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Avalanche Forecast

Archived

Nov 23rd, 2024–Nov 24th, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

North Rockies, Sugarbowl, McGregor, Pine Pass, Tumbler.

Observations are limited and early-season hazards are abundant.

Take a conservative approach and keep in mind that cold temperatures increase the consequence of any accident or injury.

Confidence

Low

Avalanche Summary

No new avalanches have been reported in the past few days, but field observations remain very limited.

If you head out in the backcountry, let us know what you are seeing by posting to the Mountain Information Network! 🙏

Snowpack Summary

Light snowfall will accumulate atop wind-affected surfaces in open areas and up to 40 cm of settling snow in sheltered areas.

Below this, facets or surface hoar may overly a crust buried in early November.

At the north end of the forecast area, expect to find weak, sugary depth hoar close to the ground.

Treeline snowpack depths are around 100 cm.

Weather Summary

Saturday Night

Cloudy with light snowfall, up to 5 cm of accumulation. 10 to 60 km/h northeast ridgetop wind. Treeline temperature -20 °C.

Sunday

A mix of sun and cloud with light snowfall. 5 to 30 km/h south ridgetop wind. Treeline temperature -16 °C.

Monday

Mostly sunny with isolated flurries. 15 to 30 km/h west ridgetop wind. Treeline temperature -12 °C.

Tuesday

A mix of sun and cloud with light flurries. 15 to 50 km/h west ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.