Avalog Join
Archived

Avalanche Forecast

Jan 2nd, 2025–Jan 3rd, 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.

Keep a heads up for lurking windslab around ridgetop lee features, especially in unsupported or extreme 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.

There are also some great MIN reports that show rider controlled windslabs in steep terrain.

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 persist Friday as the high pressure system dominates the weather for another day

Tonight Cloudy w/flurries. Trace precip, Alp Low: -10, Ridge wind: SE 15. Freezing level (FZL) at valley bottom.

Fri Cloudy w/flurries. Trace precip. Alp High: -5. Wind: SE 15. FZL 1000m.

Sat Flurries 5cm, Alp high -6 °C. Wind: SW 15-25. FZL 1400m

Sun Cloudy w/ flurries. Trace precip. Wind: SW 10-20. FZL 700m

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