Heat Advisories in Michigan
171 heat advisories 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Heat Advisories
- 171
- Busiest year
- 201120 heat advisories
- Average year
- 9over 20 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.
- Cass County52
- Hillsdale County51
- Branch County50
- Saint Joseph County50
- Wayne County45
- Macomb County44
- Oakland County44
- Monroe County40
- Lenawee County39
- Washtenaw County39
- Livingston County34
- Calhoun County32
- Jackson County32
- Kalamazoo County32
- Van Buren County32
- Allegan County31
- Barry County31
- Eaton County31
- Ingham County31
- Kent County28
- Ionia County27
- Clinton County26
- Genesee County26
- Shiawassee County26
- Saint Clair County25
- Ottawa County25
- Saginaw County25
- Bay County24
- Huron County24
- Lapeer County24
- Midland County24
- Montcalm County24
- Tuscola County24
- Gratiot County23
- Sanilac County23
- Isabella County22
- Mecosta County21
- Newaygo County21
- Clare County19
- Lake County19
43 more counties
- Muskegon County19
- Oceana County19
- Osceola County19
- Mason County18
- Berrien County18
- Arenac County16
- Gladwin County16
- Iosco County16
- Ogemaw County15
- Roscommon County14
- Manistee County13
- Missaukee County13
- Wexford County13
- Alcona County12
- Alpena County12
- Oscoda County12
- Antrim County11
- Benzie County11
- Crawford County11
- Grand Traverse County11
- Kalkaska County11
- Leelanau County11
- Montmorency County11
- Otsego County11
- Cheboygan County10
- Emmet County10
- Presque Isle County10
- Baraga County9
- Dickinson County9
- Iron County9
- Marquette County9
- Gogebic County8
- Houghton County8
- Menominee County8
- Ontonagon County8
- Delta County5
- Charlevoix County5
- Keweenaw County4
- Alger County4
- Luce County3
- Schoolcraft County3
- Chippewa County2
- Mackinac County2
The latest heat advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 1:41 AM EDT | Heat Advisory | IWX | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 18 hr |
| Sep 2, 2:17 AM EDT | Heat Advisory | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 6 more | 18 hr |
| Sep 2, 2:08 AM EDT | Heat Advisory | DTX | Lenawee, Livingston, Macomb, Monroe, Oakland, Washtenaw and 1 more | 18 hr |
| Aug 31, 1:00 PM EDT | Heat Advisory | IWX | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 4 days |
| Jul 14, 12:45 PM EDT | Heat Advisory | IWX | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 31 hr |
| Jul 13, 12:57 PM EDT | Heat Advisory | IWX | Berrien, Branch, Cass, Hillsdale, Saint Joseph | 31 hr |
| Jul 13, 12:54 PM EDT | Heat Advisory | DTX | Bay, Genesee, Huron, Lapeer, Lenawee, Livingston and 11 more | 55 hr |
| Jul 13, 10:35 AM EDT | Heat Advisory | GRR | Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more | 57 hr |
| Jul 12, 3:17 PM EDT | Heat Advisory | APX | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 19 more | 53 hr |
| Jul 11, 2:43 PM EDT | Heat Advisory | MQT | Baraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 2 more | 30 hr |
| Jul 2, 8:03 PM EDT | Heat Advisory | DTX | Bay, Huron, Midland, Saginaw, Sanilac, Tuscola | 23 hr |
| Jul 2, 11:36 AM EDT | Heat Advisory | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 9 more | 31 hr |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.