Olmsted County weather alerts
There are no active weather alerts for Olmsted County, MN right now.
Since 2016 the National Weather Service has issued about 800 alerts that included Olmsted County, roughly 80 a year. The most common is the severe thunderstorm warning (128 from 2016 to 2025). The last tornado warning was issued on April 17, 2026. 37 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 Olmsted County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Dodge County, Mower County, Wabasha County, Goodhue County.
Olmsted County alert history
Alert events that included Olmsted County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 128 | 13 | September 2, 2026 |
| Winter Weather Advisory | 102 | 7 | April 2, 2026 |
| Dense Fog Advisory | 81 | 5 | September 28, 2026 |
| Severe Thunderstorm Watch | 62 | 13 | September 2, 2026 |
| Wind Advisory | 61 | 5 | May 12, 2026 |
| Cold Weather Advisory | 60 | 3 | January 26, 2026 |
| Winter Storm Watch | 41 | 1 | March 15, 2026 |
| Flood Watch | 36 | 3 | September 19, 2026 |
| Flood Warning | 36 | 1 | September 19, 2026 |
| Winter Storm Warning | 34 | 1 | March 15, 2026 |
| Heat Advisory | 23 | 4 | July 27, 2026 |
| Freeze Warning | 21 | 2 | October 17, 2026 |
| Tornado Watch | 20 | 3 | May 17, 2026 |
| Frost Advisory | 16 | 3 | May 11, 2026 |
| Flood Advisory | 12 | 1 | July 1, 2026 |
| Flash Flood Warning | 12 | 0 | June 21, 2024 |
| Extreme Cold Warning | 10 | 1 | January 23, 2026 |
| Blizzard Warning | 10 | 1 | March 15, 2026 |
| Tornado Warning | 10 | 4 | April 17, 2026 |
| Red Flag Warning | 7 | 1 | March 28, 2026 |
| Extreme Heat Warning | 5 | 2 | July 26, 2026 |
| Extreme Heat Watch | 3 | 2 | July 26, 2026 |
| Fire Weather Watch | 3 | 1 | March 28, 2026 |
| High Wind Watch | 2 | 1 | March 13, 2026 |
| Freeze Watch | 2 | 1 | October 17, 2026 |
| Extreme Cold Watch | 2 | 1 | January 23, 2026 |
| High Wind Warning | 1 | 1 | March 13, 2026 |
Tornado history in Olmsted County
37 tornadoes have been recorded in Olmsted County since 1950, injuring 39 people. That ranks 16 of 87 counties in Minnesota. The most recent was on September 20, 2021 (rated EF0).
Strongest tornadoes in Olmsted County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 16, 1962 | F4 | Olmsted County | 0.5 mi | 33 yd | 0 | 34 |
| April 30, 1967 | F2 | Olmsted County | 6.8 mi | 10 yd | 0 | 0 |
| May 17, 1982 | F2 | Olmsted County | 4 mi | 10 yd | 0 | 0 |
| April 13, 1964 | F2 | Olmsted County | 3.4 mi | 50 yd | 0 | 0 |
| September 16, 1962 | F2 | Olmsted County | 3 mi | 33 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 20, 2021 | EF0 | Olmsted County | 5.7 mi | 100 yd | 0 | 0 |
| June 4, 2019 | EF1 | Olmsted County | 1.3 mi | 75 yd | 0 | 0 |
| July 19, 2017 | EF1 | Olmsted County | 0.8 mi | 25 yd | 0 | 0 |
| June 28, 2017 | EF0 | Olmsted County | 0.5 mi | 25 yd | 0 | 0 |
| June 28, 2017 | EF0 | Olmsted County | 0.4 mi | 25 yd | 0 | 0 |
About Olmsted County
- Population: 166,424 (2024 estimate)
- State: Minnesota
- NOAA Weather Radio SAME code: 027109 (how to use it)
- Cities: Rochester