Alert archive / Michigan / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Michigan, 2013
328 severe thunderstorm warnings in 2013. 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 2013. Tap one for its archive.
- Severe Thunderstorm Warnings
- 328
- Busiest month
- July87 severe thunderstorm warnings
- Busiest day
- May 20, 201332 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.
192 of 328 severe thunderstorm warnings covering Michigan in 2013 had a qualifying storm report inside them; 424 of 569 hail, wind and damage reports fell inside a warning, on average 24 minutes after it went out.
Michigan, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 328 | 192 | 41% | 569 | 75% | 24 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: severe thunderstorm warnings | 124 | 82 | 34% | 324 | 77% | 20 min |
| NWS Grand Rapids, MI: severe thunderstorm warnings | 75 | 36 | 52% | 133 | 65% | 26 min |
| NWS Gaylord, MI: severe thunderstorm warnings | 52 | 29 | 44% | 77 | 73% | 23 min |
| NWS Marquette, MI: severe thunderstorm warnings | 55 | 21 | 62% | 45 | 71% | 18 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 66 | 36 | 45% | 125 | 72% | 19 min |
| NWS Detroit, MI: severe thunderstorm warnings | 121 | 87 | 28% | 271 | 79% | 26 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 |
|---|---|---|---|---|
| Jan 29, 2:37 AM EST | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 38 min |
| Apr 18, 10:01 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Muskegon, Ottawa | 59 min |
| Apr 18, 10:37 AM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 23 min |
| Apr 18, 10:52 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 53 min |
| Apr 18, 11:12 AM EDT | Severe Thunderstorm Warning | GRR | Ottawa | 48 min |
| Apr 18, 1:50 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Oakland | 40 min |
| Apr 18, 2:11 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Oakland | 49 min |
| Apr 18, 2:40 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 50 min |
| Apr 18, 2:42 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 48 min |
| Apr 18, 2:49 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 56 min |
| Apr 18, 2:54 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 51 min |
| Apr 18, 3:00 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 45 min |
| Apr 30, 8:07 AM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 23 min |
| May 20, 1:37 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Leelanau | 38 min |
| May 20, 1:50 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta | 40 min |
| May 20, 2:02 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 28 min |
| May 20, 2:15 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 45 min |
| May 20, 2:23 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee | 52 min |
| May 20, 2:24 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 51 min |
| May 20, 2:31 PM EDT | Severe Thunderstorm Warning | GRR | Mecosta | 44 min |
| May 20, 2:47 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Otsego | 58 min |
| May 20, 2:56 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 64 min |
| May 20, 3:18 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Cheboygan, Emmet, Otsego | 57 min |
| May 20, 3:19 PM EDT | Severe Thunderstorm Warning | APX | Gladwin, Roscommon | 41 min |
| May 20, 3:24 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 51 min |
| May 20, 3:41 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Montcalm | 64 min |
| May 20, 4:01 PM EDT | Severe Thunderstorm Warning | APX | Gladwin, Ogemaw, Roscommon | 59 min |
| May 20, 4:10 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Gratiot, Isabella | 65 min |
| May 20, 4:12 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 48 min |
| May 20, 4:37 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Iosco, Ogemaw | 53 min |
| May 20, 4:48 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 57 min |
| May 20, 4:54 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 66 min |
| May 20, 5:13 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 47 min |
| May 20, 5:16 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Saginaw | 59 min |
| May 20, 5:17 PM EDT | Severe Thunderstorm Warning | APX | Alpena | 43 min |
| May 20, 5:47 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 43 min |
