Marathon County weather alerts
There are no active weather alerts for Marathon County, WI right now.
Since 2016 the National Weather Service has issued about 783 alerts that included Marathon County, roughly 78 a year. The most common is the severe thunderstorm warning (150 from 2016 to 2025). The last tornado warning was issued on July 21, 2026. 63 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 Marathon County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Lincoln County, Taylor County, Clark County, Portage County.
Marathon County alert history
Alert events that included Marathon County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 150 | 35 | September 4, 2026 |
| Winter Weather Advisory | 117 | 7 | March 16, 2026 |
| Dense Fog Advisory | 63 | 6 | September 1, 2026 |
| Cold Weather Advisory | 62 | 3 | January 26, 2026 |
| Flood Warning | 53 | 5 | April 18, 2026 |
| Flood Advisory | 47 | 9 | September 4, 2026 |
| Winter Storm Warning | 44 | 1 | March 15, 2026 |
| Severe Thunderstorm Watch | 43 | 6 | July 8, 2026 |
| Frost Advisory | 41 | 7 | October 5, 2026 |
| Winter Storm Watch | 36 | 2 | April 2, 2026 |
| Wind Advisory | 22 | 0 | December 20, 2025 |
| Tornado Warning | 21 | 8 | July 21, 2026 |
| Flood Watch | 18 | 5 | July 2, 2026 |
| Freeze Warning | 16 | 4 | October 17, 2026 |
| Tornado Watch | 16 | 3 | July 20, 2026 |
| Heat Advisory | 10 | 1 | July 13, 2026 |
| Flash Flood Warning | 7 | 4 | April 17, 2026 |
| Extreme Cold Warning | 5 | 1 | January 23, 2026 |
| Freeze Watch | 3 | 1 | October 17, 2026 |
| Fire Weather Watch | 2 | 0 | April 12, 2023 |
| Ice Storm Warning | 2 | 2 | April 4, 2026 |
| Extreme Heat Warning | 1 | 1 | June 29, 2026 |
| Blizzard Warning | 1 | 1 | March 15, 2026 |
| High Wind Watch | 1 | 0 | December 16, 2021 |
| High Wind Warning | 1 | 0 | December 16, 2021 |
| Red Flag Warning | 1 | 0 | April 12, 2023 |
| Extreme Cold Watch | 0 | 1 | January 23, 2026 |
| Extreme Heat Watch | 0 | 1 | June 29, 2026 |
Tornado history in Marathon County
63 tornadoes have been recorded in Marathon County since 1950, killing 5 people and injuring 28. That ranks 3 of 72 counties in Wisconsin. The most recent was on May 15, 2025 (rated EF0).
Strongest tornadoes in Marathon County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 4, 1958 | F4 | Eau Claire County | 59.2 mi | 880 yd | 4 | 3 |
| August 31, 1977 | F4 | Marathon County | 31.8 mi | 1,000 yd | 0 | 10 |
| September 28, 1971 | F3 | Marathon County | 78.4 mi | 200 yd | 0 | 0 |
| September 28, 1971 | F3 | Chippewa County | 49.6 mi | 300 yd | 0 | 5 |
| April 10, 2011 | EF3 | Marathon County | 21.2 mi | 1,050 yd | 0 | 2 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 15, 2025 | EF0 | Marathon County | 2.5 mi | 65 yd | 0 | 0 |
| May 15, 2025 | EF2 | Clark County | 4.6 mi | 230 yd | 0 | 0 |
| June 17, 2024 | EF0 | Clark County | 0.8 mi | 46 yd | 0 | 0 |
| May 21, 2024 | EF1 | Marathon County | 2.1 mi | 80 yd | 0 | 0 |
| May 21, 2024 | EF1 | Marathon County | 2.1 mi | 60 yd | 0 | 0 |
About Marathon County
- Population: 139,091 (2024 estimate)
- State: Wisconsin
- NOAA Weather Radio SAME code: 055073 (how to use it)