2023-10-31 21:00:16
Gusts of up to 170 km/h on the Breton coast, waves of up to 10 meters on the Atlantic coast and heavy rain: storm Ciaran expected in the north-west quarter of France between Wednesday November 1 and Thursday November 2 seems well have the potential of a “weather bomb”. The qualifier, used by forecasters for a few days, brings back the specter of “storms of the century” of 1999, the deadliest the country has ever known. On December 26 and 27, Lothar then Martin ravaged France, devastating the forests and causing the death of 92 people.
With Ciaran, Météo-France anticipates a “very strong autumn storm”. Three Breton departments (Finistère, Morbihan and Côtes-d’Armor) are placed on orange alert for violent winds from Wednesday evening, a level which could turn red on Thursday morning and also concern Cotentin. Climatologist at the meteorological institute, Lauriane Batté evokes a “major storm” more “incommensurable” with those of 1999 in terms of intensity, severity and above all the territory concerned. According to the organization’s forecasts, storm Ciaran should be confined to the north-western quarter of France when Lothar and Martin had crossed the entire country with gusts above 100 km/h over almost the entire territory. Then, the expected winds should be less violent and ease as the depression progresses inland.
Peaks of between 150 km/h and 170 km/h are feared on the coast of Finistère, Côtes-d’Armor and Cotentin when the most violent winds flirted with 180 km/h in 1999. inland, gusts could oscillate between 110 and 130 km/h in Brittany and Cotentin. They will reach 100 km/h to 110 km/h in the Pays de la Loire and Haute-Normandie to the west of Hauts-de-France. Winds could blow up to 90 km/h or even 100 km/h in the Paris region when they had been measured at more than 170 km/h as Lothar passed.
Read also: Storm Ciaran: no TER in five regions on November 2; three departments of Brittany on orange alert on Wednesday
“It’s not the same configuration as in 1999comments meteorologist and climatologist Robert Vautard, Lothar had crossed France hollowing out with small, very concentrated whirlpools which had developed from the earth. With Ciaran, we are in a large low pressure system which goes from Scandinavia to Spain with small eddies forming at the back and should mainly affect the coastline. »
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