Bulletin d’avalanche

Glacier

Mar 28 – 29, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

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

Points saillants

Cold, clear nights are needed to lock the low elevation snowpack (which has the consistency of oatmeal) in place.

Danger levels will rise with daytime warming and solar input.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5

    New snow, moderate SW winds, and mild temps are the perfect combination for forming fresh wind slabs in the alpine. Expect to find potentially reactive slabs if you can get to higher elevations.

  • Loose Wet

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

    Warm temps and rain have weakened the low elevation snowpack. Cool temps Tues and Wed morning will temporarily pause this problem, but daytime warming will reignite this issue each day. Glide cracks have a higher likelihood of releasing in rain.

Weather Forecast

The passage of warm rain will be followed by a brief clearing Tues, then back into a mix of flurries/showers with fluctuating freezing levels (FZL).

Tonight: Clearing, Alp low -7*C, FZL 600m

Tues: Mix of sun/cloud, Alp high -1*C, FZL 1900m, light S winds

Wed: Cloudy/scattered flurries, 5cm, Alp high -2*C, FZL 600m rising to 1700m, light SW winds

Snowpack Summary

A total of ~20cm new snow above 2000m. A buried crust exists up to 2200m on all aspects and extends into the alpine on solar aspects. Pockets of storm/wind slab in the alpine and into tree line. The March 11th crust is buried 50-80cm. Warm rain soaked the snowpack below tree line, preventing a crust recovery overnight.

Avalanche Summary

We are currently in a natural avalanche cycle, with rain to 2000m saturating slopes below tree line. Chunky, moist/wet debris has been observed "flowing" onto the fans of the avalanche paths.

Glide cracks are widening and moving; show them respect during the rain and warm temps.

Confidence

Freezing levels are uncertain

Régions couvertes