Avalanche Forecast
Issued: Dec 22nd, 2013 4:00PM
The alpine rating is Deep Persistent Slabs and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Weather Forecast
Snowfall amounts of 5-10cm are forecast for Sunday night and into Monday accompanied by gusty West winds. Depending on amounts this may increase the avalanche hazard slightly especially in the alpine. Continued flurries and gusty W winds are forecast through Wednesday with alpine temperatures ranging between -7'C and -15'C.
Snowpack Summary
20-30cm of recent snow now sits on top of a generally weak snowpack. Some new wind slabs are present near ridge crests in alpine areas. The lower half of the snowpack is comprised of weak facets and depth hoar. Total snowpack depths range from 60-100 cm, with the deeper snow located on the western side of the forecast region.
Avalanche Summary
Several natural slab avalanches up to size 3 were reported in alpine terrain in Banff and Jasper over the past 36hrs. All of these were failing on the weak basal facets layers near the ground. A skier remote size 1.5 was also reported yesterday on a small steep N facing tree line feature at Bow Summit.Â
Confidence
Forecast snowfall amounts are uncertain on Monday
Problems
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 23rd, 2013 4:00PM