Avalanche Forecast
Issued: Jan 1st, 2013 3:00PM
The alpine rating is Wind Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeLots of alpine terrain being utilized that ordinarily does not see traffic this early in the season - there is still potential for large avalanches in isolated areas.
Summary
Confidence
Good
Weather Forecast
A ridge of High pressure will keep skies mainly clear with no precip in the forecast for the next several days.
Avalanche Summary
A few small sluffs to Size 1 from south and east aspects. Size 1.5 SSL in narrow steep gully below treeline, 2100m, E aspect, 40 deg slope. Trigger uncertain - possible natural , possible human triggered as tracks could be seen in the vicinity.
Snowpack Summary
Surface hoar growth below treeline continues due to cold clear nights. More facetting of upper layers as well. Midpack strength continues to hang in there although the strong temperature gradient is weakening the midpack.
Problems
Wind Slabs
Wind slabs of varying thickness are present in the Alpine on all aspects, especially along ridgelines. Buried wind slabs are also present on N and E aspects down 25 to 55cm in the snowpack.
Avoid lee and cross-loaded terrain along ridge tops.>
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Deep Persistent Slabs
This layer is still a concern despite the lack of activity. In most areas at and above treeline we have a generally "deep" snowpack, however shallow areas will be found in the alpine. Treat these variable areas with caution.
Be aware of thin areas that may propagate to deeper instabilites.>
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 2nd, 2013 2:00PM