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Avalanche danger forecast for
Friday 5/7/2021



AVALANCHE DANGER  

Especially in the west of the Region, new snow at high altitude and strong winds,áincreasing danger.

Friday 5/7/2021
  

>2400-2500 m


>2300-2400 m

Bulletin issued by few informations

Main avalanche problems: wind-drifted snow and new snow.
An intense disturbance is expected until Friday morning, especially in the western area of the Valley. The most consistent accumulations will occur above 2400-2500 m, altitude from where strong or very strong westerly winds can create many wind loads. A resumption of avalanche activity is expected due to wind and fresh snow, especially along the border ridge with France, where there will be more new snow.
Moving towards the SE, the quantities of new snow drop, as do the size and number of expected avalanches.

Natural avalanches
Mainly in the west: over 2500 m possible slabs, in some cases even very large and able to reach the valley floor along the usual gullies. Possible loose surface avalanches, especially of medium size, on very steep slopes and from rock bars at all aspects.

Triggered avalanches
Especially in the western areas of the Valley and as the altitude rises, the slabs increase in size and diffusion. These are sensitive to the passage of the single skier already on steep slopes, close to ridges, hills or changes in slope above 2500 m. It is also possible to trigger avalanches of fresh wet snow, which can start from under the skis at lower altitudes.


AVALANCHE DANGER TREND  Saturday 8:    Sunday 9:  

Decreasing on Saturday morning, then increasing with the arrival of the sun and with the rise in temperatures. Steady Sunday.


GENERAL CONDITION
updated to 5/6/2021
  Please note: in the closed ski-resorts areas slopes are not managed and must therefore be considered as potentially avalanche terrain

Recent and new snow
In the night between Wednesday and Thursday, a snowfall mainly affected the western areas, with 15-20 cm of snow above 2200-2500 m. Above 2800-3000 m, the quantities were slightly higher. Moving east, the quantities of fresh snow were significantly less.
Accumulations of fresh / recent snow are mostly found along the north-west border ridge, above 2500-2700 m,áwhere currently 50-60 cm of loose snow can be found, often already altered by very strong winds of yesterday and today.

Snowcover
The snow cover is uneven and lower than the average for the period. It is scarce in the mid-mountain and southern slopes, best in the north-west of the region. Bumps and ridges are often eroded, while channels and hollows have more snow.For ski touring in the south the snow is sufficiently continuous above 2200-2400 m, in the north above 1900-2100 m.

Snowpack stability
The snowpack is isothermal and still has a superficial instability between the recent snow and the old one, moreover it is humidified in all its thickness below 2500-2700 m, even if it is slowly drying thanks to the thermal drop. There are unstable snow slabs at high altitudes, especially close to the ridges and in the canals.

Avalanches reported last 48h
Today poor visibility.áNo avalanche reported.
Conditions for skiing
Dry loose snow at high altitudes. Surface and central layers of the snowpack are wet up to 2500 m.

Weather forecast

SNOW AND WEATHER CONDITIONS OF THE 7 LAST DAYS  
Monte Bianco Gran San Bernardo Gran Paradiso Monte Rosa

EUROPEAN AVALANCHE DANGER SCALE Rising avalanche danger during the day
 
5
VERY HIGH
 
4
HIGH
 
3
CONSIDERABLE
 
2
MODERATE
 
1
LOW

TYPICAL AVALANCHE PROBLEMS   CRITICAL LOCATIONS
NEW SNOW
WIND-DRIFTED SNOW
PERSISTENT WEAK
LAYERS
WET SNOW
GLIDING SNOW
IN BLACK: THE MORE CRITICAL ASPECTS AND ELEVATIONS
Snow and avalanche bulletin n░ 159 issued on 5/6/2021 at 00:00 p.m.
Valid outside the ski runs controlled and managed by the ski resorts.
For an accurate interpretation of the Bulletin, go here