Bulletin d’avalanche

Glacier

Feb 19 – 20, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Sun
Mon
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué

Points saillants

The tracks and runouts of avalanche paths are filled in and smooth, even relatively small avalanches could run fast and far.

Avoid overhead exposure during the peak of the storm on Saturday.

Problèmes avalancheux

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1.5–2.5

    Expect loose dry avalanches in steep sheltered terrain.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1.5–3

    Storm slabs will continue to build through out the day on Saturday with strong winds and moderate snowfall.

Weather Forecast

A cold front pushing down from the NW will give moderate to heavy snowfall and strong Westerly winds Saturday.

Tonight: Flurries (5cm). Alpine Low -7*C. Moderate SW ridgetop winds.

Saturday: Snow (15cm). High -6*C. Strong W wind.

Sunday: Flurries (10cm). Low -15*C, High -8*C. Light NW wind.

Monday: Sunny periods.  Low -25*C, High -18*C. Light E wind.

Snowpack Summary

Ongoing Strong S-SW winds and snowfall (up to 30 cm so far this week, and ~20 cm more coming Saturday) is building fresh reactive storm slabs.

The new snow sits over; small surface hoar in sheltered terrain below treeline; wind effect in the Alpine; and a crust on solar slopes into the alpine.

The Jan 29 SH layer, buried 60-120cm, is rounding.

Avalanche Summary

On Friday, a field team triggered a size 1 storm slab on an steep slope at treeline, and there was one size 3.0 natural avalanche from a South facing path in the W end of the Park (Gunners 2)

On Thursday field teams triggered 2 size 1 slabs on a North aspect at treeline, and there was one size 3.0 on a S aspect in the HWY corridor.

Confidence

Forecast snowfall amounts are uncertain

Régions couvertes