Bollettino valanghe

Kananaskis

Apr 18 – 19, 2014Alberta Parks
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

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

In sintesi

A weak freeze is forecast overnight and clear skies are forecast for Saturday.  The snowpack will deteriorate quickly on Saturday, especially on Solar aspects so early starts and early finishes are key.  Pay close attention to temperature and aspect.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–4
    Along ridgelines , ridgecrests and in gullied terrain expect to encounter these problems

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–3
    Steeper terrain at treeline on all aspects and up to ridgelines on solar aspects.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    3–6
    This deep instability can become a problem with increased amounts of sun and or rain.  Have in your mind the "what ifs" of a large avalanche.

Confidence

Fair

Weather Forecast

Mix of sun and cloud with isolated convective flurries throughout the day on Saturday.  Winds are expected to increase overnight and begin to push into the strong range out of the SW.  Freezing levels again forecast to be around 2100m.  The cloud cover will minimize any overnight freeze so watch for stability to deteriorate earlier in the day on Saturday,

Avalanche Summary

Lots of loose wet pinwheeling was observed as well as 2 recent size 2 slabs at ridgelines in steep rocky terrain.

Snowpack Summary

A few cms of new snow overnight adds to the previous 20cm snow that has fallen over the past week.  On any aspects but true north this new snow has been fast to settle but on polar aspects in Alpine areas, there is still a very wintery snowpack.  The freezing level on Friday was at 2100m and below this the snow was wet and moist to ground.  Winds have been suprisingly calm but there was evidence of a windslab being formed at immediate ridgelines in the Alpine.  The basal facets are waking up with the warm temperatures of late and we are starting to see some larger avalanche or at least the potential for larger avalanches to occur.

Regioni coperte