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Avalanche Forecast

Archived

Feb 11th, 2026–Feb 12th, 2026

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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Flathead, Lizard, Moyie, St. Mary.

A weak layer in the snowpack remains a concern for human-triggering. Don't let your guard down.

Remain vigilance during travel and look for signs of instability like whumpfing and cracking.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

A remote triggered small avalanche (size 1) was reported on Tuesday at treeline on a north facing slope.

The South Rockies Field team reported widespread whumpfing as they travelled on north facing slopes in the alpine on Tuesday.

Snowpack Summary

Between 10 to 15 cm of wind affected new snow overlies a widespread variable crust on all but high alpine north facing terrain.

A weak layer of surface hoar on a melt-freeze crust, with a thick layer of facets below, formed in late January is buried 20 to 50 cm deep.

The mid and lower snowpack remain well settled, with no significant concerns at this time.

Weather Summary

Wednesday Night
Clear skies. 30 km/h west ridgetop wind. Treeline temperature -5 °C.

Thursday
Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature -5 °C.

Friday
Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature -6 °C.

Saturday
Mostly cloudy. 4 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at treeline.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.