While snow is falling in Île-de-France and flakes are expected north of the Rhône, Haute-Savoie is placed on orange wind vigilance and the Mont-Blanc massif in avalanche risk of 4 out of 5 by Météo-France.
These vigilances apply this Thursday, November 21 from noonalso with two yellow warnings for rain-flood and snow-ice, because snow could fall heavily in the Alps.
Haute-Savoie: wind up to 150 km/h on the highest points of the Alps
He is expected in the plain un wind reaching 90 to 100/110 km/h in gusts and can reach locally up to 120 km/h. The wind will be stronger on the reliefs, being able to reach more than 150 km/h on the highest points of the Alps.
This phenomenon is due to the arrival on the territory of the storm Caetanowhich will cross the region this Thursday afternoon and until the middle of next night.
A high avalanche risk on the Mont-Blanc massif in Haute-Savoie
Regarding the avalanche risks in the Mont-Blanc massifspontaneous departures occur above 1,800/2,000 meters. As snow falls, the size of avalanches increases (size 2 and 3). Below 1,800/2,000 meters, avalanches are also possible, but of more modest size (size 1 and rarely size 2).
The prefecture of Haute-Savoie calls for a “extreme vigilance when practicing all mountain activities and mainly ski or snowshoe hikes, whatever your level. Even if shovels, probes, avalanche victim detectors are essential, these tools in no way protect against the risk avalanche”.
Météo France keeps its map dedicated to the risk of avalanches in the Alps up to date, which can be consulted here.
