Boletín de aludes

Flathead

Feb 19 – 20, 2026Avalanche Canada
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Archivado · caducó 7 months ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

Storm snow has added load to a complex upper snowpack creating touchy avalanche conditions.

Stick to lower angle terrain with no overhead hazard.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1.5–2.5

    A weak layer of surface hoar/crust/facets exists in the upper snowpack. Triggering this layer is possible but it's distribution is spotty. The most likely areas are on north facing terrain and was most recently reactive in the Flathead.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2

    Recent storm snow will remain reactive as it settles. Cold temperatures may prolong its reactivity specifically where it has formed over a crust.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Keep your guard up at lower elevations. Storms slabs have been reactive at all elevations.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Confidence

Moderate

  • We are uncertain about how quickly the snowpack will recover and gain strength.

Avalanche Summary

There was an avalanche fatality in the Matheson Creek area on Tuesday. See this MIN report for more details.

A cycle of natural, human, and explosive triggered storm slab avalanches up to size 2 occurred on Tuesday in the Lizard Range. In the Flathead range there were reports of several remotely triggered (from a distance of 100+ m) persistent slab avalanches. One of of these was a size 3 with a very wide propagation approximately 50-60 cm deep at 2000 m on a west aspect.

Snowpack Summary

Roughly 50 cm of storm snow has developed touchy storm slabs over an upper snowpack that is variable and contains two distinct layers:

  • At 50 cm depth, a supportive crust exists on south-facing terrain. On north-facing terrain, this crust is breakable or absent.

  • Between 60 and 100 cm depth, a persistent weak layer of crust/facets with spotty surface hoar is present.

The persistent weak layer is becoming less reactive but continues to produce sporadic avalanches, particularly on north aspects where a supportive crust is absent and in less-travelled areas like the Flathead. Recent storm snow has increased the load on these layers.

Weather Summary

Wednesday Night

Partly cloudy. 1 to 3 cm of snow. 10 km/h southwest ridgetop wind. Treeline temperature -19 °C.

Thursday

Mix of sun and clouds. 15-20 km/h southwest ridgetop wind. Treeline temperature -12 °C.

Friday

Mix of sun and clouds. 2 to 4 cm of snow. 10-20 km/h west ridgetop wind. Treeline temperature -13 °C.

Saturday

Mix of sun and clouds. 20-30 km/h southwest ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

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