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Archived

Avalanche Forecast

Mar 29th, 2013–Mar 30th, 2013
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
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
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

Regions: Kananaskis.

Look for increasing Avalanche Danger beyond current ratings as daytime temperatures rise on solar exposed slopes.  Be especially wary of overhead terrain during travels - cornices and loose, wet slides area capable of running long distances.

Confidence

Good

Weather Forecast

Strong ridge of high pressure remains in place with no new precipitation, light NW winds and above normal temperatures to continue.

Avalanche Summary

A few loose, wet releases on solar exposed slopes during peak heating periods.

Snowpack Summary

Strong solar radiation effects present on east to west facing slopes.  In lower elevation terrain snowpack is becoming isothermal during peak heating periods but strong overnight freezes allow for good recovery - definitely spring like conditions.

Avalanche Problems

Loose Wet

Steep solar aspects have been producing loose wet avalanches in the past several days due to intense solar radiation and daytime heating.
Avoid exposure to sun exposed slopes.>

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 4

Cornices

Cornices are large and sagging after several days of warm temperatures. Recent cornice failures have triggered slabs on the underlying slopes. Be aware of overhead exposure especially during times of intense solar radiation.
Pay attention to overhead hazards like cornices.>Cornices become weak with daytime heating, so travel early on exposed slopes.>

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 5

Persistent Slabs

Isolated wind slabs are a concern in steep, convex and unsupported features on northerly aspects. Shallow snowpack areas are possible trigger points.
Avoid shallow snowpack areas where triggering is more likely.>Choose the deepest and strongest snowpack areas on your run.>

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 5