Bulletin d’avalanche

Glacier

Jan 11 – 12, 2022
Voir sur la carte
Archivé · expiré 5 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré

Points saillants

The next series of storms will get progressively warmer and windier. Danger ratings at all elevations will rise with this next pulse of weather.

Enjoy the "light-ish" powder Tuesday, it won't be so lovely Wednesday.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3

    Wind slab is being built in the alpine and down into tree line. 60cm of low density snow is available for transport by the 30-45km/hr SouthWest winds. Watch for shooting cracks and hollow drum sounds as you transition into wind affected terrain.

  • Storm Slabs

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

    Storm slabs are in their infancy tonight and early Tues am. They will grow into much thicker, heavier beasts as the storm intensifies, precip rates increase, and the air warms.

Weather Forecast

Things are about to get wet, wild, and warm.

Tonight: Flurries, 10cm, Alp low -7*C, mod SW winds

Tues: Snow, 10cm, Alp high -4*C, fzl rising to 1200m, mod/gusting strong SW winds

Wed: Snow, 35cm, Alp high 0*C, fzl rising to 1800m, strong SW winds

Thurs: Flurries, 15cm, Alp high -2*C, fzl 1600m, mod/gusting strong W winds

Snowpack Summary

Warming temps and moderate SW winds are forming new surface slabs with the 60cm of recent low density snow. The Dec 1 crust (now buried up to 2m deep) remains dormant, despite having weak, sugary, faceted snow above and below it. The mid-lower snowpack is settled and strong.

Avalanche Summary

Explosive control produced several sz 1.5-2 soft slab avalanches, 30-40cm deep, at and below treeline today. Slabs were failing in the recent storm snow and not stepping down to deeper layers.

A field team in the Hermit area noted several small loose, dry point releases from ridge-top, as well as a small sz 1 wind slab on a moraine feature at 2200m

Confidence

Intensity of incoming weather systems is uncertain

Régions couvertes