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.
Previous Strong winds from many directions formed Wind Slabs at all elevations on specific terrain features. Cold temperatures have slowed down avalanche initiation rendering the wind slabs stubborn to trigger.
The December 27th surface hoar layer persists down 70-90cm. This layer was responsible for two skier triggered avalanches Saturday, and continues to produce hard sudden results in snowpack tests.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Mainly cloudy with flurries today. Temperatures are forecast to reach -19, winds are currently moderate in the Valley, but lighter at high elevations. Hoping some warm air will push out the cold tonight, bringing with it 10-15cm of new snow, as a Low-Pressure system pushes through from the Pacific.
Recent winds from all directions have likely built fresh wind slabs in immediate lees. Faceting and cold temps have given surface snow a chalk-like feel underfoot. Recent snowfall has settled to around 80cm over the Dec 27th surface hoar or crust depending on aspect and elevation. The mid and lower snowpack are generally well settled and strong.
No new avalanches observed in the Highway Corridor, or reported from the Backcountry yesterday. On Monday Mannix avalanche path in the Highway Corridor released naturally yesterday, size 3 terminating halfway down the fan, dusting the Highway.