Rock County weather alerts
There are no active weather alerts for Rock County, WI right now.
Since 2016 the National Weather Service has issued about 931 alerts that included Rock County, roughly 93 a year. The most common is the severe thunderstorm warning (172 from 2016 to 2025). The last tornado warning was issued on July 3, 2026. 36 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 Rock County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Winnebago County, Dane County, Green County, Boone County.
Rock County alert history
Alert events that included Rock County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 172 | 41 | August 11, 2026 |
| Dense Fog Advisory | 124 | 7 | August 13, 2026 |
| Flood Warning | 101 | 8 | April 20, 2026 |
| Winter Weather Advisory | 89 | 7 | March 16, 2026 |
| Severe Thunderstorm Watch | 71 | 11 | August 21, 2026 |
| Flood Advisory | 55 | 6 | September 19, 2026 |
| Wind Advisory | 47 | 4 | May 12, 2026 |
| Cold Weather Advisory | 37 | 3 | January 26, 2026 |
| Tornado Warning | 35 | 13 | July 3, 2026 |
| Frost Advisory | 31 | 5 | May 11, 2026 |
| Flood Watch | 24 | 4 | September 19, 2026 |
| Heat Advisory | 23 | 3 | July 27, 2026 |
| Winter Storm Watch | 20 | 1 | March 15, 2026 |
| Winter Storm Warning | 20 | 1 | March 15, 2026 |
| Tornado Watch | 19 | 5 | June 17, 2026 |
| Flash Flood Warning | 14 | 8 | June 24, 2026 |
| Freeze Warning | 14 | 2 | October 17, 2026 |
| Extreme Heat Warning | 6 | 2 | July 27, 2026 |
| High Wind Warning | 6 | 1 | March 13, 2026 |
| Freeze Watch | 5 | 1 | October 17, 2026 |
| Extreme Heat Watch | 4 | 1 | June 29, 2026 |
| Fire Weather Watch | 3 | 0 | April 13, 2023 |
| Red Flag Warning | 3 | 0 | April 13, 2023 |
| Snow Squall Warning | 3 | 0 | February 19, 2022 |
| High Wind Watch | 2 | 0 | December 16, 2021 |
| Extreme Cold Warning | 2 | 1 | January 23, 2026 |
| Ice Storm Warning | 1 | 0 | February 22, 2023 |
| Blizzard Warning | 0 | 1 | March 16, 2026 |
| Extreme Cold Watch | 0 | 2 | January 23, 2026 |
Tornado history in Rock County
36 tornadoes have been recorded in Rock County since 1950, killing 1 people and injuring 49. That ranks 15 of 72 counties in Wisconsin. The most recent was on July 15, 2024 (rated EF0).
Strongest tornadoes in Rock County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| January 24, 1967 | F3 | Green County | 24.9 mi | 200 yd | 0 | 0 |
| March 27, 1991 | F2 | Green County | 32 mi | 440 yd | 1 | 5 |
| May 8, 1988 | F2 | Rock County | 27 mi | 173 yd | 0 | 0 |
| February 8, 2024 | EF2 | Rock County | 25.9 mi | 750 yd | 0 | 1 |
| October 9, 1970 | F2 | Rock County | 14.4 mi | 50 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 15, 2024 | EF0 | Rock County | 1.2 mi | 50 yd | 0 | 0 |
| June 22, 2024 | EF2 | Rock County | 6 mi | 700 yd | 0 | 0 |
| May 26, 2024 | EF0 | Rock County | 14.4 mi | 50 yd | 0 | 0 |
| May 26, 2024 | EF0 | Rock County | 11.8 mi | 50 yd | 0 | 0 |
| February 8, 2024 | EF2 | Rock County | 25.9 mi | 750 yd | 0 | 1 |
About Rock County
- Population: 165,461 (2024 estimate)
- State: Wisconsin
- NOAA Weather Radio SAME code: 055105 (how to use it)