Alert archive / Michigan / Mesoscale Discussions
Mesoscale Discussions in Michigan, 2011
116 mesoscale discussions in 2011. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Mesoscale Discussions
- 116
- Busiest month
- July25 mesoscale discussions
- Busiest day
- May 23, 20117 mesoscale discussions
Over time
By month
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 1, 4:36 PM EST | Mesoscale Discussion | SPC | Allegan, Berrien, Van Buren | 6 hr |
| Feb 1, 7:28 PM EST | Mesoscale Discussion | SPC | Allegan, Arenac, Barry, Bay, Branch, Calhoun and 45 more | 5 hr |
| Feb 2, 3:33 AM EST | Mesoscale Discussion | SPC | Alcona, Allegan, Alpena, Arenac, Barry, Bay and 33 more | 4 hr |
| Feb 20, 5:35 AM EST | Mesoscale Discussion | SPC | Berrien | 6 hr |
| Feb 20, 11:49 AM EST | Mesoscale Discussion | SPC | Allegan, Barry, Branch, Calhoun, Eaton, Hillsdale and 7 more | 4 hr |
| Feb 24, 10:41 PM EST | Mesoscale Discussion | SPC | Lenawee, Monroe | 6 hr |
| Feb 25, 2:46 AM EST | Mesoscale Discussion | SPC | Monroe | 4 hr |
| Feb 28, 12:04 AM EST | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Calhoun, Clinton, Eaton and 18 more | 6 hr |
| Mar 4, 5:36 AM EST | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 24 more | 4 hr |
| Mar 22, 4:49 PM EDT | Mesoscale Discussion | SPC | Delta, Dickinson, Gogebic, Iron, Menominee | 5 hr |
| Mar 22, 9:57 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Benzie and 40 more | 5 hr |
| Apr 3, 10:31 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Calhoun, Cass, Clare, Clinton and 20 more | 89 min |
| Apr 4, 2:53 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Calhoun, Cass, Clare and 19 more | 97 min |
| Apr 10, 5:51 PM EDT | Mesoscale Discussion | SPC | Antrim, Arenac, Benzie, Crawford, Gladwin, Grand Traverse and 7 more | 84 min |
| Apr 10, 7:02 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 6 more | 88 min |
| Apr 10, 9:55 PM EDT | Mesoscale Discussion | SPC | Alger, Alpena, Antrim, Benzie, Charlevoix, Cheboygan and 26 more | 95 min |
| Apr 11, 12:03 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Calhoun, Cass, Clinton and 12 more | 87 min |
| Apr 11, 1:48 AM EDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Lenawee, Saint Joseph | 87 min |
| Apr 19, 5:52 PM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Cheboygan, Crawford, Delta and 12 more | 4 hr |
| Apr 26, 1:26 PM EDT | Mesoscale Discussion | SPC | Barry, Branch, Calhoun, Cass, Clinton, Eaton and 13 more | 94 min |
| Apr 26, 4:53 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 7 more | 67 min |
| Apr 26, 8:33 PM EDT | Mesoscale Discussion | SPC | Arenac, Barry, Bay, Branch, Calhoun, Clare and 31 more | 57 min |
| Apr 28, 12:51 AM EDT | Mesoscale Discussion | SPC | Lenawee, Monroe, Oakland, Washtenaw, Wayne | 54 min |
| May 11, 4:19 AM EDT | Mesoscale Discussion | SPC | Delta, Dickinson, Iron, Marquette, Menominee | 56 min |
| May 11, 2:16 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Benzie, Clare, Crawford, Gladwin and 14 more | 119 min |
| May 11, 6:40 PM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Cass, Saint Joseph, Van Buren | 65 min |
| May 11, 11:00 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Branch, Calhoun, Cass, Eaton and 4 more | 60 min |
| May 22, 3:15 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Arenac, Bay, Clinton, Genesee and 25 more | 60 min |
| May 22, 5:16 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 9 more | 119 min |
| May 22, 8:09 PM EDT | Mesoscale Discussion | SPC | Antrim, Crawford, Grand Traverse, Kalkaska, Lake, Missaukee and 3 more | 96 min |
