Severe thunderstorms rolled across Wisconsin Wednesday evening packing strong winds knocking down trees and power lines in Dodge and Green Lake counties. Radar indicated tornado warnings were issued for portions of Dodge and Fond du Lac counties. Nobody was injured in two separate crashes on Interstate 41 during a heavy downpour. The first crash happened when a vehicle apparently hydroplaned on northbound Interstate 41 near Johnson Street, went into a ditch and overturned. A short time later there was another one vehicle crash on southbound 41 near Military Road. Minor flooding was reported on Highway 49 near Waupun.