July 6, 2022

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Weather alert: Heavy thunderstorms covering 3/4 of the country until Monday evening

Weather alert: Heavy thunderstorms covering 3/4 of the country until Monday evening

by Jill Matriconmeteorologist,

Severe thunderstorms alert until Monday evening

Full live weather forecast over the phone at

3201*

From Sunday 22 May 4:00 pm to Monday 23 May 6:00 pm

continent

The heat wave that hit a large part of France for 10 days ends with a strong stormy deterioration affecting 3/4 of the country between Sunday evening and Monday evening. The most significant downturn will be stormy at the beginning of the year. This severe deterioration is associated with the depression that deepens in the Bay of Biscay and that rises on Sunday evening and night from the southwest to the northeast before reaching the east of the country on Monday. The strong air mass conflict resulting from the passage of this depression between the very hot air coming from Morocco and the cold air coming from the Atlantic Ocean will generate violent phenomena.

note

this sunday

At 12 noon, the temperature increases rapidly in the south with 33 °C recorded in Tenes (43), 32 °C in Maines (48), 30 °C in Bouy (43), Rhodes (12), Agen (47), Saint Etienne (42) and Toulouse (31). No showers have been reported so far in the sections placed on alert, despite the increased fog in the sky.

at 9 amThe first rains fall near the Atlantic in a very mild, rather heavy weather with a temperature of 20 ° C in Bordeaux, Lyon and La Rochelle, 19 ° C in Auch, Bergerac and Toulouse and 18 ° C in Clermont-Ferrand.

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yesterday saturday

At 6 p.m., the heat is brutal in southern France. 30°C has been crossed south of the La Rochelle (17) / Annecy (74) line. Several monthly temperature records have been recorded, such as in Albi (35.1 °C), Montélimar (34 °C), Rhodes (33.1 °C), Aurillac (31.7 °C) and Le Puy (30.8 °C). Feeling reached 40 in the southwest as well as in the lower Rhone valley.

at 15, And the depression responsible for the bad weather is coming close to the coast of Portugal at the level of Lisbon. It brings very hot air with a temperature of 30 to 35 degrees Celsius from the basin of Aquitaine to the Auvergne-Rhône-Alpes. Monthly heat records were broken in Albi (81), Rodez (12), Aurillac (12) and Bagnier de Luchon (31). In Mendeve (64), the temperature reached 36.7 °C.

has evolved

Here is the chronology of this widespread deterioration to 3/4 of the country:

this afternoon, While the heat peaked with temperatures of 32/34°C on average in the south of the country, the first local thunderstorms occurred mainly from Auvergne-Rhône-Alpes to Franche-Comté. Due to the accumulated intense heat, these storms on time are expected to be locally violent.

In the evening and at night, from Sunday to Monday, The real decline will begin with the arrival of the cold front in the Atlantic. It will initially affect a large quarter in the southwest, from New Aquitaine to the Midi-Pyrenees in Poitou. Then this wave of storms will quickly rise towards the Pays de la Loire, the center, the Paris Basin, part of Normandy and the Hautes-de-France which will be on the edge of the most violent storms.

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Monday morning, the strongest thunderstorms will extend from Hauts-de-France to the Massif Central through the Paris Basin and the Center. In the future, the risk of storms will increase again from Lorraine to Alsace to the Jura.

Monday afternoon, From Grand-Est to Bourgogne-France-Comté to Rhône-Alpes, the storms will be reactivated and will likely be strong, especially since the morning will be very heavy with temperatures not lower than 20°C.

It’s Monday night After the disturbances outside our borders are cleared, this special statement can be filed.

The main characteristics of this very large generalized deterioration in 3/4 of the country are:

Extremely high electrical activity and high risk of lightning strikes
– Danger of hail storms that can cause serious damage to crops
– Sudden and heavy rain (up to 30 mm in one hour), which can lead to significant risks of urban runoff, flooding and occasional flooding
Wind gusts during thunderstorms can reach more than 100 km/h, with a risk of vortex formation (hurricanes)

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