Bollettino valanghe

Jasper

Apr 8 – 9, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto last year

Pericolo valanghe

Thu
Fri
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
Senza grado
Apri la mappa completa

In sintesi

Start and end your day early, and stay flexible in your trip planning.

The cooling trend hasn't improved travel conditions below treeline.

Problemi valanghivi

  • Wind Slabs

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

    Isolated windslabs on N asps where HST available for transport.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3

    Changing conditions (solar, new load) may result in cornice failure, acting as a large trigger on the slope below. Avoid overhead exposure containing overhanging cornices.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–3

    Small avalanches have the potential to step down to this deeper problem layer, made up of buried weaker facets below an crust formed earlier in the season.

    Still exists in the snowpack BTL; use caution on steep open slopes.

Confidence

High

Snowpack Summary

Moist snowpack treeline and below where spring temperatures are penetrating well into the snow on all but cold north aspects in the alpine and treeline. Near-surface crusts on solar aspects are unsupportive without a good overnight freeze. A 50-100 cm settled mid-pack rests on top of weak facets, depth hoar, and old crusts. Tree line snow depth is 80-130 cm.

Weather Summary

Overnight: Cloudy, isolated flurries. Low -6°C. Ridge wind SW: 20 km/h.

Wednesday: Cloudy with sunny periods and isolated flurries. High -3 °C. Ridge wind SW: 25 km/h. Freezing level: 1900 metres.

Thursday: Cloudy with sunny periods and isolated flurries. High 1 °C. Mostly light ridge winds with moderate gusts, freezing level: 2400 metres.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.

Regioni coperte