The heat wave will continue Friday throughout the territory, with for the first time four departments of the South placed in red alert due to an exceptional heat and 76 in orange alert, according to Météo-France.
The night is going to be difficult
This intense canicular episode will rise a notch in Gard, Vaucluse, Hérault and the north of Bouches-du-Rhône, placed in red vigilance. The night from Thursday to Friday looks particularly hot with minimum temperatures at sunrise often between 20 and 24 degrees.
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In the morning, maritime entries are again expected on the Atlantic seaboard and in particular on the west of Aquitaine. Elsewhere, the sky will be clear and the morning temperatures will again be very high especially in the center-west of the country, in the Rhone Valley and in Provence with no less than 22 to 24 degrees. It will be cooler on the extreme north with 13 to 15 degrees. In the morning, the coastal greyness will resorb quickly and the sun will take over without question.
Up to 45 degrees in the shade
With the establishment of a small westerly wind on the Atlantic seaboard, the rise in temperatures will be more limited with a maximum of 26 to 30 degrees. Elsewhere, temperatures will rise in the afternoon to 27 to 39 degrees, locally 40 on the Center and the Auvergne Rhône-Alpes. But it is on the South-East that the heat will be most overwhelming with unusually high temperatures, reaching 42 to 44 degrees in the lower Rhone Valley, in the interior of Languedoc and Provence, or even locally 45 degrees to the south. 'shadow !
Tramontane and mistral will blow moderately, around 60 km / h in the lower Rhone Valley. The northeasterly wind will weaken on the Channel coast.