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.

N74080411
SNOW AND AVALANCHE BULLETIN FOR HAUTE SAVOIE
(VALID OFF OF OPEN AND MARKED RUNS)
PREPARED ON TUESDAY APRIL 8
FOR WEDNESDAY 9 APRIL

ESTIMATE OF RISK UNTIL WEDNESDAY EVENING:
All massive Haute-Savoie:
Higher than 2000/2300 m: marked risk (level 3),
Lower than 2000/2300 m: limited risk (level 2).

WEATHER OVERVIEW UNTIL WEDNESDAY EVENING:
Time variable and sweet, a few light between clouds but reliefs responsible at times. There are triggered showers Wednesday afternoon. Limit rain / snow towards 2000/2200 m. Quantities in the high mountains 5 / 10 cm.
Isothermal 0 2000 2500 m.
Wind at 2000 m: Southwest 30 kph near the Mont Blanc, 50 km / h on Aravis / Chablais.
Wind at 4000 m: Southwest 70 km / h.

SNOW CONDITIONS:
Quite good. It is fitting the skis to 1200 m in cold northern slopes, 1600 meters in the South.
Quality of snow on Wednesday: on average mountains, the snow increases as a result of redoux and alternating light / clouds, and in the afternoon at the whim of rain. Above 2300/2500 m, there is a layer of 20/30 inches powder in areas sheltered from the wind of Southwest and snow worked in the exposed slopes.

STABILITY OF SNOW COVER:
Still slabs by places and of the purgings with the rise in temperature

Likelihood of spontaneous avalanches departure: redoux accelerates the decline but promotes departures Avalanche in the middle of steep mountains. By mid-day and afternoon, it is expected departure heavy snow surface, but generally not large enough to destabilize a skier. Watch for steep slopes north towards 2000/2300 m where the snow layer recent likely to be destabilized by the sweetness and rain showers in the afternoon. Risk of slab build on steep grassy guidance in South West in the afternoon to 1800/2200m.

The risk of an avalanche: brittle slabs persist in the snow surface fallen since the weekend. They are very rare and becoming stable, generally located near the peaks and sub slope failures, slopes north-west, north and east, higher than 2000/2300 m. Very locally, a group of hikers could trigger a rather large plate, it is better to keep the distances especially steep in the North region.

TREND FOR THURSDAY:
Stationary risk.

Meteo-France updates this newsletter everyday at 16h or sooner if conditions warrant nivométéorologiques.