Bollettino valanghe

Jasper

Apr 10 – 11, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto last year

Pericolo valanghe

Sat
Sun
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
Senza grado
Apri la mappa completa

In sintesi

The winds have increased and we are expecting new snow. Watch for fresh wind slabs potentially down into tree line.

Problemi valanghivi

  • Wind Slabs

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

    New windslabs are being formed from south winds and convective flurries.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1.5–3

    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
    Possible
    Dimensione
    2–4

    Small avalanches have the potential to step down to this deeper problem layer, made up of buried weaker facets.

Confidence

Moderate

Avalanche Summary

Small windslab avalanches and large natural cornice avalanches have been observed in Jasper or just to the south of Jasper over the last couple of days.

Snowpack Summary

New windslabs are forming from strong south winds and new snow. The upper snowpack at treeline and below is a series of melt-freeze crusts and moist snow. The mid-pack and lower snowpack is dry, faceted and weak. The alpine and treeline snowpack on north aspects remains dry. Average treeline snow depth is around 100-150cm at the icefields area.

Weather Summary

Friday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -5 °C.

Ridge wind southwest: 20 km/h gusting to 70 km/h.

Freezing level: 1700 metres.

Saturday

Flurries.

Accumulation: 6 cm.

Alpine temperature: Low -9 °C, High -6 °C.

Ridge wind west: 15-35 km/h.

Freezing level at valley bottom.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Regioni coperte