Lawinenlagebericht

Sea To Sky

Mar 25 – 26, 2026Avalanche Canada
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Archiviert · abgelaufen 6 months ago

Lawinengefahr

Fri
Sat
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Start on small, mellow slopes and watch for signs of instability before approaching steeper or larger slopes.

Snowfall will vary. If you find 40 cm+ of fresh, increase danger by one step.

Lawinenprobleme

  • Cornices

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

    Cornices are large and fragile. Ongoing snow and wind are making them larger. Avoid travelling on or under them.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2.5

    Recent storm snow and southwest winds continue to build reactive slabs. Avalanches are expected be larger and more likely on west through north facing (leeward) slopes.

Confidence

Moderate

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.
  • We are uncertain due to the track and intensity of the incoming weather system.

Avalanche Summary

On Wednesday around Whistler, explosives avalanche control produced a large (size 2) Cornice release that entrained some loose dry snow on the slope below.

On Tuesday around Whistler, several small to large (size 1-1.5), rider controlled storm slab avalanches were reported, in alpine and treeline terrain, with the deepest avalanches being on north facing slopes in the alpine.

Snowpack Summary

Another 5 to 15 cm of new snow is expected by the end of the day on Thursday with moderate winds. Expect deeper, more reactive deposits in leeward terrain. Strong to Extreme wind from Tuesday night into Wednesday means that much of the alpine may have hard, wind affected snow on or near the surface.

This should all add up to 40 to 60 cm of recent storm snow over a widespread, thick and hard crust below about 2000 m, and old wind-affected snow at upper elevations.

Deeper in the snowpack, older weak layers currently buried 70–100+ cm have likely gained strength, and are not considered a problem at this time.

Weather Summary

Wednesday Night
Mostly cloudy. 1 to 10 cm of snow, possibly 20 cm or more north and west of Pemberton. 30 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Thursday
Mostly cloudy. 4 to 5 cm of snow. 30-45 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Friday
Mostly cloudy. 4 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Saturday
Mix of sun and clouds. 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be especially cautious as you transition into wind-affected terrain.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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