Bulletin d’avalanche

Sea To Sky

Jan 6 – 7, 2025Avalanche Canada
Voir sur la carte
Archivé · expiré 2 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Soft snow at upper elevations will become moist and heavy with rapidly warming temperatures and sun on Monday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–1.5

    Pockets of wind slab may linger at elevations where snow remains dry.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    The likelihood of loose wet avalanches will increase as the snow surface becomes moist with rising temperatures and sun.

Confidence

Moderate

Avalanche Summary

On Friday and Saturday, numerous natural as well as skier- and explosive-triggered wind slabs were reported size 1-2. Most were in reverse-loaded lees of ridgetop on west to southwest aspects at alpine and treeline elevations.

Looking forward, natural and rider-triggered loose wet avalanches will become more likely.

Snowpack Summary

5 to 15 cm of recent snow sits over faceted old surfaces. The new snow has seen moderate wind effect at upper elevations. Any soft snow will likely become moist and heavy with temperatures rising above zero on Monday.

An otherwise right-side-up upper snowpack appears to be bonding well to a crust buried 70 to 100 cm deep. The mid and lower snowpack is generally well-settled and bonded with no deeper concerns.

Weather Summary

Sunday night

Clear. 5 to 20 km/h north ridgetop wind. Treeline temperature -2 °C.

Monday

Sunny. 5 to 20 km/h northeast ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 2500 m.

Tuesday

A mix of sun and cloud. 30 to 50 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2500 m to 2000 m.

Wednesday

A mix of sun and cloud. 10 to 30 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 to 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Rocks will heat up with daytime warming and may become trigger points for loose wet avalanches.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

Régions couvertes