The National Weather Service said a tornado touched down in southern Wisconsin over the weekend.
The agency said it the twister formed Saturday about 9 p.m. about three miles southwest of Rio in Columbia County. It caused minor tree damage that affected power lines, but no one was hurt.
Elsewhere, Crawford and Grant counties in the southwestern corner of Wisconsin have declared states of emergency because of water damage.
Crawford County had flooding and multiple mudslides that closed several roads and forced evacuation of a number of homes. In Grant County, roadways were flooded along with an unspecified number of homes.
Rescue crews saved all 54 canoeists who got stranded on the Wisconsin River in Grant County.
The weather service warned that additional storms Sunday could result in heavy rain and flash flooding.