| May 20, 5:48 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Tuscola | 57 min |
| May 20, 5:52 PM EDT | Severe Thunderstorm Warning | DTX | Shiawassee | 53 min |
| May 20, 6:07 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 38 min |
| May 20, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw | 77 min |
| May 20, 6:23 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 67 min |
| May 20, 6:41 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac | 79 min |
| May 20, 6:43 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Tuscola | 77 min |
| May 20, 6:53 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 67 min |
| May 20, 7:43 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 62 min |
| May 21, 5:48 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Tuscola | 42 min |
| May 21, 6:23 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac, Tuscola | 52 min |
| May 21, 7:00 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac | 60 min |
| May 22, 4:54 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe, Washtenaw, Wayne | 66 min |
| May 22, 5:27 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Macomb, Oakland | 63 min |
| May 22, 6:13 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 62 min |
| May 22, 7:31 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 59 min |
| May 28, 5:17 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham | 58 min |
| May 28, 5:47 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Eaton | 43 min |
| May 28, 6:14 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ionia | 46 min |
| May 28, 10:33 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 42 min |
| May 28, 10:54 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 66 min |
| May 28, 11:00 PM EDT | Severe Thunderstorm Warning | IWX | Cass | 45 min |
| May 28, 11:31 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 59 min |
| May 28, 11:59 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Kalamazoo | 61 min |
| May 29, 12:25 AM EDT | Severe Thunderstorm Warning | GRR | Eaton | 65 min |
| May 30, 2:07 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 38 min |
| May 30, 2:26 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 49 min |
| May 30, 2:36 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Gladwin, Ogemaw, Oscoda, Roscommon | 54 min |
| May 30, 2:50 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 70 min |
| May 30, 3:07 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 38 min |
| May 30, 3:15 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 75 min |
| May 30, 3:23 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Montmorency, Otsego | 52 min |
| May 30, 3:48 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 57 min |
| May 30, 4:13 PM EDT | Severe Thunderstorm Warning | APX | Arenac | 47 min |
| May 30, 4:17 PM EDT | Severe Thunderstorm Warning | APX | Gladwin | 58 min |
| May 30, 4:19 PM EDT | Severe Thunderstorm Warning | APX | Montmorency, Presque Isle | 56 min |
| May 30, 4:20 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Saginaw | 55 min |
| May 30, 5:10 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 50 min |
| May 30, 5:36 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Genesee, Saginaw, Tuscola | 69 min |
| May 30, 5:56 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 79 min |
| May 30, 6:02 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Marquette | 43 min |
| May 30, 6:18 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 42 min |
| May 30, 6:59 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 61 min |
| May 30, 7:29 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 76 min |
| May 30, 7:55 PM EDT | Severe Thunderstorm Warning | DTX | Bay | 80 min |
| May 30, 8:45 PM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee | 60 min |
| May 31, 12:52 PM EDT | Severe Thunderstorm Warning | DTX | Oakland, Washtenaw, Wayne | 68 min |
| May 31, 1:56 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair, Sanilac | 49 min |
| May 31, 4:40 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic | 50 min |
| May 31, 7:35 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 25 min |
| May 31, 7:59 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 46 min |
| May 31, 8:37 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 38 min |
