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Avalanche Forecast

Archived

Jan 12th, 2025–Jan 13th, 2025

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Lizard-Flathead, Flathead, Lizard.

Conditions are generally safe, but small wind slabs may be possible on steep slopes.

Confidence

High

Avalanche Summary

Small (size 1) slab avalanches were reported in wind-affected terrain on Saturday, and similar avalanches are still possible.

Snowpack Summary

Recent winds have impacted most open areas, making soft surfaces scarce, even at lower elevations. About 10 cm of recent snow rests on a variable interface with surface hoar or sun crusts. Below this, the snowpack is strong and bonded, with treeline snow depths averaging 150 to 200 cm.

Weather Summary

Sunday Night

Mostly cloudy. 30 km/h west ridgetop wind. Treeline temperature -10 °C.

Monday

Mostly cloudy. 30 km/h west ridgetop wind. Treeline temperature -7 °C.

Tuesday

Mix of sun and cloud. 20 km/h west ridgetop wind. Treeline temperature -6 °C.

Wednesday

Mix of sun and cloud. 20 to 30 km/h west ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • This is a good time for exploring terrain.
  • Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at 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.