Alert archive / Michigan / Mesoscale Discussions / 2009
Mesoscale Discussions in Michigan, August 2009
7 mesoscale discussions in August 2009. 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 August 2009. Tap one for its archive.
- Mesoscale Discussions
- 7
- Busiest day
- August 20, 20093 mesoscale discussions
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 |
|---|---|---|---|---|
| Aug 9, 3:13 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Cheboygan, Crawford, Emmet and 12 more | 32 min |
| Aug 9, 5:18 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Bay, Branch, Calhoun, Cass and 33 more | 57 min |
| Aug 10, 12:42 AM EDT | Mesoscale Discussion | SPC | Barry, Clinton, Eaton, Ingham, Ionia, Kent and 2 more | 3 hr |
| Aug 11, 12:39 PM EDT | Mesoscale Discussion | SPC | Hillsdale, Lenawee, Monroe, Wayne | 2 hr |
| Aug 19, 9:18 PM EDT | Mesoscale Discussion | SPC | Barry, Calhoun, Clinton, Eaton, Genesee, Gratiot and 11 more | 57 min |
| Aug 20, 11:42 AM EDT | Mesoscale Discussion | SPC | Lenawee, Monroe, Washtenaw | 2 hr |
| Aug 20, 2:00 PM EDT | Mesoscale Discussion | SPC | Genesee, Lapeer, Livingston, Macomb, Oakland, Tuscola and 2 more | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County4
- Washtenaw County4
- Wayne County4
- Barry County3
- Clinton County3
- Eaton County3
- Genesee County3
- Ingham County3
- Ionia County3
- Kent County3
- Lenawee County3
- Livingston County3
- Oakland County3
- Shiawassee County3
- Calhoun County2
- Gratiot County2
- Hillsdale County2
- Jackson County2
- Lapeer County2
- Macomb County2
- Montcalm County2
- Ottawa County2
- Tuscola County2
- Alcona County1
- Alpena County1
- Antrim County1
- Cheboygan County1
- Crawford County1
- Emmet County1
- Grand Traverse County1
- Iosco County1
- Kalkaska County1
- Manistee County1
- Missaukee County1
- Montmorency County1
- Ogemaw County1
- Oscoda County1
- Otsego County1
- Presque Isle County1
- Roscommon County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.