Avalanche Forecast
Issued: Jan 10th, 2013 8:08AM
The alpine rating is Storm Slabs and Loose Dry.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Good
Weather Forecast
The main pulse of the storm is now past us and an arctic high to the north will begin to bring clear skies and cooler temps into the forecast region. Winds will becoming more NW'erly over the next 24hrs but they are forecast to stay in the moderate to light range. Lots of snow is available for transport so be sure to keep an eye on the winds and there is a definite potential for some reverse loading over the next few days.
Avalanche Summary
Numerous slab avalanches up to size 2 were observed in steep open terrain below 2150m. These slides were only 30-40cm deep and likely failing on the 0106SH interface. In the alpine, numerous slabs avalanche on steep south facing slopes were observed up to size 2.5. These avalanches were failing within the storm snow and running to the top of their normal runouts. Numerous loose dry sluffs up to sz 1.5 were also observed.
Snowpack Summary
An additional 24cm of snow fell overnight bringing our totals over the past week to 50cm of snow at lower elevations and closer to 70cm at higher elevations. Widespread storm slabs can now be found in alpine terrain. These slabs vary from 30-50cm thick. These slabs are overlying the 0106 Surface hoar/Facet interface. The surface hoar is most prevalent below 2100m and more spotty in nature above this elevation. At higher elevations, winds have developed stiff windslabs that are failing on this interface in the easy range in test results. There was no evidence of any avalanches stepping down to any deeper instabilities.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 11th, 2013 2:00PM