Fresh storm slabs will require some time to settle and stabilize, use extra caution as you transition into wind effected terrain.
The storm slabs from Friday are settling and strengthening, but incoming snow and wind on Sunday afternoon could rebuild this problem quickly.
There were a few large natural avalanches (up to size 3.0) from steep terrain in the highway corridor Friday through Saturday morning.
Up to 60cm of storm snow has fallen in the past week, accompanied by periods of strong SW winds. This has left several potential failure planes in the upper snowpack, especially in wind exposed areas.
The mid-snowpack is generally well bonded, rounded grains.
The basal Nov 17 deep persistent weak layer has not produced any slab avalanches in GNP for several weeks now, but persists in many places as faceted crystals - these are accompanied by a decomposing crust in some locations.
Another frontal system arrives Sunday night into Monday.
Tonight: Mainly cloudy with isolated flurries, Alpine low -9°C. Light SW ridgetop winds.
Sunday: Flurries turning to snowfall in the afternoon (10-15cm). Alpine High -5°C. Moderate-strong SW wind.
Monday: Snow (10-15cm). Low -10°C, High -7°C. Strong SW wind.
Tuesday: Mix of sun and cloud. Low -16°C, High -11°C. Light northerly winds.
