Bollettino valanghe

Jasper

Mar 8 – 9, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 7 months ago

Pericolo valanghe

Tue
Wed
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

Strong to extreme winds have created wind slabs on a variety of aspects.

Be conservative in your terrain selection to avoid wind loaded areas and where triggering of the persistent weak layer is of higher consequence.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1.5–2.5

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

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–3.5

    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.

Snowpack Summary

Strong to extreme winds out of the NW to S 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. 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

Monday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -14 °C.

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

Freezing level at valley bottom.

Tuesday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -18 °C, High -14 °C.

Ridge wind southwest: 20 km/h gusting to 55 km/h.

Freezing level at valley bottom.

Wednesday

Flurries.

Accumulation: 10 cm.

Alpine temperature: Low -16 °C, High -10 °C.

Ridge wind southwest: 15 km/h gusting to 45 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.

Regioni coperte