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

There may be rolling closures for avalanche control on the Icefields Parkway in the Parkers area on Sunday, March 8th. Check for updates on https://511.alberta.ca/

Watch out for wind slabs and avoid triggering the persistent weak layer on steep, open faces, particularly where the snowpack is shallow.

Problemi valanghivi

  • Wind Slabs

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

    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

    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.
  • We are uncertain about forecast precipitation amounts.

Avalanche Summary

Several large avalanches failing on the January 24 persistent weak layer have been reported in the past week:

On March 2nd, several size 2.5 persistent slab avalanches were observed.

On March 5th, a size 3.5 persistent slab avalanche was observed.

Snowpack Summary

Strong SW winds have redistributed snow over a variety of surfaces 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

Sunday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -7 °C.

Ridge wind west: 20 km/h gusting to 95 km/h.

Freezing level at valley bottom.

Monday

A mix of sun and cloud with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -17 °C, High -14 °C.

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

Freezing level at valley bottom.

Tuesday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -17 °C, High -13 °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