43 min |
| Mar 14, 7:46 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Macomb, Oakland | 74 min |
| Mar 14, 8:11 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 49 min |
| May 16, 9:53 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 16 min |
| May 19, 2:29 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 17 min |
| May 19, 2:36 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 35 min |
| May 19, 4:13 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 62 min |
| May 19, 4:32 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 43 min |
| May 19, 4:42 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 37 min |
| May 19, 4:48 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 27 min |
| May 19, 5:13 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Kalamazoo, Van Buren | 32 min |
| May 19, 5:14 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 46 min |
| May 19, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Ionia | 25 min |
| May 19, 6:32 PM EDT | Severe Thunderstorm Warning | IWX | Saint Joseph | 25 min |
| May 19, 6:41 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 32 min |
| May 19, 8:58 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 15 min |
| May 23, 5:19 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 41 min |
| May 23, 5:33 AM EDT | Severe Thunderstorm Warning | GRR | Jackson | 42 min |
| May 25, 1:11 AM EDT | Severe Thunderstorm Warning | GRR | Clinton | 51 min |
| May 25, 3:29 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Benzie, Grand Traverse, Kalkaska, Missaukee, Wexford | 46 min |
| May 25, 3:41 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Washtenaw, Wayne | 37 min |
| May 27, 4:46 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 44 min |
| May 27, 5:30 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 45 min |
| May 27, 6:50 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 40 min |
| May 31, 8:06 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Manistee, Wexford | 39 min |
| May 31, 8:46 PM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Wexford | 44 min |
| May 31, 9:06 PM EDT | Severe Thunderstorm Warning | APX | Missaukee | 54 min |
| May 31, 9:29 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mason | 46 min |
| May 31, 9:32 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Osceola | 43 min |
| May 31, 10:46 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 44 min |
| Jun 1, 12:31 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Eaton, Ingham, Ionia | 44 min |
| Jun 1, 12:49 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 41 min |
| Jun 1, 1:23 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Shiawassee | 52 min |
| Jun 1, 1:45 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 60 min |
| Jun 1, 1:50 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw, Wayne | 55 min |
| Jun 1, 2:13 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 47 min |
| Jun 1, 2:35 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 40 min |
| Jun 1, 2:43 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Macomb, Monroe, Oakland, Saint Clair, Sanilac and 1 more | 45 min |
| Jun 1, 5:06 PM EDT | Severe Thunderstorm Warning | IWX | Saint Joseph | 39 min |
| Jun 1, 6:29 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 46 min |
| Jun 1, 6:31 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 59 min |
| Jun 1, 7:09 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 66 min |
| Jun 1, 7:24 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 51 min |
| Jun 1, 7:39 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Ionia, Kent | 66 min |
| Jun 1, 7:39 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 66 min |
| Jun 1, 7:39 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 51 min |
| Jun 1, 8:14 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 51 min |
| Jun 1, 8:27 PM EDT | Severe Thunderstorm Warning | IWX | Saint Joseph | 33 min |
| Jun 1, 8:42 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Ingham, Jackson | 50 min |
| Jun 1, 8:58 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 32 min |
| Jun 1, 9:15 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 45 min |
| Jun 1, 9:30 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 30 min |
| Jun 25, 6:34 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 41 min |
| Jun 25, 6:49 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 41 min |
| Jun 25, 7:11 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 17 min |
| Jun 25, 7:24 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 51 min |
| Jun 25, 7:44 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 31 min |
| Jun 25, 8:07 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 38 min |
| Jun 28, 4:25 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 28 min |
| Jun 28, 4:31 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 28 min |
| Jun 28, 7:19 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Saint Clair, Sanilac | 56 min |
| Jul 2, 7:47 AM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Ottawa | 43 min |
| Jul 2, 11:56 AM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 49 min |
