The tornadoes struck the towns of Grezzago and Trezzo d'Adda, just outside Milan, on Monday afternoon.
A video clip (below) shows the full force of the tornadoes as they swept through the area.
The mayor of Trezzo d'Adda, Danilo Villa, said repairs would likely cost €5 million, news site Milan Today reported.
"One woman told me that she was lifted up in her car and hurled ten metres. Thankfully, she only suffered minor injuries," the mayor said.
A dozen people have been displaced by the tornadoes, Milan Today said.