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Archived

Avalanche Forecast

Jan 24th, 2018–Jan 25th, 2018
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Kananaskis.

A few cms of new snow is incoming overnight but this will not be enough to cause a significant change in danger levels.  A few large avalanches this past week indicate the basal layers may be starting to wake up. 

Confidence

High -

Weather Forecast

Cloudy with sunny periods and isolated flurries.Precipitation: Trace.Alpine temperature: High -6 °C.Ridge wind west: 30 km/h gusting to 55 km/h.Freezing level: 1500 metres.

Avalanche Summary

No new avalanche activity was observed over the past 24hrs.  Visibility was limited.

Snowpack Summary

Light flurries were falling throuhgout the day on Wednesday but there was very little accumulations by 1600.  Not much is changing out there right now.  Widespread windslabs in the alpine should be expected and these windslabs even extend down into treeline in some areas.  At treeline and below there are a few surface hoar layers in the top 1m of the snowpack that skiers need to be aware of.  Being down less than 1m, they are within the realm of skier triggerring.  Use caution in unskied areas, and in steeper or unsupported slopes.  THe Nov crust is also a basal layer that we are starting to see sporadic activity on these days.  Treat large alpine features with caution.

Avalanche Problems

Wind Slabs

Wind slabs are everywhere in the Alpine and at Treeline, except on windward aspects. Several recent avalanches have occurred associated with this problem.
Avoid freshly wind loaded features.Avoid steep lee and cross-loaded slopesBe careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Persistent Slabs

Numerous buried weak layers are causing some concern at Treeline. Avalanche activity observed in the past 2 days initiated in the upper snowpack and then steeped down to the persistent slabs.
Avoid convex rolls at and below treeline where buried surface hoar may be preserved.Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3