Bulletin d’avalanche

Sea To Sky

Dec 6 – 7, 2017Avalanche Canada
Voir sur la carte
Archivé · expiré 9 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Alpine temperatures are sky rocketing! Dial back your terrain choices when the snow gets moist or mushy and avoid cliffs, gullies, and steep slopes with trees.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Isolated winds slabs have formed on a variety of aspects at higher elevations, and in some cases sit above a buried crust. Be careful on steep convex terrain or where the wind has blown the snow into more cohesive slabs.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Conditions will be more like spring than winter this week. Surface snow layers can become weak when hit by the sun. Minimize your exposure to terrain traps - even small sluffs can push you into dangerous terrain.

Confidence

High - The weather pattern is stable

Weather Forecast

THURSDAY: Sunny, light wind, freezing level around 3200 m.FRIDAY: Sunny, light wind, freezing level around 3000 m.SATURDAY: Increasing cloud, moderate to strong southwest wind, freezing level around 2500 m.

Avalanche Summary

On Tuesday, a few small loose avalanches were reported on steep south-facing slopes, showing the initial effects of the warm weather. More wet loose activity can be expected thanks to the sustained warming this week.

Snowpack Summary

Dramatic warming will cause widespread melting of the surface snow, especially on south-facing slopes. Crusts may form overnight, but will melt quickly in the mornings. The 40-60 cm of storm snow that fell last week is rapidly settling and bonding well to the late November rain crusts. Up high, shifting winds (first from the south, and more recently from the north) have blown snow around in exposed areas creating drifts and scoured areas.

Régions couvertes