Storm Record · Jefferson, Walworth Counties
June 25, 2009: Straight-line wind in Jefferson and Walworth Counties
64
Strongest gust
3
NWS reports
What the National Weather Service recorded
A broken line of showers and thunderstorms developed from low-level convergence and a weak trough axis. MLCAPE values were near 2000-2500 J/kg, temperatures were in the upper 80s and the surface dewpoints were near 70. These storms moved through South-central Wisconsin and produced wind damage in Jefferson and Walworth counties.
Source: NOAA Storm Events Database · episode 30277
Every report, in the Weather Service's words
Where It Hit
| Location | County | Hazard | Size | Report |
|---|---|---|---|---|
| Ft Atkinson (3 S) | Jefferson | Wind | 64 mph wind | Thunderstorm wind gusts toppled several large trees. |
| Ft Atkinson (5.2 SW) | Jefferson | Wind | 64 mph wind | Thunderstorm wind gusts toppled several large trees at the Koshkonong Mounds CC golf course on the east side of Lake Koshkonong southwest of Ft. Atkinson in Jefferson County. Additionally, a tent was damaged and blew away at the Jellystone Campground on the southeast side of Lake Koshkonong. |
| Whitewater | Walworth | Wind | 62 mph wind | Mesonet at UW Whitewater measured 62 mph wind gust. Several large trees were toppled in the Whitewater area. |
Service areas this storm touched