| Jun 11, 6:03 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Iosco | 42 min |
| Jun 12, 8:49 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 41 min |
| Jun 12, 9:46 PM EDT | Severe Thunderstorm Warning | GRR | Ottawa | 59 min |
| Jun 12, 10:41 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 64 min |
| Jun 12, 10:45 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 60 min |
| Jun 12, 10:51 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 54 min |
| Jun 12, 11:11 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland, Washtenaw, Wayne | 64 min |
| Jun 12, 11:32 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Eaton | 58 min |
| Jun 16, 7:06 PM EDT | Severe Thunderstorm Warning | APX | Otsego | 24 min |
| Jun 16, 8:05 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Alpena, Montmorency, Oscoda | 40 min |
| Jun 17, 2:16 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 44 min |
| Jun 17, 2:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 75 min |
| Jun 17, 3:14 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 76 min |
| Jun 17, 3:53 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 67 min |
| Jun 17, 4:09 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 81 min |
| Jun 17, 4:56 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 49 min |
| Jun 17, 5:00 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 45 min |
| Jun 17, 6:18 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Oceana | 57 min |
| Jun 17, 6:27 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Saginaw, Tuscola | 63 min |
| Jun 17, 6:39 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 66 min |
| Jun 17, 7:02 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer | 43 min |
| Jun 17, 7:22 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 53 min |
| Jun 17, 7:33 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Muskegon, Newaygo | 57 min |
| Jun 17, 9:36 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 39 min |
| Jun 17, 10:01 PM EDT | Severe Thunderstorm Warning | IWX | Branch | 29 min |
| Jun 17, 10:28 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 47 min |
| Jun 24, 7:24 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 51 min |
| Jun 24, 7:38 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 67 min |
| Jun 24, 7:48 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 42 min |
| Jun 24, 8:07 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 53 min |
| Jun 24, 8:19 PM EDT | Severe Thunderstorm Warning | IWX | Berrien, Cass | 26 min |
| Jun 24, 8:43 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 47 min |
| Jun 25, 11:55 AM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 50 min |
| Jun 25, 5:32 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 43 min |
| Jun 25, 5:47 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 43 min |
| Jun 25, 6:00 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 60 min |
| Jun 25, 6:25 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Cass, Saint Joseph | 50 min |
| Jun 25, 6:49 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 41 min |
| Jun 25, 7:31 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 29 min |
| Jun 25, 7:47 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 73 min |
| Jun 25, 8:06 PM EDT | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 39 min |
| Jun 25, 8:11 PM EDT | Severe Thunderstorm Warning | IWX | Branch | 49 min |
| Jun 25, 8:40 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 50 min |
| Jun 25, 8:44 PM EDT | Severe Thunderstorm Warning | IWX | Hillsdale | 46 min |
| Jun 25, 8:53 PM EDT | Severe Thunderstorm Warning | IWX | Branch, Cass, Saint Joseph | 52 min |
| Jun 25, 10:31 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 29 min |
| Jun 26, 5:57 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 48 min |
| Jun 26, 7:14 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 61 min |
| Jun 27, 2:53 PM EDT | Severe Thunderstorm Warning | DTX | Huron, Sanilac, Tuscola | 97 min |
| Jun 27, 4:09 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 51 min |
| Jun 27, 4:33 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 57 min |
| Jun 27, 4:35 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 55 min |
| Jun 27, 5:10 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 50 min |
