Avalanche Forecast
Issued: Feb 22nd, 2017 8:00AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeAlpine North aspects are providing the best skiing. Watch for fresh soft slab at ridge top.
Summary
Weather Forecast
A weak upper trough will drift east from the coast today bringing afternoon convective flurries. As it passes there will be a shift to drier modified arctic air to move south. Alpine high of -10C today and light ridge top winds. The freezing level should rise to 800m this afternoon. Little in the way of precipitation for the remainder of the week.
Snowpack Summary
Winds picked up last evening from the S-SW into the moderate range likely forming soft slabs on lee features in the alpine. Trips to Perly Rock area and Lily Dome loop found generally well bonded snow and little wind effect. Layers of concern down 30-60cm are crusts on S aspects and surface hoar on protected north facing terrain.
Avalanche Summary
Two slides to size 2 out of steep solar terrain on Mt Tupper yesterday at mid-day. One size 1 slab off the N aspect of the wind scoop below the W side of Dome col. This slide was 20cm deep, 40m across and ran down into the scoop, maybe 10m distance. This slide appeared to be human triggered sometime on February 20.
Confidence
The weather pattern is stable
Problems
Wind Slabs
Freshly formed soft windslab can be expected along the immediate lee of ridge lines and alpine cross winded features.
Use caution in lee areas. Recent wind loading has created wind slabs.
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Feb 23rd, 2017 8:00AM