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Archived

Avalanche Forecast

Apr 23rd, 2015–Apr 24th, 2015
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Weather Forecast

Cooler temperatures with a few snow flurries over the weekend before warmer weather pushes back in next week.

Snowpack Summary

Warm temps have softened up the snow surface into spring conditions. At treeline, lee aspects have a series of windslabs sandwiched with thin weaknesses in the upper snowpack. A strong midpack bridges over weak basal facets on Northerly aspects at treeline and above.

Avalanche Summary

No new avalanches observed or reported today. One size 3 slab with a 2m crown was observed on Indian Ridge on Tuesday. Time to put full depth avalanches on the radar.

Confidence

Avalanche Problems

Cornices

Cornices are large and can collapse anytime. This is a trigger that could initiate a full depth avalanche. Pay attention to what is above and avoid cornice exposed slopes.
Give cornices a wide berth when travelling on or below ridges.Do not travel on slopes that are exposed to cornices overhead.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

Time to put full depth avalanches on the radar. The potential for this is related to extent of overnight recovery, large triggers such as a cornice failure, and daytime warming. This increases as spring conditions progress.
Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.Be aware of the potential for large, deep avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3