Weather alerts in Michigan, 2021
2,959 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 2,959
- Warnings
- 1,019
- Watches
- 142
- Advisories
- 909
- Busiest month
- August518 alerts
- Busiest day
- September 7, 2021122 alerts
Over time
By month
The alerts
2,959 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wayne County140
- Cass County138
- Oakland County138
- Macomb County132
- Saint Joseph County131
- Ingham County123
- Allegan County123
- Hillsdale County123
- Calhoun County122
- Ottawa County119
- Jackson County114
- Branch County114
- Van Buren County113
- Livingston County113
- Kalamazoo County111
- Washtenaw County109
- Clinton County108
- Barry County107
- Monroe County106
- Muskegon County105
- Shiawassee County105
- Eaton County104
- Lenawee County103
- Saint Clair County102
- Saginaw County99
- Genesee County98
- Kent County97
- Oceana County97
- Mason County95
- Gratiot County93
- Lapeer County93
- Alger County92
- Ionia County91
- Montcalm County90
- Bay County89
- Mecosta County88
- Schoolcraft County88
- Huron County88
- Antrim County87
- Newaygo County87
43 more counties
- Lake County86
- Manistee County86
- Marquette County86
- Menominee County83
- Tuscola County82
- Benzie County81
- Houghton County81
- Sanilac County81
- Delta County81
- Charlevoix County79
- Isabella County79
- Grand Traverse County78
- Kalkaska County77
- Clare County77
- Osceola County77
- Midland County77
- Berrien County77
- Leelanau County76
- Ontonagon County75
- Emmet County73
- Ogemaw County73
- Missaukee County71
- Gogebic County71
- Wexford County70
- Dickinson County70
- Cheboygan County69
- Crawford County69
- Roscommon County69
- Alcona County66
- Gladwin County66
- Iron County66
- Baraga County65
- Otsego County63
- Iosco County63
- Arenac County62
- Oscoda County60
- Alpena County60
- Presque Isle County59
- Luce County56
- Montmorency County52
- Mackinac County52
- Chippewa County50
- Keweenaw County45
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.