Part of the 2023–24 European windstorm season, Ciarán impacted northwestern Europe and killed 21 people, eleven of whom were in Italy and four in France.

Widespread damage from 100 miles per hour (160 km/h) winds were reported in the Channel Islands, while 1.2 million French households were left without electricity.

More heavy rainfall was expected to fall which would exacerbate the flooding from Storm Babet a week prior.

The Met Office's long-range forecast stated that Storm Ciarán would move away on 3 November, with many places still with blistering winds and rain spells.

[11] The Channel Islands were due to be hit with gusts around 95 mph (153 km/h) with schools closed and a red weather warning in place.

[17] In Dorset, the Freshwater Beach Holiday Park at Burton Bradstock was destroyed.

[24] Twenty-one people were killed during the storm, including: a 46-year-old woman who died in Germany when a tree fell on her.

[32] Eight people were killed during heavy rains in the region of Tuscany, Italy,[33][34] with rivers flooding and causing damage.

[35] The Jersey Zoo announced that one of their Chilean flamingos had been killed by the storm, but all the other animals had been accounted for.