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Avalanche danger forecast for
Thursday 1/17/2019



AVALANCHE DANGER  

the wind loadsin the north are bonding
possible new small accumulations in the west of the region
little snow in the southeast

Thursday 1/17/2019
  
 


2100 m

The avalanche problems are the wind-drifted snow.
The avalanche danger is 3-considerable at the north-west and north
. The danger is upper in the border areas, but it rapidly falls away towards the south-east.
Off-piste and hiking activities:
From the afternoon in the west of the region (from Valgrisenche to Val Veny) new small soft accumulations are being formed, especially above 2300 m near ridges and passes.
The old wind loads are clearly visible: often they have filled basins and canyons, but they are also present on open slopes. They are not always avoidable because are big, but they are undergoing with slowly bonding. The passage of one or more skiers can cause the triggering of superficial slabs both soft (easier to trigger but smaller), and hard (more difficult to trigger, but sometimes also large). Release all the recent snow driftned (50-120 cm in the north border, 40-60 cm a little more distant) but sometimes even inside the old snow. Whoom noises are a warning sign. The critical points are the areas between low to high thikness of snow.
Beware of possible collapses of cornices at high altitude.
The avalanche danger is 2-moderate in the south and east of the region, 1-weak in the south-east.
The wind loads are much smaller in terms of thickness and number; it is easier to get around them and any slab avalanches are smaller.
Spontaneous avalanche activity limited to sluffs or small superficial slabs. 
Especially going to the south-east remain the danger of slipping or falling on hard and smooth crusts.


AVALANCHE DANGER TREND  Friday 18:    Saturday 19:  

steady


GENERAL CONDITION
updated to 1/16/2019
 

Fresh snow on Sunday and Monday, already partially settled
Difficult to reported right quantities of fresh snow because the snow has been drifted by very strong north-western winds. Greater quantities of snow along the northern border ridges between Mont Blanc and Matterhorn: 60-80 cm at 2000 m. Moving to the south-east the quantities drop from 20-30 up to a few cm.

Snowpack
Stability improved thanks to today's increasing temperature (sun + 0t ° 2700 m) and to the weight of the most big wind loads.
The problem is superficial and linked to new wind loads that can slip on the old and hard snowpack or, more deep, on a layer of faceted crystals.

Snowcover
Snow is absent in the valley bottom and little in the middle mountain. Good snowfall only above 2200-2400 m, but the snowpack is not homogeneous because it is strongly driftned by wind with eroded areas even up to the ground.

Avalanches in the last 24 hours
Many sluffs and slab avalanches of medium sizem aminly at est aspects, but in number and size smaller than expected.
In the north of the region triggering on the north aspect of a large and thick slab.

Skiing conditions: bad to good, frequently variable in few meters.
It is possible to wear the skis above 1800-2300 m, better to choose skitours with roads that lead at higher altitude.
In the northwest, over these levels, you ski on a layer of new cold snow beautifull to skiing.
Going towards the south-east of the region you can ski on crusts of various kinds both by wind and by refreezing, hard and irregular (Useful crampons or ski crampons).

Weather forecast

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° 50 issued on 1/16/2019 at 00:00 p.m.
Valid outside the ski runs controlled and managed by the ski resorts.
For an accurate interpretation of the Bulletin, a specific guide is available at