Stormy Week Ahead: Weather News and Updates

2023-06-19 16:43:56

News Weather

Like this particularly stormy Sunday from the southwest to the northeast, your week promises to be still rough until Friday, with a peak in stormy activity expected between Wednesday evening and Thursday.

Flooded streets, impressive gusts, strong electrical activity, Sunday was very intense in terms of stormy activity and disrupted the weekend returns of many motorists, and many events that were held outdoors. The day was also the second most struck since the beginning of the year.

The general situation is blocked until Thursday afternoon. A depression present on the near Atlantic, and rather anticyclonic conditions on the south-east of the country and Italy, bring a rapid flow of cyclonic southwesterly (driven by the depression) on the country. The very warm air in the lower layers of the atmosphere, as well as the cooler air at altitude, and the presence of a strong southwesterly jet current (strong wind at altitude) are conducive to development. new strong thunderstorms.

On Monday, thunderstorms broke out mainly in the central regions and headed northeast in the evening. Be vigilant when leaving work in particular, with a high risk of runoff, the roads will sometimes be flooded. A special press release is in progress for this situation..

For Tuesday, it is on the Atlantic arc and particularly in the southwest (Gironde, Landes, Pyrénées-Atlantiques) that the stormy activity will start at the end of the morning with sometimes heavy showers. The storms will move quickly towards the northern regions (Hauts-de-France). In the evening, they will be marked on the western slopes of the central massif mainly and in the south-west. They will be locally accompanied by hail. The perimeter of the Gulf of Lion will remain aside.

Wednesdaythe degradation present in the southwest will resume activity in the morning and move up towards the northeast of the country during the morning, ending the heat episode in the eastern regions.

Finally, on the night of Wednesday to Thursday, a new, more organized degradation will rise from the southwest to the northeast, affecting the eastern regions quite strongly, in particular Bourgogne-Franche-Comté and the Grand-Est. It will come to block on the reliefs of the Vosges, Jura and Alps in the evening under the effect of a new anticyclonic pressure, which will put an end to this stormy episode.

The expected accumulations are of the order of 20 to 40 mm, locally more under the biggest storms. Also note that the risk of hail will be particularly high. So be extra vigilant and do not hesitate to follow our detailed forecasts and our special press release for more details and details on the chronology and the risks associated with this type of event.

From Thursday afternoon, the conditions will be better on the western side of the country, the effects of the high pressure on the near Atlantic will be felt with the return of fine clearings, but also the setting up of the tramontane and the mistral in their area which will blow between 50 and 70 km/h which could increase the risk of fires.

Your week-end promises to be more clement with dry and sunny weather for all.