Bollettino valanghe

Jasper

Apr 6 – 7, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 6 months ago

Pericolo valanghe

Wed
Thu
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

5–10 cm of new snow overnight Monday with wind, will likely create new wind slabs on exposed north aspects. Distribution is expected to be variable, with isolated pockets of instability in the alpine at ridgetop, on cross-loaded, and in lee features.

Problemi valanghivi

  • Wind Slabs

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

    New snow, loading the N through NE aspects in the alpine. Expected some variable distribution depending on fetch.

  • Persistent Slabs

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

    The March 20 crust is buried 20-60cm at tree line and below. The Jan 24 facets are 80 to 120cm deep. Dig down to investigate how these layers have adapted to the load. Slopes that have not released naturally should be treated with caution.

  • Loose Wet

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

    Possible on all aspects BTL, especially direct solar aspects.

Snowpack Summary

Dry snow can still be found in shady aspects above tree line. 20-40 cm below, a firm rain crust from late March is supportive at low elevations but gradually disappears above tree line, around 2300 m. A deeper persistent weak layer from late January exists in the alpine down 80–120 cm. The lower snowpack is generally strong although weak basal facets can still be found in shallow areas.

Confidence

Moderate

  • We are uncertain due to variable freezing levels.

Avalanche Summary

Loose wet natural avalanche cycle up to size 2 at tree line and below on solar aspects. We are still seeing some sporadic natural slab avalanches on the persistent weak layer.

Weather Summary

Tonight: Flurries. ~6 cm. Low -8 °C. Winds south, 20 km/h gusting to 80.

Tuesday: Mix of sun and cloud. Flurries, trace. High -6 °C. Wind west, 25 km/h gusts to 80.

Wednesday: Mix of sun and cloud. Flurries, trace. Low -13 °C, High -2 °C. Mostly light winds, gusts to 55 km/h. Freezing level: 2000 metres.

Thursday: Cloudy with sunny periods. Flurries, trace. Low -10 °C, High -2 °C. Light wind. Freezing level: 1800 metres.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Even brief periods of direct sun could produce natural avalanches.

Regioni coperte