Severe thunderstorms rolled through Wisconsin Tuesday afternoon and evening prompting multiple tornado warnings in Dodge and Fond du Lac counties. National Weather Service meteorologist Kevin Wagner says the severe weather outbreak started in Iowa and moved to the northeast into Wisconsin. Dodge County emergency management director Joe Meagher says strong winds knocked down trees and power lines, causing power outages. In Fond du Lac County, trees were reported down in the western half of Fond du Lac County including a report of a tree falling on a house in Ripon. Fond du Lac County emergency management director John Ross says spotters reported wind gusts of 60-70 miles an hour in the eastern portion of the county. No injuries were reported.