Excessive Heat Warnings in Michigan
20 excessive heat warnings since 1986. 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 excessive heat warnings reaches back to 2005.
Excessive Heat Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Excessive Heat Warnings
- 20
- Busiest year
- 20124 excessive heat warnings
- Average year
- 3over 8 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Macomb County8
- Oakland County8
- Wayne County8
- Cass County7
- Genesee County7
- Lenawee County7
- Livingston County7
- Monroe County7
- Washtenaw County7
- Branch County6
- Hillsdale County6
- Lapeer County6
- Saint Clair County6
- Saint Joseph County6
- Shiawassee County6
- Bay County5
- Midland County5
- Saginaw County5
- Allegan County4
- Barry County4
- Calhoun County4
- Clinton County4
- Eaton County4
- Ingham County4
- Ionia County4
- Jackson County4
- Kalamazoo County4
- Kent County4
- Ottawa County4
- Sanilac County4
- Tuscola County4
- Van Buren County4
- Gratiot County3
- Huron County3
- Montcalm County3
- Muskegon County3
- Isabella County2
- Mecosta County2
- Newaygo County2
- Oceana County2
27 more counties
- Berrien County2
- Alcona County1
- Alpena County1
- Antrim County1
- Arenac County1
- Benzie County1
- Cheboygan County1
- Clare County1
- Crawford County1
- Emmet 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
- Presque Isle County1
- Roscommon County1
- Wexford County1
Nearby
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. Rebuilt daily.