The storms on Monday in southeastern France have forced a clean-up operation during which SNCF will check there has been no damage to tracks on the Paris-Milan high speed line which would prolong the closure, it said.

The storms in the Maurienne Valley around the border station of Modane in France had caused mud to build up on the tracks, prompting traffic to be suspended from 3pm on Monday, the operator said.

The storm prompted floods in Modane with mud covering the tracks in the station, the last stop on the line before Italy. The floods caused damage in the town but no casualties were reported.

The high-speed train service that links Paris with Turin and Milan was out of action for 19 months after a landslide badly damaged the track in 2023.

It reopened in March 2025, offering three round trips per day on the French SNCF service and two round trips per day via the Italian Frecciarossa, whisking passengers from Paris to the great cities of northern Italy in just six or seven hours.