Monday afternoon, up to 46 departments were involved. On Tuesday morning, Météo-France kept four departments on alert, due to an episode of locally-severe fall thunderstorms, scheduled to stop at noon.
The four remaining departments are Alpes-de-Haute-Provence, Bouches-du-Rhône, Var and Vaucluse. Strong thunderstorms are currently occurring in western Bouches-du-Rhône and Vaucluse. Other storms affect the Var and the Alpes-Maritimes. They go back north, according to a bulletin broadcast at six o'clock.
"We have found 40 to 50mm on the north and east of the Hérault, on the west of the Gard 50 to 80mm.On the Bouches-du-Rhône, there are 40 to 50mm fell in 1 to 2 hours. the Vaucluse cumulus are lower, of the order of 30 to 40mm on the southwest of the department, "detailed the bulletin stating that" in these departments, there were gusts of the order of 90km / h ". A stormy north-south line over western Vaucluse and Bouches-du-Rhone is slowly moving east.
Other storms coming from the sea concern the Var then the Alpes-de-Haute-Provence.
These stormy waves, relatively mobile, however give very heavy rainfall around 30 to 50 mm in a short time and locally around 80-90 mm in the departments in vigilance Orange Rain-Flood. They are also accompanied by hail, very strong gusts of wind that can exceed 90/100 km / h or even swirling phenomena for departments in vigilance Orange Storms. Météo France advises "not to engage in any way, on foot or by car, on a submerged track" and, "in areas usually floodable", to "secure" property likely to be damaged "and watch the rising waters. "