| May 22, 8:20 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 17 more | 115 min |
| May 22, 8:42 PM EDT | Mesoscale Discussion | SPC | Dickinson, Iron | 63 min |
| May 22, 10:59 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 5 more | 61 min |
| May 23, 8:25 AM EDT | Mesoscale Discussion | SPC | Lenawee, Monroe, Washtenaw, Wayne | 65 min |
| May 23, 12:35 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Branch, Calhoun, Clinton, Eaton and 21 more | 85 min |
| May 23, 6:40 PM EDT | Mesoscale Discussion | SPC | Hillsdale, Jackson, Lenawee, Livingston, Macomb, Monroe and 4 more | 65 min |
| May 25, 1:26 PM EDT | Mesoscale Discussion | SPC | Hillsdale, Lenawee, Monroe | 94 min |
| May 25, 4:45 PM EDT | Mesoscale Discussion | SPC | Monroe | 60 min |
| May 26, 2:37 AM EDT | Mesoscale Discussion | SPC | Monroe | 83 min |
| May 29, 9:39 AM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Cass, Van Buren | 66 min |
| May 29, 12:59 PM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Branch, Calhoun, Cass, Eaton and 11 more | 61 min |
| May 29, 4:17 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Eaton, Hillsdale, Ingham, Jackson and 11 more | 88 min |
| May 29, 6:51 PM EDT | Mesoscale Discussion | SPC | Genesee, Lapeer, Lenawee, Livingston, Macomb, Monroe and 8 more | 54 min |
| May 30, 3:10 PM EDT | Mesoscale Discussion | SPC | Baraga, Dickinson, Gogebic, Iron, Ontonagon | 95 min |
| May 31, 1:00 PM EDT | Mesoscale Discussion | SPC | Alger, Alpena, Antrim, Baraga, Benzie, Charlevoix and 35 more | 3 hr |
| May 31, 1:59 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 10 more | 3 hr |
| May 31, 7:26 PM EDT | Mesoscale Discussion | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 62 more | 2 hr |
| Jun 3, 4:33 PM EDT | Mesoscale Discussion | SPC | Iron | 87 min |
| Jun 3, 10:07 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Chippewa, Delta, Dickinson, Houghton and 8 more | 83 min |
| Jun 6, 3:02 PM EDT | Mesoscale Discussion | SPC | Alger, Antrim, Baraga, Benzie, Charlevoix, Cheboygan and 10 more | 118 min |
| Jun 7, 2:32 AM EDT | Mesoscale Discussion | SPC | Baraga, Delta, Dickinson, Gogebic, Iron, Menominee and 1 more | 2 hr |
| Jun 8, 12:08 PM EDT | Mesoscale Discussion | SPC | Alcona, Allegan, Alpena, Antrim, Arenac, Barry and 42 more | 97 min |
| Jun 8, 2:49 PM EDT | Mesoscale Discussion | SPC | Charlevoix, Delta, Dickinson, Menominee, Schoolcraft | 86 min |
| Jun 8, 9:43 PM EDT | Mesoscale Discussion | SPC | Allegan, Kent, Lake, Manistee, Mason, Muskegon and 3 more | 92 min |
| Jun 9, 12:45 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 19 more | 90 min |
| Jun 21, 4:47 PM EDT | Mesoscale Discussion | SPC | Allegan, Arenac, Barry, Bay, Branch, Calhoun and 37 more | 88 min |
| Jun 21, 5:56 PM EDT | Mesoscale Discussion | SPC | Berrien | 94 min |
| Jun 21, 7:55 PM EDT | Mesoscale Discussion | SPC | Bay, Clinton, Genesee, Gratiot, Ingham, Ionia and 8 more | 95 min |
| Jun 22, 11:46 AM EDT | Mesoscale Discussion | SPC | Arenac, Barry, Bay, Branch, Calhoun, Clare and 32 more | 119 min |
| Jun 22, 4:35 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Genesee, Gladwin, Huron, Jackson and 14 more | 55 min |
| Jun 27, 4:44 PM EDT | Mesoscale Discussion | SPC | Dickinson, Gogebic, Iron, Ontonagon | 91 min |
| Jul 1, 11:04 PM EDT | Mesoscale Discussion | SPC | Baraga, Dickinson, Gogebic, Houghton, Iron, Marquette and 1 more | 116 min |
| Jul 2, 12:38 AM EDT | Mesoscale Discussion | SPC | Baraga, Dickinson, Gogebic, Houghton, Iron, Marquette and 1 more | 97 min |
| Jul 2, 2:06 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Berrien, Branch, Calhoun and 32 more | 54 min |
