Sunday, May 22 from 4:00 pm to 12:00 noon on Monday, May 23rd.

Situation

The heat wave, which will permanently affect a large part of France, will end with a strong storm affecting 3/4 of the country between Sunday evening and Monday afternoon. The epicenter was reported below the Pacific Ocean floor, however; no tsunami alert was issued. The collision of the air mass that occurs when this depression between the very hot air rising from Morocco and the cold air coming from the Atlantic passes will create violent phenomena.

Observation

Saturday

At 6 o’clock the heat is suppressed in the south of France. Exceeds 30 ° C south of a La Rochelle (17) / Annecy (74) line. Several monthly heat records were recorded, including Albie (35.1 ° C), Montelimer (34 ° C), Rhodes (33.1 C), Aurillac (31.7 ° C) and Le Puy (30 .8 ° C). The sentiment reached 40 in the southwestern region and the lower Rhne Valley.

3 p.m., The depression caused by the impending bad weather is approaching the Portuguese coast at the Lisbon level. It brings very hot air from the Aquitaine Basin to the Auvergne-Rh -ne-Alps at 30 to 35 degrees Celsius. He broke the monthly heat records of Albie (81), Rhodes (12), Aurillock (12) and Bugneres-de-Luchen (31). The temperature in Mendeleev (64) reached 36.7 degrees Celsius.

Evolution

Here is a chronology of this significant widespread decline to 3/4 of the country:

Sunday morning, South weather is heavy and cloudy with a low of 20 degrees Celsius in Bordeaux, Toulouse and Lyon.

Sunday afternoon, When the average temperature in the southern part of the country reached an average of 32/34 degrees Celsius, the first localized hurricane formed, mainly from the Overgrone-Rh -ne-Alps to the Franെois-Comte. Due to the intense heat, these hurricanes are expected to become locally violent in a timely manner.

Sunday and Monday evenings and nights, The real devastation will begin with the arrival of the Atlantic Cold Front. It will initially affect the large south-western footpath from New Aquitaine to the Midi-Pyrenees in Poitou. Then this wave of storms will rise rapidly into the Pa ഡിs de la Louvre, the center, the Paris Basin, part of Normandy, and the Houtes-de-France, which will be alert through our services at 9am on Sunday. These storms can be accompanied by heavy rainfall and locally hailstorms and strong winds.

During the day on MondayLightning will move east, from the Grand-Est to the Bourgogne-France-Comté to the Rhône-Alpes, and is likely to be violent, especially in the morning with a minimum of 20 C.

Monday night This special notice will be withdrawn after we have cleared the disturbances outside our borders.

The main features of this generalization to 3/4 of the country are:

– Very high electrical performance
– Possibility of hailstorm causing crop damage
– Rapid and intense rainfall, which can cause occasional flooding and flooding
– Winds that can reach speeds of up to 100 km / h during thunderstorms

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