The Goretti storm hits Île-de-France this Friday, January 9, 2026. The Transilien Line N and Line U are experiencing significant disruptions due to obstacles on the tracks, with traffic heavily impacted until midday. Line N is affected between Plaisir-Grignon and Paris Montparnasse, as well as between Mantes-la-Jolie and Paris Montparnasse, in both directions.