If you're planning to travel to the region of Emilia-Romagna (this includes cities such as Bologna, Parma, Modena, Ravenna, Rimini) please be aware that many areas are currently being affected by severe flooding.
Rail service is currently suspended between Faenza and Forli and Porto Maggiore and Ravenna. The national railway is posting train service interruption updates on this page; it's in Italian but you can translate it using Google Translate.
You can also view weather warnings and updates at Italian Civil Protection (in Italian). The Civil Protection service is recommending that people avoid unnecessary travel in the flood-affected areas.