Storm Record · Jefferson, Waukesha Counties
August 12, 2025: Straight-line wind in Jefferson and Waukesha Counties
64
Strongest gust
2
NWS reports
What the National Weather Service recorded
A line of thunderstorms developed and swept north across southern WI with the return of a warm front. A small number of trees were damaged by the high winds.
Source: NOAA Storm Events Database · episode 204595
Every report, in the Weather Service's words
Where It Hit
| Location | County | Hazard | Size | Report |
|---|---|---|---|---|
| Delafield (.5 W) | Waukesha | Wind | 64 mph wind | About a half a dozen large branches and tops of trees broken off along with two downed and split trees. |
| Sullivan (1.06 SW) | Jefferson | Wind | 60 mph wind | Uprooted tree north of Sullivan. Other minor tree branches down in the city. |