| Jun 27, 5:25 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 65 min |
| Jun 27, 6:08 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 52 min |
| Jun 27, 7:11 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 49 min |
| Jun 28, 12:06 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 54 min |
| Jun 28, 12:29 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 61 min |
| Jun 28, 12:53 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 52 min |
| Jun 28, 3:42 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 63 min |
| Jun 28, 3:52 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 38 min |
| Jul 7, 7:05 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 40 min |
| Jul 8, 2:26 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 49 min |
| Jul 9, 3:58 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 47 min |
| Jul 10, 1:14 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 61 min |
| Jul 10, 2:51 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 39 min |
| Jul 18, 12:33 PM EDT | Severe Thunderstorm Warning | APX | Montmorency | 42 min |
| Jul 18, 1:31 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 44 min |
| Jul 18, 1:35 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 40 min |
| Jul 18, 3:08 PM EDT | Severe Thunderstorm Warning | APX | Charlevoix, Cheboygan, Otsego | 52 min |
| Jul 18, 3:17 PM EDT | Severe Thunderstorm Warning | MQT | Keweenaw | 43 min |
| Jul 18, 5:32 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 43 min |
| Jul 18, 7:01 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 44 min |
| Jul 18, 7:14 PM EDT | Severe Thunderstorm Warning | MQT | Schoolcraft | 31 min |
| Jul 18, 7:33 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Luce, Schoolcraft | 42 min |
| Jul 18, 7:45 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 45 min |
| Jul 18, 8:00 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 60 min |
| Jul 18, 8:09 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Luce, Schoolcraft | 51 min |
| Jul 18, 9:55 PM EDT | Severe Thunderstorm Warning | APX | Chippewa | 35 min |
| Jul 18, 10:12 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 48 min |
| Jul 18, 10:31 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton | 44 min |
| Jul 18, 11:00 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 60 min |
| Jul 19, 5:16 AM EDT | Severe Thunderstorm Warning | MQT | Marquette | 14 min |
| Jul 19, 5:39 AM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Marquette | 51 min |
| Jul 19, 7:13 AM EDT | Severe Thunderstorm Warning | MQT | Delta, Schoolcraft | 62 min |
| Jul 19, 7:36 AM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 54 min |
| Jul 19, 10:28 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix, Cheboygan, Emmet, Otsego | 47 min |
| Jul 19, 10:57 AM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency, Presque Isle | 63 min |
| Jul 19, 11:28 AM EDT | Severe Thunderstorm Warning | APX | Alpena, Montmorency | 47 min |
| Jul 19, 12:46 PM EDT | Severe Thunderstorm Warning | MQT | Delta | 44 min |
| Jul 19, 12:56 PM EDT | Severe Thunderstorm Warning | MQT | Delta | 49 min |
| Jul 19, 2:18 PM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 57 min |
| Jul 19, 2:39 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 66 min |
| Jul 19, 2:53 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 67 min |
| Jul 19, 3:09 PM EDT | Severe Thunderstorm Warning | DTX | Sanilac | 66 min |
| Jul 19, 3:14 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw | 46 min |
| Jul 19, 3:50 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 40 min |
| Jul 19, 5:02 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 58 min |
| Jul 19, 5:14 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 61 min |
| Jul 19, 5:54 PM EDT | Severe Thunderstorm Warning | DTX | Macomb | 66 min |
| Jul 19, 6:29 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 61 min |
| Jul 19, 6:55 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 50 min |
| Jul 19, 7:37 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 53 min |
| Jul 19, 7:53 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Washtenaw, Wayne | 67 min |
| Jul 19, 8:03 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska, Missaukee, Roscommon | 42 min |
| Jul 19, 8:24 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 36 min |
