Bulletin d’avalanche

Jasper

Apr 1 – 4, 2026Avalanche Canada
Voir sur la carte
Archivé · expiré 6 months ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
Ouvrir la carte complète

Points saillants

Temperatures are rising this week. Plan your objective with this in mind: start early, end early!

We are cautiously gaining confidence in the snowpack; dig and investigate persistent weak layers before committing to slopes.

Great skiing can be found at all elevations.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2

    Recent strong south and westerly winds have created new wind slabs in lee features in the alpine.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4

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

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Warm temperatures and increased solar radiation will increase the hazard on solar slopes throughout the day.

Confidence

High

  • We are confident due to a stable weather pattern.

Avalanche Summary

A size 3 persistent slab was observed on the West face of Mt. McGuire on April 1st originating in steep unskiable terrain.

Field teams observed a size 2 wind slab on Boundary peak on March 30th.

Snowpack Summary

Around 15cm of new snow has fallen this week, redistributed by south and westerly wind in the alpine. Below, a firm crust is supportive at low elevations but gradually disappears above tree line, around 2300 m. A deeper persistent weak layer from late January exists down 80–120 cm. The lower snowpack is generally strong although weak basal facets can still be found in shallow areas.

Weather Summary

Thursday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -1 °C.

Ridge wind North: 10-20 km/h.

Freezing level: 2200 metres.

Friday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -8 °C, High -5 °C.

Ridge wind Southwest: 15-30 km/h.

Freezing level: 1800 metres.

Saturday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -8 °C, High -5 °C.

Ridge wind West: 15-35 km/h.

Freezing level: 1700 metres.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Keep in mind that human triggering may persist as natural avalanches taper off.

Régions couvertes