Bollettino valanghe

Sea To Sky

Feb 25 – 26, 2016Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 11 years ago

Pericolo valanghe

Sat
Sun
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Large, fragile cornices demand respect. Give them a wide berth on ridges and avoid travelling underneath them.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3
    Wind slabs exist on many slopes. It may still be possible to trigger these with the weight of a person or snowmobile.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–5
    Large cornices are looming. These could fail under the weight of a person, or on their own. A cornice fall can also trigger a large avalanche on the slope below.

Confidence

Moderate - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

The first of two cold fronts is expected to bring 5-10 cm snow late on Friday, with moderate south-westerly winds and the freezing level dropping to around 1300 m. There is a lull on Saturday before the second front brings light snow and moderate winds again on Sunday.

Avalanche Summary

A few size 1-2 wind slabs were triggered by skiers and naturally over the past few days. In some areas affected by the sun, loose wet avalanches were observed. These were mostly small, but some very large (size 3) wet avalanches were observed on a flight yesterday.

Snowpack Summary

Cornices are large and weak. Recently formed storm slabs and wind slabs are generally settling, but may still be reactive to human triggers in specific terrain, and may be triggered by cornice fall. Several crusts can be found in the upper metre of the snowpack. A layer of surface hoar buried in early January is down 1-2 m. In most places it is thought to be capped by a thick strong crust. It is becoming increasingly hard to make this layer fail in snowpack tests and triggering an avalanche on it is unlikely.

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