Weather: With violent storms expected this Tuesday, why should we fear very dangerous bouts of rain?

France is just beginning to get out of the third heat wave that it may soon experience... floods. That's what many forecasters fear at the start of the week, while stormy episodes are expected on Tuesday in France.

In fact, thunderstorms, sometimes violent, should strike on Tuesday 16 August in several regions of France. In the front line, the Pyrenees, south of the Alps or even the mountains of Corsica. On the rain side, rain is expected between the Belgian border and Alsace.

'large accumulations of rain'

While a significant deterioration between the southwest and central massif is expected tomorrow, the risk of flooding is becoming more and more.

“Towards Roussillon, Sevin, we expect large accumulations of precipitation, locally more than 100 liters of water per square meter, on very dry and impermeable soils. Flood risks are expected to be significant in these areas. The Mediterranean region, and in Sometimes a severe storm will continue to rain on Wednesday in the Southeast," analyzes Mark Hay, weather journalist for BFMTV.

Especially since the condition of the soil suggests a violent flood. In fact, French soil lost its absorbency after being bruised by frequent heat waves. The Water Information Center explains that "after a period of drought, dry soil is no longer able to absorb rain properly and this can cause floods, floods and landslides."

mediterranean ring

In addition, the counties of Hérault and Gard may soon experience a bout of the Mediterranean, with "the risk of persistent, intense, insidious storms," warns Météo Paris.

In fact, thunderstorms will strike in the southwest and should advance toward the southeast as of Tuesday, August 16. They can hit Aude at the end of the day before heading to Hérault and then Gard at night from Tuesday to Wednesday.

Violent outbursts are also expected in Cévennes, especially around the Mediterranean. In question: the phenomenon of the "marine heat wave" experienced by the Mediterranean, where temperatures rose at night from Tuesday to Wednesday.

Violent outbursts are also expected in Cévennes, especially around the Mediterranean. In question: the phenomenon of "marine heat wave" experienced by the Mediterranean, where temperatures sometimes rose to 6.5 ° C above normal for this season

Warm air coming from the sea, when in contact with cold air located at an altitude, can favor this type of bouts of heavy rain.