Bulletin d’avalanche

South Coast Inland

Jan 12 – 13, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Stay off wind-loaded slopes and be mindful of overhead hazard, especially during periods of strong sun.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Shifting winds have created slabs on a variety of aspects in wind-loaded terrain.

    Strong sun may increase the reactivity of wind slabs on steep, sun-affected slopes.

Confidence

Moderate

Snowpack Summary

10 to 30 cm of new snow arrived Friday night with strong southeast switching to northwest wind creating wind-affected surfaces and wind slabs on a variety of aspects in exposed terrain.

This new snow overlies a sun crust on steep south-facing slopes, faceted snow or large surface hoar in sheltered areas, and wind-affected surfaces in exposed areas.

A second crust is buried 60 to 100 cm deep and may have a layer of surface hoar sitting above it. Recent tests show this layer as unreactive.

The remainder of the mid and lower snowpack is well-settled.

Snow depths at treeline are roughly 100 to 150 cm.

Weather Summary

Saturday Night

Mostly clear with lingering valley cloud. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -6 °C.

Sunday

A mix of sun and cloud. 15 to 30 km/h northeast ridgetop wind. Treeline temperature -6 °C.

Monday

A mix of sun and cloud. 30 to 50 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 2500 m.

Tuesday

A mix of sun and cloud. 15 to 40 km/h west ridgetop wind. Treeline temperature 0 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Be aware of the potential for large avalanches due to buried surface hoar.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes