Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Apr 3rd, 2017–Apr 4th, 2017
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Danger levels will increase with direct sunlight and with warming throughout the day. Pay attention to the large cornices overhead, and don't forget that low elevation crusts may have broken down by mid-day.

Weather Forecast

Sunny with cloudy periods today with an alpine high of -7*C. Freezing levels will rise to 1300m, but it will certainly feel warmer in the direct sun. Winds will remain light from the west. Tuesday will see similar conditions but slightly higher temps.

Snowpack Summary

Storm snow in the alpine totaled 20-30cm over the weekend. Moderate to strong SW winds have redistributed it and formed wind slabs in alpine lee features. Cold overnight temp's have formed a supportive crust below tree-line. Cornices are big in the alpine and if they fail, they may trigger one of the multiple crusts lingering in the upper snowpack.

Avalanche Summary

One notable cornice-triggered size 3 avalanche from Railroad Gunners made it down to the fan. Several skier accidental and skier cut size 1.5's were reported from Bonney Moraines, N Cheops, and Balu Ridge descending into 8812 bowl. These were reported to be 20-30cm deep, running on the storm interface on N aspects and on a crust on SE aspects.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

The weekend's storm snow has been redistributed into widespread wind slabs in the alpine and open tree-line features. These slabs were reactive to light loads yesterday and will need time to bond to the underlying interface.
Use caution in lee areas. Recent wind loading has created wind slabs.Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

The large cornices hanging on the ridge-lines are fragile and they pack a monster punch if they fail on the slopes below. These massive triggers have the potential to trigger deeper layers and cause very large avalanches.
Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.Give cornices a wide berth when travelling on or below ridges.

Aspects: North, North East, East, South East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3