Lawinenlagebericht

Lizard-Flathead

Apr 14 – 15, 2018Avalanche Canada
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Archiviert · abgelaufen 8 years ago

Lawinengefahr

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

Rising temperatures and the chance for a bit of sunshine on Sunday may be enough to trigger loose wet avalanches on steep slopes facing the sun.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Recent storm snow and strong winds have formed wind slabs in leeward areas near ridge crests and on convex features which may be 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 - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

SUNDAY: Mostly cloudy with sunny breaks. Moderate southwesterly ridgetop winds. Alpine temperature +5. Freezing level rising to around 2000 m.MONDAY: Snow, accumulation 10-20 cm. Moderate to strong southeasterly ridgetop winds. Alpine temperature +2. Freezing level around 1500 m.MONDAY NIGHT: Snow, accumulation 10-15 cm. Moderate southwesterly ridgetop winds. Freezing level around 1000 m.TUESDAY: Snow, accumulation 5-10 cm. Moderate westerly ridgetop winds. Alpine temperature +1. Freezing level around 1500 m.

Avalanche Summary

Several naturally triggered wind slabs up to size 2 were reported near Fernie on Friday.

Snowpack Summary

10-20 cm of recent storm snow and moderate winds have formed wind slabs sitting on hard crusts on lee features at treeline and above which may be reactive to human triggers. The upper snowpack contains numerous crusts.The mid-pack is generally well settled and strong.A layer of sugary facets around a crust can be found near the bottom of the snowpack which has been inactive for some time. This layer may be triggered by large triggers, such as a falling cornice, or by a major warm-up to the snowpack.

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