Grant County weather alerts
There are no active weather alerts for Grant County, WI right now.
Since 2016 the National Weather Service has issued about 730 alerts that included Grant County, roughly 73 a year. The most common is the severe thunderstorm warning (95 from 2016 to 2025). The last tornado warning was issued on July 2, 2026. 59 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 Grant County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Richland County, Jo Daviess County, Dubuque County, Crawford County.
Grant County alert history
Alert events that included Grant County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 95 | 26 | October 13, 2026 |
| Winter Weather Advisory | 91 | 5 | March 16, 2026 |
| Dense Fog Advisory | 80 | 2 | August 7, 2026 |
| Severe Thunderstorm Watch | 62 | 12 | August 21, 2026 |
| Flood Warning | 55 | 1 | April 18, 2026 |
| Cold Weather Advisory | 44 | 3 | January 26, 2026 |
| Wind Advisory | 39 | 3 | May 12, 2026 |
| Flash Flood Warning | 35 | 0 | August 17, 2025 |
| Flood Watch | 32 | 5 | September 19, 2026 |
| Frost Advisory | 27 | 5 | May 11, 2026 |
| Heat Advisory | 27 | 3 | September 4, 2026 |
| Winter Storm Watch | 25 | 1 | March 15, 2026 |
| Winter Storm Warning | 23 | 2 | March 15, 2026 |
| Tornado Watch | 19 | 5 | July 20, 2026 |
| Tornado Warning | 17 | 5 | July 2, 2026 |
| Freeze Warning | 16 | 2 | October 17, 2026 |
| Flood Advisory | 11 | 0 | August 17, 2025 |
| Extreme Heat Warning | 6 | 2 | July 26, 2026 |
| Extreme Heat Watch | 4 | 2 | July 26, 2026 |
| High Wind Warning | 4 | 1 | March 13, 2026 |
| Fire Weather Watch | 4 | 0 | September 3, 2023 |
| Red Flag Warning | 4 | 0 | September 3, 2023 |
| Extreme Cold Warning | 3 | 1 | January 23, 2026 |
| High Wind Watch | 2 | 0 | December 16, 2021 |
| Freeze Watch | 2 | 1 | October 17, 2026 |
| Extreme Cold Watch | 1 | 1 | January 23, 2026 |
| Ice Storm Warning | 1 | 0 | February 22, 2023 |
| Blizzard Warning | 1 | 1 | March 15, 2026 |
Tornado history in Grant County
59 tornadoes have been recorded in Grant County since 1950, injuring 10 people. That ranks 4 of 72 counties in Wisconsin. The most recent was on July 15, 2024 (rated EF1).
Strongest tornadoes in Grant County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 7, 2021 | EF3 | Grant County | 9.4 mi | 1,100 yd | 0 | 0 |
| June 4, 1969 | F2 | Grant County | 24.4 mi | 200 yd | 0 | 0 |
| May 30, 1985 | F2 | Grant County | 16 mi | 500 yd | 0 | 0 |
| September 9, 1970 | F2 | Grant County | 15.7 mi | 200 yd | 0 | 0 |
| May 25, 1957 | F2 | Grant County | 15.6 mi | 400 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 15, 2024 | EF1 | Grant County | 0.3 mi | 30 yd | 0 | 0 |
| June 22, 2024 | EF0 | Grant County | 0.2 mi | 40 yd | 0 | 0 |
| August 7, 2021 | EF3 | Grant County | 9.4 mi | 1,100 yd | 0 | 0 |
| August 10, 2020 | EF0 | Grant County | 0.6 mi | 50 yd | 0 | 0 |
| March 28, 2020 | EF1 | Grant County | 6.2 mi | 120 yd | 0 | 0 |
About Grant County
- Population: 52,330 (2024 estimate)
- State: Wisconsin
- NOAA Weather Radio SAME code: 055043 (how to use it)