Avalanche Forecast
Issued: Jan 8th, 2013 9:24AM
The alpine rating is Storm Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain on Wednesday
Weather Forecast
Wednesday: Moderate NE wind. Alpine temperature near -10. No precipitation.Thursday: Moderate NW winds. Alpine temperature near -12. Light snow.Friday: Light W wind. Alpine temperature near -9. 8-12 cm snow.
Avalanche Summary
Snowmobilers witnessed naturally-triggered slabs and loose dry sluffs in the Seaton Basin on Monday.
Snowpack Summary
New snow is building up over a weak, faceted old snow surface, which may lead to storm slab development or loose dry sluffing. In wind-affected areas, wind slabs have formed behind terrain breaks such as ridges and ribs. A strong mid-pack overlies a weak base layer of facets and the remnants of a crust. As snow builds up incrementally over these weaknesses, avalanche danger is also likely to gradually increase. Under these circumstances, it can be hard to evaluate if/when the tipping point will occur which leads to slab avalanches failing on persistent weak layers. Keep track of snow loading in your local area and adopt a cautious approach to terrain selection.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 9th, 2013 2:00PM