Avalanche Forecast
Issued: Nov 27th, 2017 8:15AM
The alpine rating is Wind Slabs and Wet Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeStrong winds in the alpine have created a touchy windslab. The rainsoaked snowpack below treeline needs cold temps to regain strength.
Summary
Weather Forecast
Today we can expect a break in the stormy weather. Temps will cool with freezing level down to 800m today giving us an alpine high of -9 deg. We might see sunny breaks in a mostly cloudy day today, with isolated small scale convective flurries. The next low pressure system and associated cold front arrives at Tuesday bringing 10-15cms of snow.
Snowpack Summary
Warm temperatures yesterday with rain created a moist snow surface to ~1900m. Overnight cooling has now turned that into a crust. In the alpine and at treeline 10cm of heavy snow fell and strong winds blew from the south creating windslab. Nov 23 Crust is still the prominent crust down 20-30cm. Below that the snowpack is rain soaked and isothermal
Avalanche Summary
In the Connaught creek drainage, skiers reported two natural size 2 wet slabs off of Mt Cheops, stopping halfway down the runout. Two natural size 2.5's were observed from high Alpine start zones yesterday along the highway, likely triggered by recent snowfall and windloading at ridgetop.
Confidence
Freezing levels are uncertain
Problems
Wind Slabs
Strong to extreme southerly winds overnight have significantly redistributed the snow in the alpine and at treeline. These fresh windslabs will be easily triggered by riders.
Use caution in lee areas. Recent wind loading have created wind slabs.Watch for whumpfing, hollow sounds, and shooting cracks.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wet Slabs
Warm temperatures and rain yesterday have added moisture to an already saturated snowpack below treeline. Cooling temps overnight have created a very thin surface crust but if this crust breaks down there will be very little cohesion in the snowpack
Avoid steep, open slopes.Use extra caution on slopes if the snow is moist or wet.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 28th, 2017 8:00AM