Boletín de aludes

Jasper

Mar 9 – 10, 2026Avalanche Canada
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Archivado · caducó 7 months ago

Peligro de aludes

Wed
Thu
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Give the recent storm snow and freshly formed wind slabs time to settle and bond before venturing into larger features. Despite the strong winds, good skiing can still be found in sheltered areas.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Recent strong southwest winds have created wind slabs at ridgeline and in lee features.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1.5–3

    A 40-80cm slab sitting atop the Jan 24th weak layer of facets & surface hoar has produced several large avalanches in the region this week. This interface is not bonding well and will take time to settle and stabilize.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

On March 8th, two size 2.5 wind slab avalanches were observed in the Churchill range, one size 2.5 slab avalanche was observed near Pyramid, and several size 1.5 wind slab avalanches were observed in the Icefields area. Marmot Basin staff reported observing several slab avalanches in the backcountry, with at least one being up to size 3.

On March 5th, a size 3.5 persistent slab avalanche was observed on Mount Morden Long in the Chuchill Range.

Snowpack Summary

Strong to extreme winds out of the S to N have created widespread wind-effect, scoured fetches, and formed wind slabs. A persistent weak layer of surface hoar and facets from January 24th is down 20-80 cm. There have been a number of natural avalanches that have failed on this layer in the past week. Below, the snowpack is generally well consolidated facets to ground. Icefields snow depths range from 130-200 cm and snow depth in the Maligne area ranges from 60-140 cm. 

Weather Summary

Tuesday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -13 °C.

Ridge wind southwest: 15 km/h gusting to 40 km/h.

Freezing level at valley bottom.

Wednesday

Cloudy with scattered flurries.

Accumulation: 5 cm.

Alpine temperature: Low -14 °C, High -13 °C.

Ridge wind southwest: 15 km/h gusting to 50 km/h.

Freezing level at valley bottom.

Thursday

Mainly cloudy with scattered flurries.

Accumulation: 5 cm.

Alpine temperature: Low -16 °C, High -11 °C.

Ridge wind west: 15 km/h gusting to 50 km/h.

Freezing level at valley bottom.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.

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