Avalanche Forecast

Issued: Feb 26th, 2015 7:22AM

The alpine rating is low, the treeline rating is low, and the below treeline rating is low. Known problems include Persistent Slabs.

Avalanche Canada triley, Avalanche Canada

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Summary

Confidence

Good

Weather Forecast

A weak low pressure system is expected to move across the interior out of the northwest overnight, that should result in a couple of cm of snow combined with moderate northerly winds. The high pressure ridge should re-build on the coast on Friday bringing mostly clear skies and light winds for Friday afternoon and Saturday. Another weak system is expected on Sunday. Cloud should develop during the day and snow by late evening.

Avalanche Summary

No new avalanches reported.

Snowpack Summary

Light amounts of wind-pressed snow (5-20 cm) cover the previous variable snow surface of surface hoar, crusts, or wind affected snow depending on aspect and elevation. The "Valentine's Day" crust is just below the surface and is now strong and thick in most places. Isolated thin wind slabs may still be reactive in high elevation lee terrain, and cornices remain large and weak. The late-Jan crust/surface hoar layer (up to 100 cm deep) and the mid-January surface hoar (80-120 cm deep) are generally dormant, and chances of triggering these weaknesses have decreased dramatically. However, triggering may be possible with a large input such as cornice fall, or an avalanche stepping down, especially on sun drenched slopes.

Problems

Persistent Slabs

An icon showing Persistent Slabs
Destructive persistent slab avalanches are now unlikely. Possible triggers include intense solar radiation or a large cornice fall. Limit your exposure to big overhead terrain, especially if the sun is shining and temperatures are warm.
Conditions have greatly improved, but be mindful that deep instabilities are still present.>Watch for clues, like sluffing off of cliffs, that the snowpack is warming up. >

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Unlikely

Expected Size

3 - 5

Valid until: Feb 27th, 2015 2:00PM

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