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

Avalanche Forecast

Feb 2nd, 2017–Feb 3rd, 2017
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Little Yoho.

The snowpack is weak in many Little Yoho locations, and large avalanches are still possible. If there is a slab overlying facets, its suspect.

Weather Forecast

Lows of -25c and highs of -11C for Friday with light SW wind. Expect increasing cloud through the day and flurries to begin in the evening. Currently a big storm is in the forecast for this weekend, but models are not in agreement and the brunt may track to the South of us... stay tuned.

Snowpack Summary

Wind slabs formed from strong winds this week. A generally weak snowpack exists below 2000-2200m. At 2000m, there is generally 140 cm of snow, with the Jan 17 surface hoar layer down 30cm. In the mid-pack, the Dec facets are around 20cm thick, and near the ground some weak facets sit just below an ice crust. More solid snowpacks exist above 2200m.

Avalanche Summary

There was a small avalanche cycle last weekend from strong winds. The activity has slowed significantly due to decreased winds and cooling temperatures. No avalanches reported Thursday.

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Persistent Slabs

The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Increased slab development overlying these layers is likely with recent winds.

  • Dig down to find and test weak layers before committing to a line.
  • Use conservative route selection, choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3