Bollettino valanghe

Jasper

Jan 7 – 8, 2020Parks Canada
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Archiviato · scaduto 7 years ago

Pericolo valanghe

Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

Up to 15cm of new snow forecasted Tuesday afternoon. Careful terrain considerations will be key to avoiding involving yourself in an avalanche. Avoid wind loaded features underfoot, or those that are overhead.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3

    Widespread wind effect at treeline and above. Consider avoiding terrain which is thin to thick and/or significant overhead wind loaded features.

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

    Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3

    This weakness could be triggered by large loads or from thin spots in the snowpack. All explosive triggered avalanches today at treeline and below failed on or close to the ground.

Weather Forecast

Cooler temperatures, light winds and high overcast will continue into Tuesday morning. Tuesday afternoon tempratures will warm and up to 15cm's of new snow may fall with winds shifting slightly to come from the south. Mid to late in the week it will cool again with a clearing trend

Visit CAA's Mountain Weather Forecast for more specific details.

Snowpack Summary

Up to 30cm of settling new snow below treeline overlies buried surface hoar up to 2200m in sheltered areas. Moderate SW winds continue to build on existing wind slabs on lee features at treeline and above. The bottom of the snowpack consists of well developed facets, depth hoar, and decomposing crusts.

Avalanche Summary

No new natural avalanche activity observed or reported today due to limited field observations. In the last 48 hours some natural activity was noted up to size 3 out of steep alpine features. Explosive triggered avalanches up size 2.5 failing at ground from avalanche control conducted January 5th

Confidence

Intensity of incoming weather systems is uncertain

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