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

Avalanche Forecast

Jan 22nd, 2013–Jan 23rd, 2013
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
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Glacier.

Watch your overhead hazards and for signs of instability with day time heating. North aspects are still affected by cornices above in the sun.

Weather Forecast

The high pressure ridge will remain for today bringing mostly clear skies and a temperature inversion. A pacific frontal system is to arrive by tomorrow morning bringing light to moderate precipitation into Thursday.

Snowpack Summary

Settled upper snow pack with 5 cm of ski penetration. Sun crust on steep solar aspects. Snow pack is well settled. Profile on Avalanche Crest, 2450m, W asp, 42deg, 194cm snow depth, produced moderate to hard resistant planar results down 18, 27 and 47cm. The Jan 4 layer was down 47cm. On Bonney Glacier 2350m, 356cm depth, Jan 4 layer is down 92cm.

Avalanche Summary

1 natural loose size 1.5 west of the summit on a south aspect

Confidence

Intensity of incoming weather systems is uncertain on Wednesday

Avalanche Problems

Loose Dry

Mild alpine temperatures and sunshine will weaken the upper snowpack on steep solar aspects. Moist snow is a good indicator of this.  Watch for overhead hazards like cornices and rocky outcroppings where loose avalanches originate.
Pay attention to overhead hazards like cornices.

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

Elevations: Alpine.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Wind Slabs

Evidence of wind slabs still lingers in the alpine. Caution at ridge crests and on cross loaded features.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Persistent Slabs

A persistent layer down ~40cm remains a concern. It has been most reactive on steep, solar aspects.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3