Bollettino valanghe

Jasper

Mar 25 – 26, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

Thu
Fri
Alta quota
4 · Forte
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
Apri la mappa completa

In sintesi

The snowpack remains susceptible to human-triggered slides. Localized precip, wind, and warm temperatures will exacerbate the avalanche hazard.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2.5

    If triggered, expect to initiate lower weaker persistent layers creating a large avalanche.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2–3.5

    This avalanche problem is associated with a weak facet and crust layer buried at the end of January approximately 70cm down in sheltered areas. This includes a crust layer formed in early March below the recent storm snow which is prominent on solar aspects.

  • Loose Wet

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

    Most active from steep rocky terrain, may overload and trigger the slopes below.

Confidence

Moderate

Avalanche Summary

The field teams on the Parkway and Maligne report no new activity. Limited visibility above TL.

Of note, reports of large whumphs while traveling on skis are a good indication that the snowpack is still primed for triggering.

Snowpack Summary

In the Alpine: Wind slabs continue to build in lee features throughout the region. These slabs will overload the weak persistent slab and continue to produce large avalanches in the region.

Treeline and below: the 70-90 cm from earlier in March has settled into a supportive midpack. This bridges a complicated and reactive deep persistent weakness. Where the snowpack is shallow, the bridging is not strong and triggering a large avalanche is very possible.

Weather Summary

Overnight: Clear with Cloudy periods. Isolated precip. Low: -3°c, Mostly light SW winds.

Wednesday: Mix of sun and clouds. Alpine temp: 2 °c. Mostly light S-ly Freezing level: 2600m

Thursday: Flurries, accumulation: 10cm. Temps: Low -7°c, High 1°c. Freezing level: 2200m

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Remote triggering is a concern; avoid terrain where triggering overhead slopes is possible.

Regioni coperte