six departments on orange alert for violent winds, snow-ice and avalanches | EUROtoday

HAS the west of the nation, Manche, Ille-et-Vilaine and Côtes-d’Armor are, on Sunday December 22, positioned on orange alert for winds. “This episode occurs in a context of stormy showers accompanied by sleet. […] These gusts could reach 120 km/h, or even 130 km/h locally on the coast, and around 100 km/h inland,” warns Météo-France. The service locations, on the mountain facet, Savoie, Haute-Savoie and Isère in orange for snow-ice and avalanches. Ain joined its neighboring departments within the morning, Sunday.

A double vigilance which is able to lengthen all through the day of Monday. The alert could possibly be prolonged to the Jura from this Sunday afternoon, due to “snowfall” which “also concerns the Jura massif with a rain-snow limit which drops to the lower mountains (500 meters approximately)”.

Access to stations troublesome

This snow, which is anticipated to descend to 400-600 meters, may “disrupt access to high altitude resorts”. “Over the entire episode, we can reach 40 to 60 centimeters of snow in 48 hours around 1,000 meters of altitude and around a meter of snow above 1,500 meters,” estimates Météo-France. .

Concerning avalanches, “because the heavy snowfall anticipated within the Northern Alps accumulates, exceptional avalanche exercise will happen. The anticipated avalanche exercise happens on common each 3 to eight years relying on the massifs involved.

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Answer

“Large avalanches will be triggered as snow falls during the night from Sunday to Monday and then during the day on Monday. These avalanches could reach exposed mountain roads as well as high-altitude infrastructure,” warns Météo-France. Another rationalization for these avalanche dangers: “The contemporary snow may even be deposited on a snowpack that has not but stabilized following earlier snowfalls. »

The massifs involved are Chablais, Aravis, Mont-Blanc (Haute-Savoie), Haute Tarentaise, Beaufortain, Vanoise, Maurienne (Savoie), Belledonne, Grandes Rousses and Oisans (Isère).