Storm Austen Leaves More Than 280,000 Customers Without Power in Northwest France With 100 mph Gusts, but Cotality Expects Modest, Widely Spread Insured Losses

Storm Austen, the first named storm of the 2026-27 European winter season, moved across southern Britain and northern France on Friday, October 23, 2026, according to Cotality's Hazard HQ service. The UK Met Office named it on Tuesday, October 20, and by Friday it was crossing the English Channel with a central pressure of around 974 hectopascals, reaching the Low Countries by late morning. Cotality reported peak gusts of 100 mph, or about 161 km/h, at Pointe du Raz in Finistère, and 93 mph at the Île de Groix, both in France. In the United Kingdom the strongest gusts were 76 mph at St. Mary's Airport on the Isles of Scilly, 74 mph at Aberporth in Wales and 71 mph at Culdrose in Cornwall. Météo-France had issued orange wind warnings for more than 20 departments, and the French consumer site Meilleurtaux counted 23 departments under orange alert that morning without naming them. In Britain, the Met Office issued an amber wind warning for Cornwall, the Isles of Scilly and parts of west Devon, with yellow warnings across much of England and Wales.

The disruption was widespread. Cotality reported that more than 280,000 customers lost power in northwest France, more than 9,000 homes in Cornwall and Devon lost supply, and about 3,000 customers were affected in Ireland. In France three bridges in Normandy were closed and rail services were disrupted. In the United Kingdom, flights and trains were cancelled, schools in the south-west closed, fallen trees blocked roads in Cornwall and part of Brighton's West Pier collapsed. Trees fell in Waterford and Cork in Ireland, and roads flooded in north Staffordshire, where the Environment Agency had flood warnings in several regions. Storm Boelo followed: the Met Office issued an amber warning for much of Scotland, Northumberland, Cumbria and parts of Northern Ireland from 9 p.m. on Saturday, October 24 to 9 p.m. on Sunday, October 25, with gusts of 60 to 70 mph forecast and up to 80 mph on exposed coasts, and Met Éireann issued orange warnings for several western counties.

The most relevant question for the insurance industry is how large the losses will be, and the answer so far is that nobody has published a number. Cotality's page contains no dollar or pound estimate. Its senior weather scientist, Mark Dixon, said the company expects property damage to be relatively modest, spread across smaller claims rather than catastrophic, and that Austen's pattern, fallen trees, roof and fence damage and outages, is that of a typical early-season windstorm and not of large structural losses. He said claims are likely to be most concentrated in Brittany and Normandy, and added that windstorms remain a risk and have historically caused very large losses, with further claims expected over the weekend because of Storm Boelo.

For policyholders in France, Meilleurtaux set out how cover works in a guide published on the day of the storm. Home insurance policies usually include storm cover, known as garantie tempête. Insurers may require proof that winds were abnormally strong; according to ANIL, the national housing information agency quoted in the guide, they often ask for a certificate from a nearby weather station, or evidence that the wind damaged other well-built buildings within 5 kilometres. The separate natural disaster scheme, known as CatNat, applies only if winds averaged at least 145 km/h over ten minutes or reached 215 km/h in gusts. As a simple comparison, Austen's peak gust of about 161 km/h at Pointe du Raz is below the 215 km/h gust threshold, but gusts and ten-minute averages are different measures, and whether any commune qualifies for CatNat is a decision for the authorities and is not stated in the reports.

The claims process has set deadlines. The guide says that damage should generally be declared within five days of discovery, extended to 30 days if a ministerial order recognises the commune as a natural disaster zone. Tenants should tell their landlord about structural damage, since the owner makes that claim, and make their own claim for belongings with their own insurer. Examples of damage that France Assureurs lists as covered include fallen trees, roof damage or removal, furniture damaged by rain after a roof is damaged, and some flooding from related episodes. Deductibles under storm cover vary by contract and are usually below 380 euros, averaging 150 to 200 euros, while the CatNat deductible is 380 euros. Payouts depend on the contract's limits, ceiling and depreciation.

Exclusions and gaps are worth knowing. Vehicles fall under motor policies, not home insurance. Broken glass requires the optional glass breakage guarantee. Garden items such as fences, verandas and swimming pools are not included in every policy, and undeclared additions, such as a new garden shed, may not be covered. The guide does not give the number of claims, departmental lists or total insured losses, and the Cotality page does not either, so this article cannot provide them.

Context matters, too. Austen arrived after a month in which French insurers were dealing with the aftermath of the October 17 riots, which Morningstar DBRS estimated could cost insurers up to 1.2 billion euros, and a summer of record wildfire claims. A storm that produces many small claims adds to the workload of loss adjusters and call centres, even if the financial effect is modest. In the United Kingdom, where the storm caused outages, travel disruption and the collapse of part of a pier, typical home insurance policies cover storm damage to buildings and contents, subject to excesses, but no UK loss figures were given in the reports reviewed.

What to watch is whether Météo-France or the authorities recognise any commune under CatNat, whether modelers such as Cotality or PERILS publish loss estimates after the follow-on Storm Boelo, and whether the pattern of early storms continues into the winter. For households, the immediate advice is to photograph damage, make safe, and file the claim within the deadline.