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.

N74130311
SNOW AND AVALANCHE BULLETIN FOR HAUTE SAVOIE
(VALID OUT OF OPEN AND MARKED RUNS)
PREPARED ON THURSDAY 13 MARCH
FOR FRIDAY 14 MARCH
ESTIMATE OF RISK UNTIL FRIDAY EVENING:
All massive Haute-Savoie: Risk limited (a good level 2) ... That should not be overlooked.

WEATHER OVERVIEW UNTIL FRIDAY EVENING:
Skies partly cloudy tonight still allowing a little subjected.
Good weather Friday, some residual clouds in the morning.

Isothermal 0 2000 2400 m. Isothermal -10 DG: 3900 and 4200 m.
Wind at 2000 m: Slow. Wind at 4000 m: North-west, 70 and 60 km / h.

SNOW CONDITIONS:
The lack of snow is evident below 2000 m, the deficit is about 50 cm from the norm in a mid-March. Above 2200 m, the snow was much improved with the recent snowfalls. You can still put on skis since about 1200 m in northern slopes around 1700/1800 m in the south.

Quality of snow for Friday:
More low as 1800 to 2000 m, on skiera on an old snow wetted, regelée and crusty low in the early morning while the sometimes topped with a bit of snow. Snow ramollira surface during the day in the sunny slopes and low levels as well wet or rotten deep in the hills and the sun.
Between 2000 and 2500 m, recency snow is dense and not really snow, slightly south croûtée in the morning. Snow humidifies itself surface to the sun over several hours.
Above 2500 m, the thickness of snow is important, often blown sometimes duster. Small surface wetting day in the slopes more or less south.

STABILITY OF SNOW COVER:
Some wet snow avalanches in the sun, fewer slabs in altitude.

Below 2000 m, the risk of avalanche will be quite low in the early morning light through the night regel. Then quickly with the sun, could cast some fear or natural avalanches and heavy wet snow in very steep slopes sunny. The passage of a skier could facilitate the departure of this type of avalanche cutting a slope of wet snow well.

Above 2000 m, snow recent cup is fairly quickly by stabilizing gradually. It will nevertheless still be cautious because some fragile slabs may linger here and there, rather little in the sunny slopes or near peak or large slope failures. These slabs will be possible a few, but they could take a volume of locally important enough snow. Possibility also a few wind slabs at high altitudes.
With redoux to-2000 m, small avalanches surface wet snow will also occur in sunny steep slopes, especially near rocky areas, casting surface that could take a little more volume collecting wet snow at lower altitudes when the configuration of the land is favorable.

TREND LATER RISK: Saturday, the risk of avalanches will be wet up with the spring time, the risk of slabs slacken.
Sunday, the risk of avalanche is on the rise globally due to the bad weather.
Meteo-France updates this newsletter everyday at 16h or sooner if conditions warrant nivométéorologiques.