| Jul 19, 8:27 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 48 min |
| Jul 19, 8:36 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 54 min |
| Jul 19, 8:40 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 65 min |
| Jul 19, 8:43 PM EDT | Severe Thunderstorm Warning | APX | Ogemaw, Roscommon | 47 min |
| Jul 19, 8:55 PM EDT | Severe Thunderstorm Warning | DTX | Monroe, Wayne | 80 min |
| Jul 19, 9:06 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 54 min |
| Jul 19, 9:20 PM EDT | Severe Thunderstorm Warning | APX | Arenac, Iosco | 40 min |
| Jul 19, 9:55 PM EDT | Severe Thunderstorm Warning | DTX | Midland | 50 min |
| Jul 19, 10:45 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 60 min |
| Jul 19, 10:47 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 58 min |
| Jul 19, 11:22 PM EDT | Severe Thunderstorm Warning | DTX | Livingston | 38 min |
| Jul 19, 11:26 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Ingham, Jackson | 64 min |
| Jul 19, 11:37 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 53 min |
| Jul 19, 11:37 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 23 min |
| Jul 19, 11:41 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 64 min |
| Jul 19, 11:55 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 65 min |
| Jul 20, 12:30 AM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 75 min |
| Jul 20, 1:00 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 75 min |
| Jul 20, 1:18 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 72 min |
| Jul 20, 1:20 AM EDT | Severe Thunderstorm Warning | GRR | Jackson | 40 min |
| Jul 20, 1:46 AM EDT | Severe Thunderstorm Warning | DTX | Monroe | 74 min |
| Jul 20, 2:13 AM EDT | Severe Thunderstorm Warning | IWX | Branch, Hillsdale | 32 min |
| Jul 21, 9:28 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kalamazoo | 62 min |
| Jul 21, 10:03 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry | 57 min |
| Jul 22, 8:36 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 39 min |
| Jul 22, 9:13 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 47 min |
| Jul 23, 1:50 PM EDT | Severe Thunderstorm Warning | DTX | Lapeer, Macomb, Oakland, Saint Clair | 40 min |
| Jul 23, 2:29 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 61 min |
| Jul 25, 3:39 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Houghton | 51 min |
| Jul 25, 4:21 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 39 min |
| Jul 25, 6:52 PM EDT | Severe Thunderstorm Warning | MQT | Ontonagon | 38 min |
| Jul 25, 7:21 PM EDT | Severe Thunderstorm Warning | MQT | Ontonagon | 39 min |
| Jul 25, 7:56 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic | 49 min |
| Jul 25, 8:30 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Ontonagon | 45 min |
| Jul 27, 4:18 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 42 min |
| Jul 27, 4:26 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 79 min |
| Jul 27, 6:23 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 52 min |
| Jul 31, 3:26 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 49 min |
| Jul 31, 5:04 PM EDT | Severe Thunderstorm Warning | APX | Mackinac | 41 min |
| Jul 31, 5:36 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 39 min |
| Jul 31, 5:44 PM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 61 min |
| Jul 31, 6:05 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 40 min |
| Aug 1, 6:25 PM EDT | Severe Thunderstorm Warning | DTX | Huron | 50 min |
| Aug 2, 1:29 PM EDT | Severe Thunderstorm Warning | APX | Iosco, Ogemaw | 61 min |
| Aug 7, 1:18 AM EDT | Severe Thunderstorm Warning | MQT | Menominee | 42 min |
| Aug 7, 2:39 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Manistee | 66 min |
| Aug 7, 2:51 AM EDT | Severe Thunderstorm Warning | GRR | Mason, Oceana | 54 min |
| Aug 7, 3:12 AM EDT | Severe Thunderstorm Warning | APX | Grand Traverse, Wexford | 48 min |
| Aug 7, 3:20 AM EDT | Severe Thunderstorm Warning | GRR | Lake, Mecosta | 55 min |
| Aug 7, 3:59 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska, Wexford | 46 min |
| Aug 7, 4:23 AM EDT | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee, Roscommon | 52 min |
| Aug 7, 4:56 AM EDT | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 64 min |
