Bollettino valanghe

Cirrus-Wilson

Feb 10 – 11, 2023Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 4 years ago

Pericolo valanghe

Sun
Mon
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

Up to 10cm of snow with continuing strong winds is forecasted for the Icefields region through Friday, and will keep the avalanche hazard elevated over the next few days.

Wednesday's explosive control near Parker Ridge resulted in numerous avalanches, including several large avalanches stepping down to ground. Keep your terrain choices conservative and pay attention to your overhead hazard.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    New snow with moderate to strong southwest wind created new wind slabs in the alpine and exposed tree line features.

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    Watch for dry loose avalanche especially in areas with high consequence like terrain traps

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    2–3

    Recent avalanche control had several large avalanche stepping down to this layer. The bottom of the snow pack is inherently weak with well developed Facets and Depth Hoar.

Confidence

Moderate

Avalanche Summary

Several size 3 natural avalanches out of alpine features have been observed in the last few days.

Avalanche control with explosives on Wednesday resulted in numerous avalanches with several of them being size 3 running to the bottom of the avalanche paths.

Don't forget to post avalanche observations to the MIN.

Snowpack Summary

Around 20 to 30cm of snow fell in the Icefields area during the storm. Strong south west winds have created new wind slabs in the alpine and exposed tree line. This new snow adds to 20cm of settled snow from early February. Generally, the mid and bottom of the snowpack is weak facets with depth hoar at the base. The snowpack ranges from 60 to 140cm.

Weather Summary

A weather system moving through Thursday night and into Friday could bring up to 10cm with strong winds.

Detailed weather forecasts from Avalanche Canada: https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.

Regioni coperte