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Archived

Avalanche Forecast

Feb 26th, 2016–Feb 27th, 2016
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

Keep an eye on the weak layers that are still a concern in isolated areas. Dig down to evaluate these layers before trusting  the snowpack especially in sheltered areas around treeline.

Weather Forecast

Following warm temperatures and crust formation to treeline on solar aspects Friday, a cold front that will pass overnight will bring cooling, clouds, and up to 5cm of snow. While daytime freezing levels may approach 2000m Saturday, continued cooling, cloud and a bit of snow can be expected into Sunday as a second cold front reaches the divide. 

Snowpack Summary

Suncrust exists on steep S and W aspects. Otherwise, 20-30 cm of low density snow overlies a well settled mid-pack. The Feb 11 surface hoar can be found down 50-60 cm in isolated locations around treeline and produces moderate test results. The Jan 6th layer (down 80-120 cm) is gaining strength and producing hard to no results.

Avalanche Summary

Loose wet snow avalanches up to size 1.5 observed on Wednesday through Friday as a result of solar heating, otherwise no recent slab avalanches reported. Note that many recent slab avalanches were reported in the last week in the neighboring Banff, Yoho & Kootenay bulletin region.

Confidence

Due to the number of field observations

Avalanche Problems

Persistent Slabs

We are tracking 2 weak layers in the upper 120 cm of the snowpack (Jan 6 and Feb 11 surface hoar). Their strength has improved, and they are sometimes hard to find. We consider these to be healing, but dig down and look for yourself.

  • Dig down to find and test weak layers before committing to a line.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3