Lawinenlagebericht

Northwest Coastal

Apr 15, 2018Avalanche Canada
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Archiviert · abgelaufen 8 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig
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Kernpunkte

Rising temperatures and sunny skies on Sunday will likely trigger loose wet avalanches on steep slopes facing the sun.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Sunshine may cause recently formed wind slabs to become more reactive to human triggers.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2
    When the sun comes out it will quickly weaken the new snow and cause loose wet avalanching on steep solar slopes.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

SUNDAY: Mostly sunny. Light northeasterly ridgetop winds. Alpine temperature +2. Freezing level rising to around 1400 m.MONDAY: Mostly sunny. Light northeasterly ridgetop winds. Alpine temperature 0. Freezing level around 1200 m.TUESDAY: Mostly cloudy with sunny breaks. Light southwesterly ridgetop winds. Alpine temperature -1. Freezing level around 1100 m.

Avalanche Summary

No new avalanches were reported in this region on Friday. On Wednesday, a size 2.5 persistent slab avalanche was remotely triggered by a group of skiers on a ridgetop from 10 m away. The avalanche failed on surface hoar about 70 cm deep on a north aspect at 1800 m. A size 2 wet slab was triggered by day-time warming in the same area near Bear Pass.

Snowpack Summary

10-20 cm of recent storm snow and strong variable winds have formed wind slabs on a variety of aspects at treeline and above.In the south of the region, two layers of surface hoar are buried approximately 70-100 cm deep. The layers are most prominent on north to east aspects and were buried early-March and mid-March. In the north of the region, these layers are around 40 cm deep.Bellow these March layers the mid-pack is generally well-settled and strong. However, shallower parts of the region, such as the far north, have weak sugary facets near the bottom of the snowpack.

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