Large areas of Glacier National Park are CLOSED for avalanche control
using EXPLOSIVES. Daily or annual winter permits are required to access
winter restricted areas. Access information is available at the Rogers
Pass Discovery Centre
Freshly formed soft windslab can be expected along the immediate lee of ridge lines and alpine cross winded features.
Deep persistent slabs are best managed by:
Cornices are best managed by:
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.
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.
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.