| Jul 2, 7:17 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Cass, Eaton, Genesee, Hillsdale and 16 more | 58 min |
| Jul 5, 1:29 PM EDT | Mesoscale Discussion | SPC | Delta, Dickinson, Menominee | 91 min |
| Jul 11, 6:07 AM EDT | Mesoscale Discussion | SPC | Lake, Manistee, Mason, Muskegon, Newaygo, Oceana and 1 more | 113 min |
| Jul 11, 8:10 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Berrien, Branch, Calhoun and 35 more | 95 min |
| Jul 11, 8:50 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 13 more | 55 min |
| Jul 11, 10:55 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Branch, Calhoun, Cass, Clinton and 14 more | 65 min |
| Jul 11, 12:34 PM EDT | Mesoscale Discussion | SPC | Lenawee, Macomb, Monroe, Oakland, Washtenaw, Wayne | 56 min |
| Jul 17, 7:11 PM EDT | Mesoscale Discussion | SPC | Gogebic, Iron | 64 min |
| Jul 17, 10:24 PM EDT | Mesoscale Discussion | SPC | Menominee | 66 min |
| Jul 18, 12:06 AM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Charlevoix, Cheboygan, Crawford, Emmet and 13 more | 54 min |
| Jul 18, 10:54 AM EDT | Mesoscale Discussion | SPC | Lake, Manistee, Mason, Mecosta, Muskegon, Newaygo and 1 more | 96 min |
| Jul 18, 1:29 PM EDT | Mesoscale Discussion | SPC | Bay, Clare, Clinton, Eaton, Genesee, Gladwin and 18 more | 91 min |
| Jul 20, 7:55 PM EDT | Mesoscale Discussion | SPC | Gogebic, Houghton, Keweenaw, Ontonagon | 95 min |
| Jul 21, 4:19 PM EDT | Mesoscale Discussion | SPC | Berrien, Cass | 86 min |
| Jul 22, 11:20 AM EDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Jackson, Lenawee, Monroe | 55 min |
| Jul 22, 12:50 PM EDT | Mesoscale Discussion | SPC | Hillsdale | 55 min |
| Jul 24, 7:27 PM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Clare, Crawford, Gladwin, Gratiot and 11 more | 93 min |
| Jul 28, 1:36 AM EDT | Mesoscale Discussion | SPC | Berrien | 84 min |
| Jul 29, 12:51 AM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 10 more | 84 min |
| Jul 29, 3:31 AM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Cass, Hillsdale, Jackson, Kalamazoo and 6 more | 89 min |
| Jul 30, 12:28 PM EDT | Mesoscale Discussion | SPC | Gogebic, Iron | 3 hr |
| Jul 30, 3:56 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Benzie, Delta, Dickinson, Iron and 8 more | 2 hr |
| Aug 1, 3:47 AM EDT | Mesoscale Discussion | SPC | Bay, Clinton, Genesee, Gladwin, Gratiot, Ingham and 12 more | 58 min |
| Aug 1, 8:01 AM EDT | Mesoscale Discussion | SPC | Monroe | 89 min |
| Aug 1, 1:06 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Eaton, Hillsdale, Jackson, Lenawee and 2 more | 24 min |
| Aug 2, 2:25 PM EDT | Mesoscale Discussion | SPC | Allegan, Arenac, Barry, Bay, Benzie, Branch and 41 more | 95 min |
| Aug 2, 9:34 PM EDT | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 2 more | 86 min |
| Aug 3, 12:25 AM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Cass, Kalamazoo, Saint Joseph | 95 min |
| Aug 7, 12:14 PM EDT | Mesoscale Discussion | SPC | Branch, Cass, Hillsdale, Saint Joseph | 2 hr |
| Aug 13, 12:45 PM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Branch, Cass, Kalamazoo, Saint Joseph and 1 more | 60 min |
| Aug 13, 4:29 PM EDT | Mesoscale Discussion | SPC | Branch, Hillsdale, Jackson, Lenawee, Livingston, Saint Joseph | 91 min |
| Aug 13, 7:10 PM EDT | Mesoscale Discussion | SPC | Lenawee, Livingston, Macomb, Monroe, Oakland, Saint Clair and 2 more | 95 min |
| Aug 17, 3:49 PM EDT | Mesoscale Discussion | SPC | Chippewa, Mackinac | 56 min |
| Aug 20, 12:04 PM EDT | Mesoscale Discussion | SPC | Barry, Berrien, Branch, Calhoun, Cass, Clinton and 21 more | 116 min |
