Weather Alert: Depression Renata: gale to the north this Monday, up to 110 km/h

From Monday April 15 at 2:00 p.m. to Monday April 15 at 9:00 p.m.

Situation

After an exceptionally hot weekend, the weather changes radically this Monday. Indeed, a depression, named Renata, is deepening off the coast of Scotland this Sunday evening and plunging towards the Benelux on Monday, boosted by a powerful jet stream at nearly 300 km/h which passes just above the northern regions. of the Seine.

In this context, a very active disturbance is sweeping the regions extending from the Normandy coasts and Hauts-de-France to the Grand Est. As it passes between Monday 9 a.m. and Monday 9 p.m., it causes heavy, occasionally stormy showers accompanied by a risk of hail, but above all a brief and powerful windy spell.

Gusts reach 100 to 110 km/h in Hauts-de-France as well as on the Normandy coasts. In the north of the Paris basin and the Grand-Est, gusts can reach 80 to 90 km/h, up to 100 km/h on the Champagne and Lorraine plateaus, as well as on the Vosges massif.

Observation

This Monday

At 14h, the gale is in full swing in Hauts-de-France with up to 124 km/h measured at Boulogne-sur-mer (Pas-de-Calais), 122 km/h at Cap Gris-Nez (Pas-de-Calais). -Calais) and 114 km/h in Fécamp. The cold front associated with this gale is currently progressing inland towards the east and has just passed over the Lille metropolitan area.

At 12the gusts strengthen in Hauts-de-France with 96 km/h in Cap-Gris-Nez (Pas-de-Calais) and 100 km/h in Fécamp (Seine-Maritime).

At 8 o’clock, the wind is slowly strengthening over Pas-de-Calais with gusts of 70 km/h in Boulogne and up to 80 km/h in Cap-Gris-Nez.

Evolution

Here is the chronology of this gale

Between 2 and 5 p.m., the disturbance concerns the north of the Paris region up to the Ardennes with gusts of 70 to 90 km/h, up to 100 km/h maximum from Picardy to the Ardennes. At the back, the temperature drops several degrees.

Between 5 and 9 p.m., this active cold front slides towards Champagne, northern Lorraine then the Vosges and finally the Bas-Rhin, giving gusts of 80 to 90 km/h occasionally. The wind is still blowing strongly under the train towards the Picardy coast at 100 km/h as well as on the Vosges ridges.

From 9 p.m. and the evacuation of the cold front, the wind quickly weakens and this special release will be lifted.

List of departments concerned