Avalanche Forecast
Issued: Feb 2nd, 2015 8:41AM
The alpine rating is Persistent Slabs, 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 system is uncertain
Weather Forecast
Flurries overnight are expected to bring 2-3 cm by Tuesday morning. Tuesday and Wednesday should be mostly dry with a chance of light flurries. The next storm should start early Thursday morning and at this time looks like it could bring 5-10 cm by Friday morning.
Avalanche Summary
No new avalanches reported. I suspect that the new storm snow may not bond well to the old crust and/or surface hoar, resulting in easy triggering of a thin soft slab.
Snowpack Summary
A thin layer of new storm snow has fallen on a variety of old surfaces, including hard crusts, breakable crusts at higher elevations, and surface hoar in some areas. A melt freeze crust can be found up to about 2200m. At higher elevations, the surface is heavily wind affected. The depth of the mid-January surface hoar is highly variable across the region and it may have been destroyed by warmth at low elevations. Where it does exist, it can be found between 30 and 70 cm below the surface. The mid-December surface hoar layer lies below a strong mid-pack down about 60 to 120cm. Both of these persistent layers have been reactive recently. The mid-November weak layer of crusts and facets can still be found near the bottom of the snowpack. It has been unreactive lately, but should be on your radar in shallow snowpack areas where there is more chance of triggering.
Problems
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
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: Feb 3rd, 2015 2:00PM