Avalanche Forecast
Issued: Feb 7th, 2014 7:17AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing, track, or intensity of incoming weather system is uncertain on Monday
Weather Forecast
Saturday: A mix of sun and cloud. Moderate SE alpine wind. Freezing level in valley bottom with alpine high temperature reaching -20 C. Sunday: Cloudy with sunny periods. Moderate SE alpine wind. Freezing level in valley bottom with alpine high temperature reaching -20 C. Monday: Increasing cloud with light snow possible in the afternoon.
Avalanche Summary
Reports from Thursday include natural and artificially triggered cornice falls to Size 2.5 with only 1 Size 1 wind slab triggered on the slope below. The faceted surface snow is also sluffing readily in steep terrain with skier traffic.
Snowpack Summary
A highly variable snowpack surface includes surface facets, surface hoar, thin wind slabs, and scoured crust, or any combination thereof. Remember to take stock of current surface conditions, especially crusts, surface hoar, and facets. Once buried buy a cohesive slab, surface hoar or a thin layer of facets sitting on a crust almost always becomes a weak layer for avalanches, and will often persist.In sheltered areas, large surface hoar is growing on a few centimeters of faceted old storm snow sitting on the late January crust, which is likely faceted and laminated and could have surface hoar on top. The entire snowpack is likely faceting to some degree, especially where it is shallow. Basal facets and depth hoar are likely, but triggering is only a concern in thin and variable snowpack areas with large triggers. Cornices are also becoming brittle.
Problems
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 8th, 2014 2:00PM