Archived

Avalanche Forecast

Feb 16th, 2015–Feb 17th, 2015

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

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

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

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

http://www.pc.gc.ca/apps/scond/Cond_E.asp?oID=19299&oPark=100092The beautiful weather and easy travel should be enjoyed, but remember that the variable snowpack depths are not a reliable bridge for the rotten snowpack base.

Weather Forecast

Overnight cooler temperatures are expected for the next several days, which will provide a stabilizing effect to the snowpack surface. No significant precipitation is expected, and sunny conditions will provide strong solar radiation to south and southwest steeper slopes.

Snowpack Summary

Up to 50cm of more settled snow and several different crusts to near treeline elevations provide a lot of support and good travel in the upper snowpack. These firmer upper layers are resting on 50-75cm of weak, poorly bonded faceted snow crystals. Large triggers like small avalanches or cornice drops will easily collapse the upper bridging layers.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Avalanche Problems

Deep Persistent Slabs

Cornice failures or skier travel in shallow snowpack areas are likely ways to trigger this deep weakness in the snowpack.

Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.Avoid shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4