| Jul 2, 4:18 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Montcalm | 27 min |
| Jul 2, 4:30 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 30 min |
| Jul 2, 4:36 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 24 min |
| Jul 2, 4:56 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 32 min |
| Jul 2, 5:24 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 51 min |
| Jul 2, 5:34 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 30 min |
| Jul 2, 5:56 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Ottawa | 49 min |
| Jul 2, 6:14 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 20 min |
| Jul 2, 6:26 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 34 min |
| Jul 2, 6:27 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 63 min |
| Jul 2, 6:40 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Ottawa | 35 min |
| Jul 2, 6:42 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 24 min |
| Jul 2, 6:57 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 26 min |
| Jul 2, 7:09 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 51 min |
| Jul 2, 7:21 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 39 min |
| Jul 2, 7:31 PM EDT | Severe Thunderstorm Warning | DTX | Oakland, Wayne | 47 min |
| Jul 2, 7:57 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 33 min |
| Jul 4, 3:49 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 26 min |
| Jul 4, 6:33 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Iron | 27 min |
| Jul 10, 5:38 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 37 min |
| Jul 10, 8:19 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 41 min |
| Jul 10, 9:33 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 42 min |
| Jul 10, 10:14 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Montmorency, Otsego | 46 min |
| Jul 10, 11:42 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 32 min |
| Jul 12, 12:28 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 47 min |
| Jul 12, 1:06 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton, Iron | 39 min |
| Jul 12, 1:38 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 52 min |
| Jul 12, 4:35 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron, Marquette | 25 min |
| Jul 12, 4:57 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 33 min |
| Jul 15, 5:11 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 45 min |
| Jul 15, 6:17 PM EDT | Severe Thunderstorm Warning | DTX | Oakland, Washtenaw, Wayne | 16 min |
| Jul 15, 7:09 PM EDT | Severe Thunderstorm Warning | MQT | Keweenaw | 36 min |
| Jul 15, 7:40 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 50 min |
| Jul 15, 8:01 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton | 29 min |
| Jul 15, 8:29 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 31 min |
| Jul 18, 2:29 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 46 min |
| Jul 19, 7:04 AM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Kalkaska, Missaukee, Wexford | 41 min |
| Jul 19, 7:33 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Ogemaw, Oscoda, Roscommon | 42 min |
| Jul 19, 2:51 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 54 min |
| Jul 19, 3:17 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 43 min |
| Jul 19, 4:31 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 44 min |
| Jul 19, 6:58 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 77 min |
| Jul 19, 7:40 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 65 min |
| Jul 19, 11:40 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau, Manistee, Wexford | 80 min |
| Jul 19, 11:49 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 56 min |
| Jul 20, 12:15 AM EDT | Severe Thunderstorm Warning | GRR | Oceana | 60 min |
| Jul 20, 12:23 AM EDT | Severe Thunderstorm Warning | GRR | Lake | 46 min |
| Jul 20, 12:39 AM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 66 min |
| Jul 20, 12:48 AM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 57 min |
| Jul 20, 1:06 AM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee | 39 min |
| Jul 20, 1:24 AM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 51 min |
| Jul 20, 1:42 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 63 min |
| Jul 20, 1:45 AM EDT | Severe Thunderstorm Warning | GRR | Ionia | 60 min |
| Jul 20, 2:05 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Kalamazoo, Van Buren | 85 min |
| Jul 20, 2:56 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale, Saint Joseph | 49 min |
| Jul 20, 7:52 AM EDT | Severe Thunderstorm Warning | GRR | Lake, Osceola | 53 min |
| Jul 20, 10:58 AM EDT | Severe Thunderstorm Warning | GRR | Mecosta, Newaygo | 47 min |
| Jul 20, 11:43 AM EDT | Severe Thunderstorm Warning | APX | Manistee, Wexford | 24 min |
| Jul 20, 1:45 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 60 min |
| Jul 20, 1:52 PM EDT | Severe Thunderstorm Warning | APX | Manistee | 53 min |
| Jul 20, 2:07 PM EDT | Severe Thunderstorm Warning | GRR | Oceana | 53 min |
| Jul 20, 2:16 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 29 min |
