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

Avalanche Forecast

Feb 15th, 2021–Feb 16th, 2021
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
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: Jasper.

There has been a decrease in natural avalanche activity in the past 2 days, yet there is a concern that human triggered avalanches are still possible in shallow areas where the snowpack is facetted and weak.

Weather Forecast

We will return to seasonal normals with alpine temperatures between -17C and -10C for the next few days. A mix of sun and cloud with trace amounts of snow forecasted for Tuesday. Winds expected to be light from the southwest to northwest.

Snowpack Summary

The upper snowpack has facetted from the recent cold temperatures and overlies a supportive mid-pack, except in shallow areas where the entire snowpack is weak and facetted. Variable wind effect in the alpine and at tree line.

Avalanche Summary

One sz 3 avalanche (wind slab) observed from extreme, alpine, north aspect terrain.  No other avalanches observed.

Confidence

Avalanche Problems

Wind Slabs

Recent wind slab activity has been noted in high elevation wind loaded features. It seems to require a large trigger such as a cornice failure to initiate or potentially a shallow location where a skiers weight may be enough.

  • Travel on ridgetops to avoid wind slabs on slopes below.
  • Give cornices a wide berth when travelling on or below ridges.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Loose Dry

Isolated, sheltered features that have not been impacted by winds are susceptible to sluffing and loose dry avalanches. Ice climbers be aware of these features.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2