Lawinenlagebericht

Jasper

Jan 21 – 22, 2024Avalanche Canada
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Archiviert · abgelaufen 3 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

A couple of recent large avalanches along the Icefields Parkway are a reminder that if there is enough snow to ride there is enough snow to slide. Dig down and test the reactivity of the snowpack before you commit to a line or feature.

Lawinenprobleme

  • Wind Slabs

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

    Recent variable winds means there could be wind slabs on all aspects.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–3

    The recent Icefield's avalanches are on North to East aspects down 30cm on a suspected Jan 4th surface hoar or facet layer. This layer is only a concern if there is a supportive slab above it.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–3.5

    Triggering is possible in isolated features such as in steep rocky terrain. Watch for signs of whumphing and cracking.

Confidence

Moderate

Avalanche Summary

No field patrol on Saturday and nothing new reported. Thursday-Friday, several deep persistent slabs and persistent slab avalanches up to size 2.5 were observed in the alpine. As well as loose dry avalanches up to size 2 in very steep rocky alpine terrain with some scrubbing to ground.

Snowpack Summary

There is variable wind effect from previous northerly winds. Down 25cm is a weak layer that is producing results in snow pit tests. Tree line snowpack depth is an average of 45-75cm. The snowpack is weak and largely unsupportive.

Weather Summary

Sunday will be cloudy, flurries, -3 °C, light SW winds, and 1800 metres freezing level. Monday and Tuesday will be similar.

The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • Be carefull around freshly wind loaded features.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.

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