Bulletin d’avalanche

Banff Yoho Kootenay

Apr 14 – 15, 2014Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Thu
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Today was an amazing day in the mountains! We are rating the danger low at all elevations, but read here to see how we treat danger ratings in the spring. Afternoons are warming up slightly, but not much. We are a few weeks behind a typical spring.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Spring is cornice season and a great time to try and totally avoid exposure to cornices. If you must go under one, move quickly and reduce your risk by reducing your exposure time.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    On Tuesday expect this problem only on lower elevation, sun exposed places. Watch out in steep cliffy areas or steep forest in the afternoon.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    This problem seems to have calmed down in the last week, but we remained concerned and expect  to see more of these avalanches when the temperatures warm up again.

Weather Forecast

The northwesterly flow that has been keeping the temperatures cool will continue through the middle of this week, and both Tues and Wed will have cloud cover and light/moderate snow. Freezing levels will hit 1600m with light flurries beginning mid-day on Tuesday and building into Wednesday with a possibility of 10cm by the time it's over.

Snowpack Summary

A supportive melt-freeze crust exists on all aspects to 2300m, and higher on south and west aspects. The snowpack is well settled with no surface instabilities as long as the temperature remains cool. Cornices are a concern on most days this year, particularly from noon onward as they get baked by the sun.

Avalanche Summary

Small loose snow point release avalanche were observed on south facing terrain in the afternoon.

Confidence

Régions couvertes