EF1 Tornado — Walworth, Wisconsin

2024-06-22 · near Delavan Arpt, Walworth, Wisconsin

Event narrative

Tornado appeared to begin on the north end of Delavan Lake with some of the worst damage occurring in a subdivision northwest of Williams Bay where a number of houses lost portions or most of their roofs. Damage continued southeast through Lions Park and the Williams Bay Lakefront Park before ending over Geneva Lake.

Wider weather episode

Severe thunderstorms developed across western Wisconsin and moved eastward across southern Wisconsin through the afternoon and evening hours on June 22nd due to passing low pressure and its approaching cold front. There were supercell thunderstorms along with bowing segments along this line which lead to multiple areas of damage. Two strong tornadoes occurred, which were rated EF-2 near Argyle and through the south side of Janesville. Many reports of flash flooding were received due to torrential rainfall and slow storm movement or the training of thunderstorms. One of the other issues for this event was that it occurred on a Saturday evening where numerous large events were occurring which ended up cancelling or postponing to a later date.

View location on OpenStreetMap → (42.6242, -88.6101)

Source: NOAA Storm Events Database, event_id 1179310. Narrative written by the NWS forecast office that issued the report.