Lawinenlagebericht

Jasper

Jan 9 – 10, 2014Parks Canada
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Archiviert · abgelaufen 13 years ago

Lawinengefahr

Thu
Fri
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Avalanche control work is planned along Highway 93 on Thursday, January 9th from 12:00pm to 4:30pm. Travelers on Highway 93 north can expect delays of one to two hours at a time between Parker Ridge and just north of Saskatchewan Crossing.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    The upper snowpack is a stratified layer of multiple windslabs. Recent field tests have produced failures with moderate shear strength. Currently this condition is less prevalent at treeline. Forecasted snowfall and wind will increase this concern.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2–3
    Many avalanche paths have already slid in the 2,400 m - 2,800 m range. Slopes that have not failed are expected to fail with the increased snow loading and winds this weekend.

Weather Forecast

A moist southwesterly air flow will bring snow flurries and warming temperatures into the weekend with daytime highs on thursday and friday of +2 in the townsite area. In the Columbia Icefields area, winds are expected to pickup into the weekend along with snowfall amounts.

Snowpack Summary

Last weekend's storm snow overlies older wind slabs. In the alpine this newer snow has itself be blown into storm slabs which shear with easy to moderate force. The base of the snowpack is weak and unstable at all elevations. Near treeline the midpack is supportive and untracked powder can be found in wind sheltered locations.

Avalanche Summary

No new avalanche activity has been observed or reported in the past 72 hour. Increased loading with new snow and or wind will renew avalanche activity at treeline and above with full depth releases anticipated.

Confidence

Intensity of incoming weather systems is uncertain on Friday

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