Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Dec 1st, 2024–Dec 2nd, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
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, Moyie, St. Mary.

Travel with caution around steep wind-affected slopes.

Field data is limited; We'd love to see your MIN reports if you are out in the mountains!

Confidence

Moderate

Avalanche Summary

Small wind slabs (size 1) have been triggered with ski cutting and explosives in the past few days.

Snowpack Summary

Last week's 40 to 60 cm of snow remains soft in sheltered areas, but may have formed reactive slabs in wind-affected terrain. A crust exists near the ground, with total snow depths of 100 to 150 cm at treeline.

Weather Summary

Sunday Night

Mainly clear. 15 to 30 km/h southwest ridge top wind. Treeline temperature -5 °C, with an above-freezing layer developing between 2200 m to 3000 m.

Monday

Mainly clear. 10 to 30 km/h southwest ridge top winds. Treeline temperature -2 °C.

Tuesday

A mix of sun and cloud. 10 to 30 km/h southwest ridge top wind. Treeline temperature -2 °C.

Wednesday

A mix of sun and cloud. 15 to 30 km/h southwest ridge top wind. Treeline temperature -1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

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.