Bollettino valanghe

Kananaskis

Feb 7 – 9, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 3 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Travel conditions at lower elevations are generally poor due to a very shallow snowpack. Conditions improve above 2100m where the crust is supportive to skiers. Some acceptable skiing is found at higher elevations, but it is challenging to get to and from that zone!

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2

    Very isolated wind slab formation has been found in Alpine terrain. This slab overlies the Feb 3 crust and could be more problematic on northerly aspects.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–2.5

    This will still be an issue in areas that escaped the heat, as there is no previous crust to hold the snowpack together.

  • Deep Persistent Slabs

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

    This layer is shielded by 2 crusts, but is still triggerable from thin to thick transitions. Very much a low probability, high consequence situation.

Terrain and Travel Advice

  • Wind slabs may be poorly bonded to the underlying crust.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.
  • In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.

Confidence

High

Avalanche Summary

Nothing new today.

Snowpack Summary

Some moist surface snow was observed this afternoon at lower elevations. The recent storm snow is settling and now averages 5 to 15cm over the Feb 3 crust. This crust is supportive to skiers above 2100m and extends at least as high as 2500m. The bond at the storm snow - crust interface is mainly good, except on steep northerly aspects in the alpine. Very isolated wind slab development has been observed in the alpine in wind prone areas.

Weather Summary

Thursday should bring a mix of sun and cloud with a slight chance of flurries. Snowfall accumulations will only amount to 2-3cm with light westerly winds and temperatures near -5C.

More details can be found in the Mountain Weather Forecast.

Regioni coperte