France Floods Kill Four in South as Storm Austen Looms

At least four people have died after storms hammered southern France, and the France floods that followed forced dozens of residents into emergency shelters, authorities said late on Wednesday. Mouries and Saint-Martin-de-Crau, small towns between Montpellier and Marseille, were among the hardest hit, and officials reported that at least one person was injured.

"The water has risen to unprecedented levels," Jacques Witkowski, the prefect of the Bouches-du-Rhône region, said in a statement late on Wednesday, according to Reuters. Roads and train lines in the area were disrupted, Transport Minister Philippe Tabarot wrote in a post on X. Forecasters expected the weather in the south to settle, even as another storm gathered over the Atlantic.

Overnight rescues in the flooded south

Emergency crews worked through the night as floodwater swamped streets, damaged homes and cut off routes through both towns. Residents were moved into temporary shelters as water levels kept climbing past marks local officials described as unmatched. In Mouries and Saint-Martin-de-Crau, the shelters filled through the evening while crews checked on people stranded in low-lying properties.

The disruption spread beyond the worst-hit streets. Rail and road links across parts of the region were interrupted, stranding travellers and forcing detours for freight. Reuters reported that dozens of people were being housed in emergency shelters late on Wednesday as the flooding spread. Tabarot said on X that transport in the area was badly affected, and asked travellers to check before setting out.

Storm Austen closes in on the northwest

Even as the south began to dry out, the northwest was bracing for impact. Storm Austen, moving in from Ireland, was expected to reach Brittany and the Manche coast overnight from Thursday into Friday, with conditions worsening through Friday morning. Météo-France placed Finistère, Morbihan and Côtes-d'Armor under orange wind vigilance from 10 p.m. on Thursday, extending the alerts to Ille-et-Vilaine and Manche during the night.

Forecasters predicted widespread coastal gusts of 110 km/h, with peaks near 140 km/h on exposed headlands such as Cherbourg and Saint-Malo, along with very large swell in the Iroise Sea. Fifteen departments were under orange alert for Friday. Meteorologists warned that Austen could deepen rapidly over the Atlantic, raising the risk of fallen trees, power cuts and transport disruption as the system moves toward the Benelux and northern Germany.

The rail network felt the effects before the wind arrived. SNCF suspended services across Norman routes on Friday, with major interruptions on Breton and northern lines, and said disruptions could continue into Saturday. Across the Channel, Britain's Met Office issued an amber wind warning for Cornwall, the Isles of Scilly, Plymouth and parts of Devon for Friday morning.

Autumn storms on a warming sea

Southern France knows these autumn downpours well. Warm, moist air drawn off the Mediterranean collides with cooler air over the hills, dumping enormous amounts of rain in a matter of hours, and the low-lying towns of the coastal plain sit directly in the path of the runoff. These Mediterranean episodes have struck the region for as long as records have been kept. Similar deluges have hit elsewhere around the sea: Storm Adam flooding killed four in eastern Spain, and the same system buried Valencia in historic rain.

What is changing is the fuel behind them. A warmer Mediterranean evaporates more water into the air, and warmer air holds more of it, so storms carry a heavier load than they once did. According to the IPCC's climate assessments, human influence has intensified heavy rainfall in many regions as the atmosphere has warmed. The result is downpours that arrive faster and hit harder than infrastructure built for milder decades was designed to handle.

For emergency services, that means little margin for error. Authorities in the northwest urged residents to secure anything outdoors, keep clear of forests and the coast, and check rail schedules before travelling. With the south still pumping out basements and clearing roads while the northwest battened down its shutters, responders were preparing for consecutive storms at opposite ends of the country. Météo-France said the winds would peak overnight and ease through the course of Friday.