Lawinenlagebericht

Jasper

Dec 3 – 4, 2022Avalanche Canada
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Archiviert · abgelaufen 4 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Early season conditions still exist in the Icefields Parkway. Ski with caution as the depth of snow is variable and shallow in many areas. Be on the lookout for wind slab in the Alpine and pay attention to signs of instability such as cracking and whumpfing as there is a persistent weak layer buried 25-30 cm below the surface.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2.5

    Limited observation in the Alpine. Marmot Basin Ski area reports surface hoar extending into some alpine features. Solar crust on south aspects is also of concern. Dig and assess this layer before commiting to terrain.

  • Loose Dry

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5

    Use caution in steep and/or confined terrain features.

Terrain and Travel Advice

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

Snowpack Summary

In the Alpine, previous surface snow has been redistributed by winds from a variety of directions creating pockets of wind slab up to 20 cm thick near ridge top and on cross loaded features. There is a buried layer down 25-30cm that consists of Surface Hoar, Facets, and Sun Crust. Snow depth ranges from 40-100cm.

Weather Summary

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: High -5 °C.

Ridge wind north: 10-25 km/h.

Freezing level: 1400 metres.

Monday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: Low -20 °C, High -14 °C.

Ridge wind northwest: 10-25 km/h.

Freezing level at valley bottom.

More details can be found in the Mountain Weather Forecast.

Confidence

Moderate

Avalanche Summary

Sunday

Field teams observed no new avalanche activity in the last 48 hrs. Two old Loose Dry, Size 1 avalanches where noted in the Parkers Ridge area.

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