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Archived

Avalanche Forecast

Dec 31st, 2024–Jan 1st, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

Lots of good riding can be found throughout the park.

Watch for sluffing in steep terrain, and fresh wind slabs in consequential terrain.

Confidence

Moderate

Avalanche Summary

We have observed a few natural avalanches up to size 2 this week. They occurred in the steep terrain east of Rogers Pass.

Reports on rider triggered sluffing in steep terrain have continued throughout the week.

Snowpack Summary

Around 60cm of new snow has fallen over the past week. This new snow has been redistributed by moderate wind which has created pockets of soft slabs in wind prone areas. There is a isolated sun crust buried ~15cm on steep S aspects.

The snowpack is strong with a well settled mid-pack. An interface down 90-120 has been unreactive for weeks. It consists of surface hoar in sheltered locations, and a sun crust on solar aspects.

Weather Summary

Cool temps and light flurries are forecast for the remainder of the week.

Tonight Cloudy w/flurries. Trace precip, Alp Low: -13, Ridge wind W 10-25. Freezing level (FZL) at valley bottom.

Thurs Cloudy w/ flurries. Trace precip. Alp High: -10, Wind SW 10-20. FZL 700m.

Fri Cloudy w/flurries. Trace precip. Alp High: -9. Wind SE 15-25. FZL 800m.

Sat Flurries 5-10 cm, Alp high -5 °C. Wind SW 10-25. FZL 1400m

Terrain and Travel Advice

  • Be especially cautious as you transition into wind-affected terrain.
  • Use appropriate sluff management techniques.

Avalanche Problems

Wind Slabs

Isolated pockets of wind slab exist near ridgetop and in wind affected areas. Flurries and moderate winds are sustaining this problem. Field teams have observed enough wind transport to make wind slab the primary concern.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2