EF0 tornado in Waukesha County, Wisconsin

The tornado began over a farm field where a few small limbs were downed. The tornado continued to the northeast, snapping a few trees and downing several large limbs. Further to the northeast, the view was not accessible with the tornado ending southwest of Big Muskego Lake, south of the Big Muskego Lake Wildlife area.

A round of severe thunderstorms and flash flooding occurred as a strong cold front approached and tracked across southern WI. More specifically, supercell thunderstorms developed from northeast IA into southwest WI and far southern WI during the late afternoon and evening hours. Eventually these storms transitioned to a squall line which had a number of tornadoes associated with it, as it tracked through southeast Wisconsin. Flash flooding affected much of the same region especially in Janesville. Many large hail reports and a small number of downburst damaging wind reports were also received.