Alert archive / Michigan / Mesoscale Discussions / 2009
Mesoscale Discussions in Michigan, May 2009
2 mesoscale discussions in May 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 May 2009. Tap one for its archive.
- Mesoscale Discussions
- 2
- Busiest day
- May 14, 20091 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 |
|---|---|---|---|---|
| May 13, 11:17 PM EDT | Mesoscale Discussion | SPC | Allegan, Barry, Berrien, Branch, Calhoun, Cass and 9 more | 58 min |
| May 30, 12:28 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Barry, Bay and 35 more | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Barry County2
- Ionia County2
- Kent County2
- Mecosta County2
- Montcalm County2
- Newaygo County2
- Allegan County1
- Berrien County1
- Branch County1
- Calhoun County1
- Cass County1
- Kalamazoo County1
- Ottawa County1
- Saint Joseph County1
- Van Buren County1
- Alcona County1
- Alpena County1
- Antrim County1
- Arenac County1
- Bay County1
- Cheboygan County1
- Clare County1
- Clinton County1
- Crawford County1
- Genesee County1
- Gladwin County1
- Grand Traverse County1
- Gratiot County1
- Huron County1
- Iosco County1
- Isabella County1
- Kalkaska County1
- Lake County1
- Lapeer County1
- Manistee County1
- Mason County1
- Midland County1
- Missaukee County1
- Montmorency County1
- Ogemaw 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.