| Jul 20, 2:33 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon | 57 min |
| Jul 20, 2:35 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 40 min |
| Jul 20, 2:46 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 59 min |
| Jul 20, 3:11 PM EDT | Severe Thunderstorm Warning | GRR | Ottawa | 49 min |
| Jul 20, 3:11 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Mecosta, Osceola | 64 min |
| Jul 20, 4:31 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco, Ogemaw | 44 min |
| Jul 20, 5:17 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Saginaw, Tuscola | 37 min |
| Jul 20, 5:31 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw, Shiawassee | 59 min |
| Jul 20, 5:49 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 41 min |
| Jul 20, 5:53 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Sanilac, Tuscola | 67 min |
| Jul 20, 5:57 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 45 min |
| Jul 20, 6:09 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Saint Clair, Sanilac | 28 min |
| Jul 20, 6:18 PM EDT | Severe Thunderstorm Warning | DTX | Oakland, Washtenaw, Wayne | 57 min |
| Jul 24, 5:27 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 33 min |
| Jul 27, 2:09 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw, Roscommon | 51 min |
| Jul 27, 2:48 PM EDT | Severe Thunderstorm Warning | APX | Iosco, Ogemaw | 57 min |
| Jul 28, 4:02 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 23 min |
| Jul 28, 5:33 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 21 min |
| Jul 28, 5:52 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 40 min |
| Jul 29, 1:35 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 27 min |
| Jul 29, 1:50 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 25 min |
| Jul 29, 2:02 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 28 min |
| Jul 29, 2:09 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 48 min |
| Jul 29, 2:13 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 62 min |
| Jul 29, 2:33 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 31 min |
| Jul 29, 2:38 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 42 min |
| Jul 29, 2:44 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 45 min |
| Jul 29, 2:56 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 32 min |
| Aug 2, 3:29 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 31 min |
| Aug 2, 6:53 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Marquette, Menominee | 37 min |
| Aug 3, 4:33 PM EDT | Severe Thunderstorm Warning | GRR | Isabella, Mecosta, Osceola | 42 min |
| Aug 5, 2:50 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 25 min |
| Aug 5, 4:38 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 37 min |
| Aug 5, 6:30 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 30 min |
| Aug 5, 8:11 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 19 min |
| Aug 7, 4:19 PM EDT | Severe Thunderstorm Warning | MQT | Schoolcraft | 26 min |
| Aug 14, 4:07 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 38 min |
| Aug 14, 4:38 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 52 min |
| Aug 14, 4:44 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 11 min |
| Aug 18, 10:25 AM EDT | Severe Thunderstorm Warning | GRR | Allegan | 17 min |
| Aug 18, 12:55 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Washtenaw, Wayne | 54 min |
| Aug 18, 1:49 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Sanilac | 56 min |
| Aug 18, 2:03 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 28 min |
| Aug 18, 7:12 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 63 min |
| Aug 18, 7:44 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 47 min |
| Aug 18, 8:13 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 62 min |
| Aug 18, 8:20 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 39 min |
| Aug 20, 8:59 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 46 min |
| Aug 27, 2:36 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton, Iron, Marquette | 24 min |
| Aug 27, 2:57 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 33 min |
| Aug 27, 3:23 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 22 min |
| Aug 27, 3:42 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 33 min |
| Aug 27, 6:26 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix | 64 min |
| Aug 29, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Newaygo | 25 min |
| Aug 29, 6:30 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm, Muskegon, Newaygo | 45 min |
| Aug 29, 7:16 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Montcalm | 44 min |
| Aug 29, 8:17 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 43 min |
| Aug 29, 9:14 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Shiawassee | 20 min |
| Aug 29, 9:25 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 35 min |
| Aug 29, 9:38 PM EDT | Severe Thunderstorm Warning | GRR | Barry | 37 min |
| Aug 29, 11:24 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 29 min |
| Sep 3, 4:49 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 26 min |
| Sep 3, 5:25 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix | 43 min |
