Alert archive / Michigan / Severe Thunderstorm Watches / 2011
Severe Thunderstorm Watches in Michigan, September 2011
4 severe thunderstorm watches in September 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in September 2011. Tap one for its archive.
- Severe Thunderstorm Watches
- 4
- Busiest day
- September 3, 20112 severe thunderstorm watches
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 12:09 PM EDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 18 more | 3 hr |
| Sep 3, 7:22 AM EDT | Severe Thunderstorm Watch | SPC | Allegan, Barry, Bay, Clinton, Eaton, Genesee and 19 more | 5 hr |
| Sep 3, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Branch, Calhoun, Cass, Eaton, Genesee and 17 more | 7 hr |
| Sep 12, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 7 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Eaton County2
- Genesee County2
- Ingham County2
- Lapeer County2
- Saint Clair County2
- Sanilac County2
- Shiawassee County2
- Alcona County1
- Alpena County1
- Antrim County1
- Arenac County1
- Benzie County1
- Charlevoix County1
- Clare County1
- Crawford County1
- Gladwin County1
- Grand Traverse County1
- Iosco County1
- Kalkaska County1
- Lake County1
- Leelanau County1
- Manistee County1
- Mason County1
- Missaukee County1
- Montmorency County1
- Ogemaw County1
- Osceola County1
- Oscoda County1
- Otsego County1
- Roscommon County1
- Wexford County1
- Allegan County1
- Barry County1
- Bay County1
- Clinton County1
- Gratiot County1
- Huron County1
- Ionia County1
- Isabella County1
- Kent County1
38 more counties
- Mecosta County1
- Midland County1
- Montcalm County1
- Muskegon County1
- Newaygo County1
- Oceana County1
- Ottawa County1
- Saginaw County1
- Tuscola County1
- Berrien County1
- Branch County1
- Calhoun County1
- Cass County1
- Hillsdale County1
- Jackson County1
- Kalamazoo County1
- Lenawee County1
- Livingston County1
- Macomb County1
- Monroe County1
- Oakland County1
- Saint Joseph County1
- Van Buren County1
- Washtenaw County1
- Wayne County1
- Alger County1
- Baraga County1
- Delta County1
- Dickinson County1
- Gogebic County1
- Houghton County1
- Iron County1
- Keweenaw County1
- Luce County1
- Marquette County1
- Menominee County1
- Ontonagon County1
- Schoolcraft County1
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.