A difficult evening for Île-de-France travelers. On Thursday, August 27, 2026, sheets of rain and strong gusts of wind swept over the Paris region in the early evening. In just a few minutes, the storm—brief but violent—brought down many trees onto the railways. The result: a largely disrupted rail network, from the RER to the Transiliens and the main lines, with delays measured in hours at several Paris stations. The eight departments in the region had been placed under orange vigilance for storms by Météo-France, and the Val-de-Marne ranked among the hardest-hit areas.
The scale of the phenomenon is evident in the records: according to Météo-France, gusts exceeding 130 km/h were recorded in Nangis, in Seine-et-Marne, while more than 26 mm of rain fell in a single hour near Chevru. In the face of the winds, the City of Paris closed all its parks and gardens from 8 p.m.
On the RER A, service was suspended between Fontenay-sous-Bois and Joinville-le-Pont (Val-de-Marne) after a tree fell near Joinville-le-Pont, leaving the rest of the line highly disrupted. The RER C was likewise cut on several branches, between Massy-Palaiseau and Gare d'Austerlitz as well as between Juvisy and central Paris, due to obstacles on the tracks at Ardoines in Vitry-sur-Seine (Val-de-Marne).
This Friday morning, the RER C remains directly affected by the weather in the Vitry-sur-Seine area: according to the operator, the Ardoines, Vitry-sur-Seine, and Ivry-sur-Seine stations are not being served until 10:30 toward Versailles-Château, Saint-Quentin-en-Yvelines, and Pontoise, due to heavy rain and thunderstorms.
The RER D was disrupted until 9:30 p.m. on the stretch between Villeneuve-Saint-Georges (Val-de-Marne) and Gare de Lyon after a tree was reported on the tracks between Gare de Lyon and Maisons-Alfort. Meanwhile, the RER E was not spared, with delays caused by an incident on the line at Villiers-sur-Marne (Val-de-Marne).
On the Transilien network, falling trees also caused damage. The P line was suspended between Mormant and Nangis, as well as between Meaux (Seine-et-Marne) and La Ferté-Milon (Aisne). To the south, the R line saw traffic halted between Gare de Lyon and Melun (Seine-et-Marne), with an obstruction blocking the tracks in the Paris Gare de Lyon area.
In the capital’s southern stations, the evening turned into a headache. By 8:30 p.m., delays of up to 1 hour 30 minutes were recorded for departures and arrivals at Gare de Lyon, a situation similar to what was seen at Gare de Bercy-Bourgogne. At Gare d’Austerlitz, announced delays climbed to four hours. The SNCF also canceled the Intercités de nuit planned for this Thursday evening toward southern France.
These storm-related incidents were added to another dark moment of the day, this time with no connection to the weather: a power outage crippled Gare Montparnasse this Thursday afternoon, leaving thousands of travelers stranded on the return from vacation. A double blow for a network already stretched to the limit in the final week before the new school year begins.
This Friday, August 28, 2026, the fallout from the storms is still being felt on part of the network. SNCF Réseau’s technical teams remain on standby to clear the remaining blocked tracks and enable a gradual return to normal. Travel times may stay longer on certain lines in the morning, as services resume their usual pace.
As with any such episode, it’s prudent to check your line status before you set off. Île-de-France Mobilités and Transilien urge travelers to consult real-time timetables via their app or site, as well as traffic updates from RATP for the sections run by the operator. This precaution helps anticipate potential delays or to choose an alternative route. Finally, a reminder: if a new weather warning is issued, non-essential travel should be postponed and people should stay sheltered until the situation passes.
To stay on top of daily traffic developments, check our metro, RER and Transilien traffic updates updated in real timel.
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