Tuesday afternoon and evening, “thunderstorms will again develop from the Massif Central then these will rise quickly (…) towards the north of Rhône-Alpes, Burgundy and Franche-Comté and to the German borders “, announces the bulletin of Météo-France.
“These storms will generally be quite brief but sometimes violent with sustained gusts of wind (around 100 km / h), hail and very high intensity of precipitation locally giving fairly significant accumulations”, specifies the meteorological service, justifying the activation of orange vigilance.
A rapid improvement in the situation is expected overnight from Tuesday to Wednesday.
The other threatening stormy episode concerns Hérault and Gard, where the first showers started on Tuesday morning, with a peak in storms anticipated for midday and Tuesday afternoon, said Météo-France in its 06:00 bulletin. .
“The situation remains conducive to a stationary stormy risk”, consequently “very strong accumulations of rain in a short time can occur, around 80 mm in less than 3 hours”, according to Météo-France. “During the day, accumulations close to 100 to 150 mm are therefore possible locally.”
Orange vigilance is required, also taking into account the sudden floods that such intensities of rain can cause. But “there remains a marked uncertainty both in chronology and in location on these storms”, warns Météo-France.
“This situation, however, requires special attention, because this episode should continue during the day of Wednesday (…) for which the risk will become clearer”, announces the weather service.
On Tuesday, a stormy episode quickly crossed Ile-de-France and the neighboring regions, without causing significant damage despite strong gusts and hail. At the top of the Eiffel Tower, gusts of up to 102 km/h have been measured.
Numerous hailstorms were reported. “Very locally, large hailstones (4 to 5 centimeters in diameter) could be photographed in the west of Loiret”, according to Météo-France.
With the exception of southern Corsica, Var and the Alpes-Maritimes, the entire metropolis is concerned on Tuesday by yellow or orange vigilance.
From Brittany and the Pays de la Loire to Normandy in the morning, then to the west of Hauts-de-France in the afternoon, the clouds will be numerous and will be accompanied by frequent rainy periods, sometimes thunderstorms. A south-westerly wind at 60 km/h will continue over these north-west regions.
In the South-West the day will be calmer, sunny spells will largely dominate.
Elsewhere, clearings and clouds will alternate, a few isolated but locally stormy showers will be possible.