Weather report. A gale in Normandy this weekend, followed by a cold snap next week

See my news
Follow La Presse de la Manche

The weather had become a little calmer in Normandy after the passage of two storms, one snowy (Caetano), the other windy (Bert), a little over a week ago. It could be agitated again in the coming days.

Towards winter weather conditions

To the southwest of a large low pressure system located over the North Atlantic, a small area of ​​low atmospheric pressure will form at the end of the week. So far, nothing abnormal since in weather conditions, this situation occurs regularly.

However, this small anomaly will be taken up in the jet stream – a very powerful upper-altitude wind axis circulating regularly above our heads (9 kilometers away, at the limits of the troposphere) – and cause it to deepen.

110 to 120 km/h on the coasts

Digging also implies a lower atmospheric pressure at its center and an acceleration of the winds around it. As is often the case with the birth of storms at our latitudes.

This depressionstill poorly understood by weather models, will affect Western Europe this weekend, the coasts of the Some and the nord from France between Friday night and Saturday afternoon.

If there are several uncertainties regarding its trajectory and its intensity, the trend is towards a passage from its center following a corridor going from the south of Ireland to the center of the United Kingdom, losing around twenty hectopascals in 36 hours.

A gust of wind on Saturday

The strongest winds being located to the south of it, the north and northwest of France will be the sectors most affected by the violent gusts, for the moment estimated at the threshold of the gale inland, probably the storm on the coasts.

“On Saturday, a gale associated with a rainy disturbance will impact the country, particularly the northwest,” indicates Météo France, three days before the announced blow.

In Normandy, the Cotentin will once again be the sector most concerned. From the middle of the night, the squalls in the western sector will reach 80 to 90 km/h, reaching 100 km/h at dawn.

Early in the morningwhile the depression will begin to evacuate towards the North Sea, values ​​of 110 to 120 km/h, this time from the northwest sector, are probable until the end of the afternoon on the coast west and north of the Channel coast.

Behind this depression, an imposing anticyclonic ridge will rise over the Atlantic and block the way for the usual disturbances bringing a certain candy In France. While they will push back in wanting to resume the classic west-east circulation, they will be talking about high pressures over England and Scandinavia. Thus, the flow will switch to the northern sector, then the northeast, next week.

Frosts in the morning

THE temperaturesminimum and maximum, will gradually decrease over the days. In the middle and end of the week, with generally dry weather, punctuated by a few showers, frosts will be frequent in the morning, accompanied by an unpleasant northerly feeling. The mercury will often plateau around 5 °C during the day.

Follow all the news from your favorite cities and media by subscribing to Mon Actu.