| Aug 7, 6:20 AM EDT | Severe Thunderstorm Warning | DTX | Genesee, Lapeer, Tuscola | 55 min |
| Aug 7, 8:16 AM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 59 min |
| Aug 7, 8:42 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo | 63 min |
| Aug 7, 10:30 AM EDT | Severe Thunderstorm Warning | DTX | Lenawee | 90 min |
| Aug 7, 1:20 PM EDT | Severe Thunderstorm Warning | IWX | Berrien | 40 min |
| Aug 12, 6:25 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 65 min |
| Aug 12, 7:31 PM EDT | Severe Thunderstorm Warning | DTX | Lenawee, Monroe | 59 min |
| Aug 12, 8:13 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 62 min |
| Aug 12, 8:52 PM EDT | Severe Thunderstorm Warning | DTX | Monroe | 83 min |
| Aug 21, 3:20 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 55 min |
| Aug 21, 4:08 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 52 min |
| Aug 21, 4:14 PM EDT | Severe Thunderstorm Warning | MQT | Ontonagon | 46 min |
| Aug 21, 4:20 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Iron | 55 min |
| Aug 21, 4:46 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Luce | 44 min |
| Aug 21, 4:49 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Schoolcraft | 56 min |
| Aug 21, 4:56 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic | 49 min |
| Aug 21, 4:59 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 46 min |
| Aug 21, 5:20 PM EDT | Severe Thunderstorm Warning | MQT | Iron | 55 min |
| Aug 21, 5:44 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Marquette, Schoolcraft | 61 min |
| Aug 21, 5:50 PM EDT | Severe Thunderstorm Warning | MQT | Iron | 55 min |
| Aug 21, 7:16 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 59 min |
| Aug 21, 9:42 PM EDT | Severe Thunderstorm Warning | APX | Leelanau | 48 min |
| Aug 25, 11:32 AM EDT | Severe Thunderstorm Warning | APX | Chippewa | 43 min |
| Aug 26, 2:52 AM EDT | Severe Thunderstorm Warning | MQT | Baraga, Marquette | 53 min |
| Aug 26, 4:43 AM EDT | Severe Thunderstorm Warning | APX | Chippewa, Mackinac | 62 min |
| Aug 27, 4:14 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 61 min |
| Aug 27, 4:53 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Osceola | 37 min |
| Aug 27, 7:30 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 45 min |
| Aug 29, 3:55 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic | 65 min |
| Aug 30, 9:01 AM EDT | Severe Thunderstorm Warning | APX | Leelanau | 29 min |
| Aug 30, 8:00 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 60 min |
| Aug 30, 10:40 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw, Wayne | 65 min |
| Sep 1, 4:53 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 52 min |
| Sep 1, 5:27 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Crawford, Kalkaska | 48 min |
| Sep 1, 11:47 PM EDT | Severe Thunderstorm Warning | DTX | Genesee, Livingston, Oakland | 43 min |
| Sep 6, 2:04 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Luce, Schoolcraft | 56 min |
| Sep 6, 2:57 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Luce, Schoolcraft | 48 min |
| Sep 9, 7:18 AM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kent, Ottawa | 57 min |
| Sep 9, 8:13 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 47 min |
| Sep 10, 9:19 PM EDT | Severe Thunderstorm Warning | APX | Antrim, Charlevoix | 41 min |
| Sep 11, 4:46 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 59 min |
| Sep 11, 5:12 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 63 min |
| Sep 11, 5:20 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 55 min |
| Sep 11, 5:27 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 63 min |
| Sep 11, 5:45 PM EDT | Severe Thunderstorm Warning | IWX | Branch | 45 min |
| Sep 11, 5:55 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Washtenaw | 65 min |
| Sep 11, 6:01 PM EDT | Severe Thunderstorm Warning | DTX | Macomb, Oakland | 89 min |
| Sep 11, 6:33 PM EDT | Severe Thunderstorm Warning | DTX | Saint Clair | 42 min |
| Sep 11, 6:53 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 82 min |
| Sep 20, 5:29 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Marquette | 46 min |
| Nov 17, 1:50 PM EST | Severe Thunderstorm Warning | GRR | Lake, Mason, Muskegon, Newaygo, Oceana | 55 min |
| Nov 17, 2:10 PM EST | Severe Thunderstorm Warning | GRR | Ottawa | 65 min |
