Avalanche bulletin and weather forecast Haute Savoie

This avalanche translation of the Meteo France avalanche bulletin is produced mainly through an automated translation tool.  Please use it in conjunction with the French bulletin found at the above link.

N74180311
SNOW AND AVALANCHE BULLETIN FOR HAUTE SAVOIE
(VALID OFF OF OPEN AND MARKED RUNS)
PREPARED ON TUESDAY 18 MARCH
FOR WEDNESDAY 19 MARCH

ESTIMATE OF RISK UNTIL WEDNESDAY EVENING:
All massive Haute-Savoie:
Higher than 2000/2200 m: marked risk (level 3)
Lower than 2000/2200 m: limited risk (level 2)

WEATHER OVERVIEW UNTIL WEDNESDAY EVENING:
Sunny in the morning, in charge of cumulus by passages in the afternoon.
Temperatures: -9 then -5 DG to 2000 m, -18 to the Aiguille du Midi.
Isothermal 0 1200 m.
Wind at 2000 m: North 20 km / h.
Wind at 4000 m: Northwest 30/50 km / h.

SNOW CONDITIONS:
Correct above 1500 m, low at low altitude. It is fitting the skis to 1300 m in northern cold in the valleys. In South direction, it's best to climb to 1800 m in the absence of sub-layer to a lower altitude.
Quality of snow on Wednesday:
Full north, the snow remains fairly mild cold and above 2000 m. The sunny slopes, and those who have seen the fog had already risen up to 2400 m. In the high mountains, the powdery snow keep better but it was still worked in areas prone to wind West. Glaciers are better plugged it remains fragile bridges in the lower elevations.

STABILITY OF SNOW COVER: Slabs especially at altitude

Between Sunday and Monday, 20 to 30 cm of snow fell at 1500 m, 40 to 60 cm above 2500 m, accompanied by westerly winds.

More low as 2000/2200 m, the recent snow is in the process of settling, or even already suppressed in the hills taking a little sun. Some small flows occur in the snow surface orientation South East to South-West at the discretion of the sunshine. The slabs are scarce and small, confined to locations cold and shaded. The risk of triggering a slab is mainly confined to areas behind the usual ridges or under dished.

More than 2000/2200 m high, it remains brittle slabs more and thicker. Some have already served only on Tuesday, particularly in Northwest to 2400 m with breaks neighboring 30/50 cm. It should therefore exercise caution, especially in guidance Northwest, North and East where the winds brought accumulations fragile likely to break the passage of a single hiker. Distrust in steep and sub slope failures, especially in areas with low skiées since the snowfall last Wednesday.

TREND FOR THURSDAY: continuation of the settlement, risk down slightly.
Meteo-France updates this newsletter everyday at 16h or sooner if conditions warrant nivométéorologiques.