Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Small loose dry avalanches or sluffs are always problematic with new snow. Exercise caution around tree wells and early season hazards.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.
- Avoid unsupported slopes.
Avalanche Summary
Yesterday in the highway corridor we observed one size 2 avalanche stopping in the runout zone(limited observations with poor visibility). Our field team ski cut a small size 1 on a North aspect at 2150m. This failed on some preserved new snow crystals just above the Halloween crust, roughly 40cm deep, 5m wide and ran 40m in length.
Snowpack Summary
60 cm of new snow fell over the last 6 days (20cm yesterday), leaving behind a storm slab in specific locations at tree line and widespread in the Alpine. The Halloween crust is now buried 40-60cm from the surface at tree line and below tree line, the height of snow diminishes quickly below 1700m.
Weather Forecast
Today we'll see a mixed bag of weather, from sunny periods to convective flurries. Winds will be moderate from the SW, freezing level at Valley bottom and possibly a few centimeters of snow. Looks like more of the same for the next few days. Then on Sunday, we'll see a significant snowfall up to 30cm.
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60cm of storm snow now covers the Nov 9 interface. The storm slab will need a couple of days to heal, as the upper snowpack bonds. The storm slab will be most problematic on exposed terrain features and unsupported convexities.