Avalanche Forecast

Issued: Feb 3rd, 2017 4:02PM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada mbender, Avalanche Canada

There is a lot of uncertainty with snowfall amounts through the period. There is good potential for amounts to exceed what is forecast. If that is the case, expect danger ratings to be higher than indicated.

Summary

Confidence

Moderate - Intensity of incoming weather systems is uncertain on Saturday

Weather Forecast

Saturday: Flurries, accumulation 5-10cm overnight Friday into Saturday morning and an additional 10-15cm through the day / Light east wind / Alpine temperature -10Sunday: Periods of snow, accumulation 15-25cm / Light to moderate east wind / Alpine temperature -3Monday: Flurries, accumulation 10-15cm / Light to moderate east wind / Alpine temperature -15More details can be found on the Mountain Weather Forecast.

Avalanche Summary

There is no recent avalanche activity to report from the last few days, although I would expect avalanche activity to start to increase as new snow amounts start to accumulate over the coming days.

Snowpack Summary

Anywhere from 10-20cm of new snow is laying on previous surfaces that may include heavily wind affected snow, surface hoar in sheltered areas and/or facets. Crusts can be found near the previous surface on solar aspects at high elevations and on all aspects below 1600m. There have been isolated reports of a surface hoar layer from early January buried about 40-50cm deep in sheltered areas, although not much is known about its current reactivity. About 70cm below the surface, you'll find sugary facet crystals which formed during December's cold snap. Although avalanches are currently unexpected at this interface, this layer could come back to life with with warming, significant loading or a large trigger at a thin spot.

Problems

Storm Slabs

An icon showing Storm Slabs
New snowfall is accumulating. Additionally, combined with easterly wind this will start to form wind slabs in upper elevation lees.
Be cautious as you transition into wind affected terrain.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Be aware of the potential for avalanches due to buried surface hoar in isolated areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Feb 4th, 2017 2:00PM

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