Bollettino valanghe

Jasper

Apr 15 – 16, 2021
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Archiviato · scaduto 5 years ago

Pericolo valanghe

Sat
Sun
Alta quota
Senza grado
Limite del bosco
Senza grado
Sotto il limite
Senza grado

In sintesi

Due to significant seasonal warming and solar, road closures are possible at short notice.

Hazard will cycle with the daily, diurnal swings in temps through the weekend. Avalanches are anticipated on all aspects and elevations in the forecast region

Problemi valanghivi

  • Cornices

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

    Cornices are awake! These features are extremely large, dense and heavy and will likely trigger the deeper instability on the slope below. If you must travel near or below cornices, use good travel techniques and group management to reduce exposure.

  • Loose Wet

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

    Rapidly rising temperatures and strong solar radiation making this a variable but significant problem at all elevations and aspects. Start early and finish early to avoid the highest hazard period, early afternoon through to dark.

  • Deep Persistent Slabs

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

    Forecasters are noting an increase in activity; seeing many larger slides, stepping down to ground or ice. Shallow snowpack areas and solar aspects have increased potential for human triggered and natural avalanches stepping to deeper layers.

Weather Forecast

High pressure continues over Northern BC and Alberta, rapidly establishing spring conditions in the region, including the Icefields Parkway. Positive daytime temperatures, light winds, strong solar and rising freezing level to as high as 3000m can be expected daily and for the near future.

Snowpack Summary

Spring has Sprung! Expect a crust on solar aspects that will break down early in the day; polar aspects at TL and above may hold dry snow depending on freezing level. Persistent intense solar and warm temps will continue to destabilize snowpack structure increasing the likelihood of natural and human triggered avalanches.

Avalanche Summary

Loose wet and persistent slab avalanche activity observed on all aspects up to size 3 throughout the region. Icefalls, seracs and cornices continue to fail and trigger deeper instabilities.

Confidence

Regioni coperte