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
The avalanche danger is variable and can range from Low to High. Travelling early in the day is recommended, as conditions can change rapidly in short periods of time due to daytime warming. Pay careful attention to the integrity of surface crusts formed overnight and rising air temperatures during the day. Dry slab avalanche danger may also exist during spring snow storms. More Spring Conditions details.
Expect to find pockets of windslab on high elevation N aspects formed by the new snow being redistributed by S-SW winds.
Surface crust breakdown can be expected with daytime warming. Wet slides will occur once the crust softens.
Cornices are huge and hanging over alpine lee slopes in many places. Daytime warming may promote failure of these large triggers. Cornice failure may wake persistent weak layers.
Deep persistent slabs are best managed by:
Cornices are best managed by:
A mix of sun and cloud today with isolated flurries. Freezing levels should remain below 1700m and winds will be moderate from the SW. More of the same for Mon and Tues, then a dramatic warm-up on Wed-Thurs with freezing levels rising to 3000+m and light precipitation.
High elevation N aspects still hold a winter snowpack with surface windslab that may be sensitive to human triggering given the right location. On all other aspects, expect temperature and sun crusts until daytime warming softens the surface. The snowpack is isothermal below these surface crusts at tree-line and below tree-line elevations.
No new activity has been observed. Glide cracks continue to widen with the Spring warming and are very difficult to predict when they will fail.