| Aug 20, 4:37 PM EDT | Mesoscale Discussion | SPC | Macomb, Saint Clair, Wayne | 83 min |
| Aug 24, 4:46 PM EDT | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Eaton, Hillsdale and 11 more | 89 min |
| Aug 24, 8:25 PM EDT | Mesoscale Discussion | SPC | Alcona, Allegan, Alpena, Arenac, Barry, Bay and 37 more | 95 min |
| Sep 2, 11:08 AM EDT | Mesoscale Discussion | SPC | Antrim, Benzie, Grand Traverse, Kalkaska, Lake, Leelanau and 6 more | 97 min |
| Sep 3, 6:53 AM EDT | Mesoscale Discussion | SPC | Clinton, Genesee, Gratiot, Ionia, Isabella, Kent and 5 more | 97 min |
| Sep 3, 10:45 AM EDT | Mesoscale Discussion | SPC | Arenac, Bay, Huron, Sanilac, Tuscola | 60 min |
| Sep 3, 1:24 PM EDT | Mesoscale Discussion | SPC | Allegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren | 66 min |
| Sep 3, 6:02 PM EDT | Mesoscale Discussion | SPC | Berrien, Branch, Calhoun, Cass, Eaton, Genesee and 16 more | 58 min |
| Sep 3, 8:29 PM EDT | Mesoscale Discussion | SPC | Branch, Calhoun, Genesee, Hillsdale, Ingham, Jackson and 12 more | 61 min |
| Sep 12, 2:15 PM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Iron, Keweenaw, Ontonagon | 2 hr |
| Sep 12, 6:31 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 5 more | 119 min |
| Sep 12, 11:06 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Iron, Luce and 4 more | 54 min |
| Sep 29, 6:21 PM EDT | Mesoscale Discussion | SPC | Barry, Clinton, Eaton, Genesee, Gratiot, Ingham and 13 more | 84 min |
| Nov 9, 11:50 AM EST | Mesoscale Discussion | SPC | Delta, Dickinson, Iron, Menominee | 4 hr |
| Nov 19, 2:05 PM EST | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 4 more | 4 hr |
| Nov 29, 12:02 PM EST | Mesoscale Discussion | SPC | Branch, Calhoun, Cass, Hillsdale, Saint Joseph | 4 hr |
| Nov 29, 3:12 PM EST | Mesoscale Discussion | SPC | Barry, Bay, Branch, Calhoun, Cass, Clinton and 20 more | 4 hr |
| Nov 29, 8:55 PM EST | Mesoscale Discussion | SPC | Arenac, Bay, Branch, Calhoun, Clinton, Eaton and 11 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lenawee County42
- Branch County40
- Calhoun County40
- Saint Joseph County40
- Hillsdale County39
- Kalamazoo County39
- Washtenaw County39
- Eaton County38
- Jackson County38
- Cass County37
- Livingston County37
- Ingham County36
- Monroe County36
- Clinton County32
- Oakland County32
- Shiawassee County32
- Allegan County31
- Barry County30
- Ionia County30
- Wayne County30
- Berrien County28
- Genesee County28
- Kent County28
- Van Buren County27
- Gratiot County27
- Macomb County27
- Tuscola County27
- Lapeer County26
- Saginaw County26
- Bay County25
- Midland County24
- Isabella County23
- Mecosta County21
- Montcalm County21
- Saint Clair County21
- Iron County21
- Gladwin County20
- Newaygo County20
- Sanilac County20
- Dickinson County20
43 more counties
- Arenac County19
- Oceana County19
- Clare County18
- Huron County17
- Lake County17
- Manistee County17
- Mason County17
- Missaukee County17
- Osceola County17
- Ottawa County17
- Muskegon County16
- Delta County16
- Roscommon County15
- Wexford County15
- Menominee County15
- Ogemaw County14
- Benzie County14
- Gogebic County14
- Crawford County13
- Grand Traverse County13
- Kalkaska County13
- Baraga County13
- Oscoda County12
- Antrim County12
- Marquette County12
- Ontonagon County12
- Otsego County11
- Iosco County10
- Montmorency County10
- Alpena County9
- Leelanau County9
- Alger County9
- Houghton County9
- Schoolcraft County9
- Charlevoix County8
- Alcona County7
- Presque Isle County7
- Cheboygan County7
- Emmet County7
- Keweenaw County6
- Chippewa County5
- Mackinac County5
- Luce County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.