15 departments placed in red vigilance by Météo France, 51 departments in orange

The heat wave intensifies this Sunday, indicates Météo France, which now places 15 departments in red heat wave vigilance and extends orange vigilance to 51 departments. The other departments of the territory are on yellow alert, with the exception of Southern Corsica, the only department in green.

The 15 departments in red vigilance are the following: Finistère, Morbihan, Ille-et-Vilaine, Côtes-d’Armor, Loire-Atlantique, Maine-et-Loire, Vendée, Deux-Sèvres, Charente-Maritime, Charente, Gironde, Dordogne, Lot-et-Garonne, Landes and Gers.

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This sunday already, the temperature front between 36°C and 38°C is progressing towards the north of the country, with a southern third above 40°C. The peak of the heat wave, in other words the hottest day, is expected Monday with maximum everywhere above 30°C, 38°C to 40°C from the west to the Rhône valley and an axis from the Garonne valley to Brittany subject to temperatures above 40° vs. The night from monday to tuesday will be particularly hot, with temperatures that will not drop below 25/26°C as far as Calvados. A heat associated with a lot of wind. Temperature records will probably be broken all over France between Monday noon and Tuesday morning.

Tuesday, temperatures will drop sharply in the southwest and west of the country. In some places, we should therefore experience drops of 10 to 15°C, or even 20°C in just a few hours, like what happened on the Atlantic coast in June. It is a “radical” drop in temperatures at the time of the “wind shift from the ocean”, explains Olivier Proust, forecaster at Météo France.

Meanwhile, in the rest of the territory and in particular in the lower Rhône valley, vigilance will still “drag” for a good part of the week, with maximum temperatures between 35°C and 40°C.

A stormy streak could affect France following this heat wave, with stormy showers over Brittany and the Channel from Tuesday, and the following night between the Pyrenees and Burgundy. Météo France is still wondering “about the violence of the phenomena” even if a priori they would not reach that of the phenomena of the beginning of summer. “We will monitor this risk”, indicates Olivier Proust.


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