| Sep 3, 8:08 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 37 min |
| Sep 3, 10:04 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 26 min |
| Sep 3, 10:08 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 67 min |
| Sep 3, 10:45 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 28 min |
| Sep 3, 10:59 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham | 7 min |
| Sep 10, 6:07 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella, Mecosta, Osceola | 53 min |
| Sep 10, 6:17 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 32 min |
| Sep 10, 6:32 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 58 min |
| Sep 10, 6:38 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 48 min |
| Sep 10, 7:00 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 14 min |
| Sep 10, 7:28 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland | 62 min |
| Sep 10, 7:53 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 67 min |
| Sep 11, 2:13 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Washtenaw, Wayne | 33 min |
| Sep 11, 3:10 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 35 min |
| Sep 11, 3:21 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Sanilac | 54 min |
| Sep 11, 3:56 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Oakland | 20 min |
| Sep 11, 5:41 PM EDT | Severe Thunderstorm Warning | GRR | Oceana | 49 min |
| Sep 11, 6:06 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 54 min |
| Sep 11, 6:59 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Kent, Montcalm | 61 min |
| Sep 11, 7:30 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 45 min |
| Sep 11, 7:48 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 40 min |
| Sep 11, 7:58 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 62 min |
| Sep 11, 9:50 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 22 min |
| Sep 12, 6:30 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 24 min |
| Sep 13, 2:57 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 35 min |
| Sep 13, 3:16 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 59 min |
| Sep 13, 3:51 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 39 min |
| Sep 21, 6:08 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer | 32 min |
| Sep 24, 8:48 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 42 min |
| Sep 24, 9:21 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton, Ontonagon | 39 min |
| Sep 24, 9:29 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 31 min |
| Sep 24, 10:18 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Gogebic, Houghton, Iron | 42 min |
| Sep 24, 10:54 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 51 min |
| Sep 27, 11:05 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 40 min |
| Sep 30, 3:20 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan, Emmet | 40 min |
| Sep 30, 3:27 PM EDT | Severe Thunderstorm Warning | APX | Emmet | 48 min |
| Sep 30, 3:47 PM EDT | Severe Thunderstorm Warning | APX | Cheboygan | 58 min |
| Sep 30, 4:19 PM EDT | Severe Thunderstorm Warning | APX | Presque Isle | 56 min |
| Oct 1, 12:26 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 52 min |
| Oct 1, 12:48 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 36 min |
| Oct 1, 1:02 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 43 min |
| Oct 1, 10:44 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 40 min |
| Oct 2, 12:03 AM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw, Shiawassee | 40 min |
| Nov 27, 11:00 AM EST | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 44 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Oakland County19
- Berrien County18
- Washtenaw County17
- Saint Joseph County15
- Livingston County14
- Cass County13
- Wayne County13
- Lapeer County12
- Marquette County12
- Hillsdale County11
- Baraga County11
- Branch County10
- Shiawassee County10
- Saint Clair County10
- Iron County9
- Allegan County8
- Ionia County8
- Genesee County8
- Sanilac County8
- Monroe County8
- Houghton County8
- Calhoun County7
- Eaton County7
- Jackson County7
- Kent County7
- Clinton County7
- Tuscola County7
- Macomb County7
- Saginaw County7
- Grand Traverse County7
- Ottawa County7
- Muskegon County7
- Ingham County6
- Lenawee County6
- Kalamazoo County6
- Wexford County6
- Montcalm County6
- Van Buren County5
- Osceola County5
- Dickinson County5
37 more counties
- Newaygo County5
- Barry County4
- Antrim County4
- Benzie County4
- Kalkaska County4
- Missaukee County4
- Manistee County4
- Lake County4
- Gogebic County4
- Ontonagon County4
- Ogemaw County4
- Leelanau County4
- Mecosta County4
- Alger County4
- Isabella County4
- Mason County3
- Clare County3
- Midland County3
- Keweenaw County3
- Oceana County3
- Bay County3
- Roscommon County2
- Alcona County2
- Iosco County2
- Menominee County2
- Gratiot County2
- Schoolcraft County2
- Presque Isle County2
- Charlevoix County2
- Cheboygan County2
- Emmet County2
- Montmorency County1
- Otsego County1
- Crawford County1
- Oscoda County1
- Delta County1
- Gladwin County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.