Delta County weather alerts
There are no active weather alerts for Delta County, MI right now.
Since 2016 the National Weather Service has issued about 459 alerts that included Delta County, roughly 46 a year. The most common is the winter weather advisory (118 from 2016 to 2025). The last tornado warning was issued on July 20, 2026. 12 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Delta County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Menominee County, Alger County, Schoolcraft County, Marquette County.
Delta County alert history
Alert events that included Delta County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 118 | 8 | March 10, 2026 |
| Severe Thunderstorm Warning | 80 | 6 | July 20, 2026 |
| Flood Advisory | 44 | 7 | August 1, 2026 |
| Winter Storm Warning | 34 | 6 | April 2, 2026 |
| Winter Storm Watch | 29 | 5 | April 4, 2026 |
| Frost Advisory | 25 | 4 | September 23, 2026 |
| Dense Fog Advisory | 24 | 9 | October 23, 2026 |
| Cold Weather Advisory | 24 | 5 | January 30, 2026 |
| Severe Thunderstorm Watch | 20 | 1 | August 7, 2026 |
| Wind Advisory | 19 | 0 | March 15, 2025 |
| Red Flag Warning | 7 | 1 | May 16, 2026 |
| Fire Weather Watch | 5 | 1 | May 16, 2026 |
| Tornado Watch | 4 | 1 | July 20, 2026 |
| Freeze Warning | 4 | 2 | October 3, 2026 |
| Flood Warning | 4 | 3 | April 14, 2026 |
| Flood Watch | 3 | 1 | April 12, 2026 |
| Heat Advisory | 2 | 1 | June 29, 2026 |
| Tornado Warning | 2 | 4 | July 20, 2026 |
| Ice Storm Warning | 2 | 1 | April 4, 2026 |
| Extreme Cold Warning | 2 | 2 | January 23, 2026 |
| High Wind Warning | 2 | 0 | November 5, 2022 |
| Flash Flood Warning | 1 | 0 | August 9, 2017 |
| Coastal Flood Advisory | 1 | 0 | June 10, 2020 |
| High Wind Watch | 1 | 0 | December 16, 2021 |
| Blizzard Warning | 1 | 1 | March 15, 2026 |
| Freeze Watch | 1 | 0 | October 8, 2025 |
| Extreme Cold Watch | 0 | 1 | January 23, 2026 |
| Extreme Heat Warning | 0 | 1 | July 13, 2026 |
Tornado history in Delta County
12 tornadoes have been recorded in Delta County since 1950, injuring 3 people. That ranks 43 of 83 counties in Michigan. The most recent was on August 31, 2020 (rated EF1).
Strongest tornadoes in Delta County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 11, 1987 | F3 | Dickinson County | 71 mi | 150 yd | 0 | 0 |
| July 20, 1972 | F2 | Delta County | 0.8 mi | 70 yd | 0 | 1 |
| July 19, 1992 | F2 | Delta County | 0.2 mi | 10 yd | 0 | 2 |
| July 14, 1974 | F1 | Delta County | 5.2 mi | 27 yd | 0 | 0 |
| June 25, 1998 | F1 | Delta County | 1 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 31, 2020 | EF1 | Delta County | 0.6 mi | 200 yd | 0 | 0 |
| July 25, 2008 | EF0 | Delta County | 0.1 mi | 50 yd | 0 | 0 |
| May 30, 2002 | F0 | Delta County | 1 mi | 20 yd | 0 | 0 |
| June 25, 1998 | F1 | Delta County | 1 mi | 50 yd | 0 | 0 |
| October 5, 1997 | F1 | Delta County | 0.1 mi | 50 yd | 0 | 0 |
About Delta County
- Population: 36,687 (2024 estimate)
- State: Michigan
- NOAA Weather Radio SAME code: 026041 (how to use it)