National Weather ServiceMichiganSevere Thunderstorm WarningArchive to October 1, 2026
Severe Thunderstorm Warnings in Michigan
The National Weather Service issued 278 severe thunderstorm warnings for Michigan in 2025 and 301 a year on average in 2008-2025; in 2021-2025 it had the 31st most of any state. 2026 through September: 474, 62% above the average of 293 for those months in 2008-2025. Cass was covered most often (244 times since 2008).
How many severe thunderstorm warnings does Michigan get?
Every severe thunderstorm warning that covered part of Michigan. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 474 |
| 2025 | 278 |
| 2024 | 298 |
| 2023 | 297 |
| 2022 | 262 |
| 2021 | 427 |
| 2020 | 342 |
| 2019 | 253 |
| 2018 | 253 |
| 2017 | 216 |
| 2016 | 205 |
| 2015 | 240 |
| 2014 | 299 |
| 2013 | 328 |
| 2012 | 309 |
| 2011 | 487 |
| 2010 | 311 |
| 2009 | 130 |
| 2008 | 488 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Michigan get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Michigan?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Cass | 244 | 59 | August 11, 2026 |
| Oakland | 244 | 58 | September 3, 2026 |
| Marquette | 233 | 56 | August 7, 2026 |
| Berrien | 228 | 61 | August 11, 2026 |
| St. Joseph | 226 | 61 | September 5, 2026 |
| Washtenaw | 225 | 47 | September 3, 2026 |
| Allegan | 224 | 46 | August 10, 2026 |
| Wayne | 219 | 48 | September 3, 2026 |
| St. Clair | 188 | 51 | September 3, 2026 |
| Calhoun | 185 | 41 | September 3, 2026 |
| Kent | 185 | 46 | August 9, 2026 |
| Kalamazoo | 182 | 44 | September 5, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest severe thunderstorm warnings for Michigan in AreaZine's record
NWS Northern IndianaWarningSeptember 5, 2026
Severe Thunderstorm Warning: Lagrange, Branch and St. Joseph, IN and MI
Expired 2:15 a.m. EDT, September 5, 2026
NWS Grand RapidsWarningSeptember 4, 2026
Severe Thunderstorm Warning: Eaton, MI
Expired 9:15 a.m. EDT, September 4, 2026
NWS Detroit/PontiacWarningSeptember 3, 2026
Severe Thunderstorm Warning: Wayne, MI
Expired 4:45 p.m. EDT, September 3, 2026
NWS Grand RapidsWarningSeptember 3, 2026
Severe Thunderstorm Warning: Calhoun and Jackson, MI
Expired 3:45 p.m. EDT, September 3, 2026
NWS Northern IndianaWarningSeptember 3, 2026
Severe Thunderstorm Warning: Lagrange, Steuben, Branch and 1 more, IN and MI
Expired 4:00 p.m. EDT, September 3, 2026
NWS Grand RapidsWarningSeptember 3, 2026
Severe Thunderstorm Warning: Jackson, MI
Expired 4:00 p.m. EDT, September 3, 2026
NWS Grand RapidsWarningSeptember 3, 2026
Severe Thunderstorm Warning: Clinton and Gratiot, MI
Expired 3:00 p.m. EDT, September 3, 2026
NWS Detroit/PontiacWarningSeptember 3, 2026
Severe Thunderstorm Warning: Shiawassee, MI
Expired 3:15 p.m. EDT, September 3, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a severe thunderstorm warning?
A severe thunderstorm warning means a storm is producing, or is about to produce, hail one inch across or larger and/or winds of 58 mph or more. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Michigan.