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

Avalanche Forecast

Jan 11th, 2020–Jan 12th, 2020
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
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

Regions: Glacier.

Natural activity is slowing but human triggered avalanches are still possible

Weather Forecast

Flurries today accumulating to 5cm of snowfall with light winds from the SW. Freezing level 800m and an alpine high of -9 today. Tomorrow trace snow and falling temperatures with light S winds. Monday temperatures will drop below -20 with flurries.

Snowpack Summary

The recent snow has settled to around 80cm over the Dec 27th surface hoar or crust depending on aspect. Triggerable interfaces exist within that 80cm Including a thin crust 10-20cm above the Dec 27th layer. The mid and lower snowpack have been gaining strength but the load over early season crusts has increased significantly this week.

Avalanche Summary

The snowpack is still adjusting to the new load. The natural avalanche cycle has slowed with less activity observed yesterday. Numerous natural and explosive triggered avalanches to size 3.5 this week.

Confidence

Avalanche Problems

Storm Slabs

Moderate to strong SW winds during the snowfall have loaded alpine and treeline lees. Slabs may be more reactive in these areas.

  • Use conservative route selection, choose moderate angled and supported terrain with low consequence.
  • Watch for shooting cracks or stiffer feeling snow. Avoid areas that appear wind loaded.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3

Persistent Slabs

Storm slabs have the potential to step down to the December 27th surface hoar down 70-90cm.

  • If triggered the storm slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4