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.

N74100311
SNOW AND AVALANCHE BULLETIN FOR HAUTE SAVOIE
(VALID OUT OF OPEN AND MARKED RUNS)
PREPARED ON MONDAY 10 MARCH
FOR TUESDAY 11 MARCH
ESTIMATE OF RISK UNTIL TUESDAY EVENING:
All massive Haute-Savoie: Below 2000 m: limited risk (level 2)
Above 2000 m: limited risk (level 2) that evolves marked risk (level 3) if the snowfall is continuing well Tuesday.

WEATHER OVERVIEW UNTIL TUESDAY EVENING:
From snow windy during the night when giving 1200/1300 m 15/20 cm-1500 m. Tuesday Cloudy with irregular snowfall since 1000 m in the morning and 1200 m in the afternoon (5 / 10 cm additional possible). The wind was blowing hard enough.

Isothermal 0 DG: 1500 m during the night and then 1300 m Tuesday.
Wind at 2000 m: west / southwest 60 to 40 km / h. Wind at 4000 m: west and then northwest 100 km/h.

SNOW CONDITIONS:
Episodes of bad weather have not been many important this winter, the snow cover is low for a mid-March. The snowfall expected by Tuesday will improve a little snow, but the sub-layer is often absent at low altitude and up to 1800 m south. A high-altitude glaciers are moderately clogged with cracks already very apparent in-3000 m.

Quality of snow for Tuesday:
We will have fresh snow above 1500 m, or powdery housed in the corners, often blown or cardboard. Areas exposed to the wind well as towards the peaks and bumps will be even dégarnies of snow and therefore hard snow.

STABILITY OF SNOW COVER: Some fragile slabs on fresh snow expected.

The risk of avalanches Tuesday relate primarily to the possibility of a slab with the passage of a skier. This risk will be present but is localized. These potential avalanches remain generally modest in size, but a bit more locally heavy in the afternoon when snowfall more intense. It will be guard areas where snow was blown could be deposited and thus form a slabs to vent a little harsh, as towards the peaks or behind a break in slope or a big bump.
On the other hand, in slopes directed primarily Northeast, North and Northwest above 2000 m, the risk of a hard or brittle slab could be slightly higher due to the presence of localized sub - layers, but it will remain fragile fairly localized but sometimes counter-well below peaks.

As for the risk of natural avalanches, it will be limited to a few purges in many steep slopes in the form of small avalanches of snow plus or minus dusters carrying only fresh snow.

TREND LATER RISK: The danger will increase on Tuesday evening and the day Wednesday, wet snow avalanches with rain below 2000 m, brittle slabs at higher altitudes.
Meteo-France updates this newsletter everyday at 16h or sooner if conditions warrant nivométéorologiques.