| Nov 17, 2:24 PM EST | Severe Thunderstorm Warning | IWX | Berrien | 51 min |
| Nov 17, 2:28 PM EST | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 62 min |
| Nov 17, 2:45 PM EST | Severe Thunderstorm Warning | GRR | Lake, Mecosta, Muskegon, Newaygo, Osceola | 45 min |
| Nov 17, 2:50 PM EST | Severe Thunderstorm Warning | GRR | Kent | 55 min |
| Nov 17, 3:04 PM EST | Severe Thunderstorm Warning | GRR | Montcalm | 56 min |
| Nov 17, 3:23 PM EST | Severe Thunderstorm Warning | IWX | Cass, Saint Joseph | 37 min |
| Nov 17, 3:26 PM EST | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kalamazoo, Van Buren | 64 min |
| Nov 17, 3:29 PM EST | Severe Thunderstorm Warning | GRR | Clare, Isabella, Mecosta, Osceola | 61 min |
| Nov 17, 3:32 PM EST | Severe Thunderstorm Warning | GRR | Ionia | 58 min |
| Nov 17, 3:51 PM EST | Severe Thunderstorm Warning | IWX | Branch, Saint Joseph | 24 min |
| Nov 17, 3:52 PM EST | Severe Thunderstorm Warning | APX | Crawford, Kalkaska, Missaukee, Roscommon | 53 min |
| Nov 17, 3:54 PM EST | Severe Thunderstorm Warning | GRR | Gratiot, Montcalm | 66 min |
| Nov 17, 3:56 PM EST | Severe Thunderstorm Warning | DTX | Bay, Midland, Saginaw | 79 min |
| Nov 17, 3:57 PM EST | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 63 min |
| Nov 17, 4:02 PM EST | Severe Thunderstorm Warning | GRR | Clinton | 58 min |
| Nov 17, 4:04 PM EST | Severe Thunderstorm Warning | APX | Arenac, Gladwin, Ogemaw | 56 min |
| Nov 17, 4:09 PM EST | Severe Thunderstorm Warning | GRR | Calhoun, Ingham, Jackson | 66 min |
| Nov 17, 4:47 PM EST | Severe Thunderstorm Warning | DTX | Shiawassee | 43 min |
| Nov 17, 4:56 PM EST | Severe Thunderstorm Warning | APX | Arenac, Iosco, Ogemaw | 64 min |
| Nov 17, 4:56 PM EST | Severe Thunderstorm Warning | DTX | Livingston | 49 min |
| Nov 17, 5:02 PM EST | Severe Thunderstorm Warning | DTX | Genesee, Tuscola | 73 min |
| Nov 17, 5:08 PM EST | Severe Thunderstorm Warning | DTX | Lenawee, Washtenaw | 67 min |
| Nov 17, 5:13 PM EST | Severe Thunderstorm Warning | APX | Alcona, Alpena, Montmorency, Oscoda | 62 min |
| Nov 17, 5:20 PM EST | Severe Thunderstorm Warning | DTX | Monroe | 40 min |
| Nov 17, 5:31 PM EST | Severe Thunderstorm Warning | DTX | Wayne | 59 min |
| Nov 17, 5:31 PM EST | Severe Thunderstorm Warning | DTX | Lapeer | 74 min |
| Nov 17, 5:35 PM EST | Severe Thunderstorm Warning | DTX | Livingston, Oakland | 55 min |
| Nov 17, 5:49 PM EST | Severe Thunderstorm Warning | DTX | Macomb, Saint Clair | 71 min |
| Nov 17, 5:58 PM EST | Severe Thunderstorm Warning | DTX | Monroe | 32 min |
| Nov 17, 6:27 PM EST | Severe Thunderstorm Warning | DTX | Oakland | 63 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Oakland County24
- Marquette County21
- Washtenaw County19
- Alger County15
- Livingston County14
- Saint Clair County14
- Wayne County14
- Macomb County12
- Kalamazoo County12
- Saginaw County12
- Van Buren County11
- Monroe County11
- Tuscola County11
- Calhoun County11
- Cass County10
- Huron County10
- Schoolcraft County10
- Genesee County9
- Sanilac County9
- Kalkaska County9
- Baraga County9
- Jackson County9
- Saint Joseph County8
- Allegan County8
- Antrim County8
- Bay County8
- Lenawee County8
- Branch County8
- Ottawa County7
- Lapeer County7
- Roscommon County7
- Ogemaw County7
- Midland County7
- Eaton County7
- Barry County7
- Montmorency County7
- Hillsdale County7
- Berrien County6
- Grand Traverse County6
- Otsego County6
43 more counties
- Gladwin County6
- Kent County6
- Arenac County6
- Ingham County6
- Crawford County6
- Gogebic County6
- Iron County6
- Houghton County6
- Chippewa County6
- Muskegon County5
- Leelanau County5
- Mecosta County5
- Missaukee County5
- Newaygo County5
- Charlevoix County5
- Clare County5
- Iosco County5
- Alpena County5
- Luce County5
- Mackinac County5
- Delta County5
- Ontonagon County5
- Isabella County4
- Alcona County4
- Clinton County4
- Dickinson County4
- Keweenaw County4
- Cheboygan County3
- Ionia County3
- Montcalm County3
- Gratiot County3
- Shiawassee County3
- Oscoda County3
- Oceana County3
- Lake County3
- Osceola County3
- Emmet County2
- Presque Isle County2
- Menominee County2
- Benzie County2
- Mason County2
- Wexford County2
- Manistee County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20122014
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.