Lawinenlagebericht

Kootenay Boundary

Mar 14 – 15, 2026Avalanche Canada
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Archiviert · abgelaufen 7 months ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig

Kernpunkte

Don't let sunny skies lure you onto large, steep slopes.

Large slab avalanches remain possible to trigger at treeline and above.

Lawinenprobleme

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    2–3

    At upper elevations, where the crust is thinner or not present, it may still be possible to trigger persistent slabs on multiple buried weak layers of surface hoar and/or crusts in the top 120 cm of the snowpack.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2

    25 to 35 cm of recent snow and strong southwest winds have formed storm slabs that will be most reactive in wind-affected terrain.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Very Likely
    Größe
    1–1.5

    Expect natural wet loose avalanches to occur when the sun warms the dry snow for the first time.

Confidence

Moderate

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

Avalanche Summary

On Friday, several skier triggered size 1 storm slabs were reported on northeast aspects at treeline and above.

Snowpack Summary

25 to 35 cm of recent snow and strong southwest winds have formed storm slabs that will be most reactive in wind-affected terrain.

Below the recent snow is a 1 to 10 cm thick crust on all aspects. The thickness of the crust depends on elevation.

At upper elevations, where the crust is thinner or not present, it may still be possible to trigger persistent slabs on multiple buried weak layers of surface hoar and/or crusts in the top 120 cm of the snowpack.

The mid/lower snowpack is well settled and strong in most areas.

Weather Summary

Saturday Night
Clear skies. 30 km/h northwest ridgetop wind. Treeline temperature -12 °C.

Sunday
Sunny. 20 km/h west ridgetop wind. Treeline temperature -10 °C.

Monday
Mostly cloudy. 10 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Tuesday
Mostly cloudy. 5 to 15 mm of rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Expect slab conditions to change drastically as you move into wind-exposed terrain.

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