Avalanche Forecast

Issued: Feb 10th, 2014 8:27AM

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

Avalanche Canada bcorrigan, Avalanche Canada

Hazard may change dependent on the amount of new snow. More snow than forecast may push the hazard rating higher than forecast.

Summary

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain on Wednesday

Weather Forecast

Synopsis: Pacific storms are set to replace the cold clear weather from the last 4 weeks.Monday Night: Freezing level at valley bottom. 5 to 10cm of precip. Wind: Light to Mod SW |Tuesday: Freezing Level: 900m, Precip: 5/10 cm Wind: Light/Mod SW Wednesday: Freezing Level: 1200m; Precip: 15/20 cm Wind: Mod to Strong SW to WestThursday: Freezing level 1300m Precip. trace Wind Mod to Strong, S to SW ,

Avalanche Summary

Surface sluffing and small wind slabs have been reported in the past few days.

Snowpack Summary

The last recent snowfall, (Jan 29t) has facetted quickly in the cold temps. Surface hoar has formed as well in protected areas. In wind exposed terrain, especially in the alpine, winds continue to form shallow wind slabs that are most prevalent immediately lee of ridge crest. These variable wind slabs should stick around a bit longer than we're accustomed to as they are resting on a weak layer composed of large grained surface hoar (widespread in most sheltered and shaded areas at all elevations), a sun crust on open south facing slopes, faceted grains (in colder areas or areas with a thinner snowpack), or a combination of the above.Most of the snowpack is generally well consolidated. However, in thinner snowpack areas a facet/crust weakness may exist near the bottom of the snowpack. The depth of this layer makes human triggering unlikely, but the consequences of doing so could be disastrous.

Problems

Storm Slabs

An icon showing Storm Slabs
New snow combined with strong winds will produce wind slabs on top of existing weak layers.  Careful terrain evaluation will be needed to ride/travel safely in the back country.
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.>Avoid shallow snowpack areas where triggering is more likely.>Avoid steep, open glades in the forest.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 4

Valid until: Feb 11th, 2014 2:00PM

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