Lawinenlagebericht

Lizard-Flathead

Mar 10, 2018Avalanche Canada
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Archiviert · abgelaufen 9 years ago

Lawinengefahr

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

Sunshine and warming will increase hazard throughout the weekend. Natural loose wet avalanches are expected on steep south facing slopes and lingering storm slabs reactive to human triggers.

Lawinenprobleme

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Storm slabs are expected to still be reactive to human triggers on Saturday.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely - Very Likely
    Größe
    1–2
    Forecast sunshine is expected to trigger loose wet avalanches on steep south facing slopes.

Confidence

High -

Weather Forecast

SATURDAY: Sunny / Light southwesterly ridgetop winds / Freezing level rising to around 1500 m.SUNDAY: Mostly sunny / Light southwesterly ridgetop winds / Freezing level rising to around 2000 m.MONDAY: Sunny / Light southwesterly ridgetop winds / Freezing level rising to around 2300 m.

Avalanche Summary

Several size 2 natural storm slab avalanches and numerous human triggered storm slabs up to size 1.5 on all aspects and elevations were observed near Fernie on Thursday.

Snowpack Summary

20-30 cm of new snow is sitting on a sun crust on solar aspects. Cornices are large and prone to failure over the weekend caused by forecast sunny skies.In the upper to mid snowpack, a surface hoar or facet layer buried mid-February is now 80 to 110 cm below the surface on sheltered northerly aspects. Deeper in the snowpack, the widespread mid-December and late November weak layers are composed of a combination of crusts and sugary facets which are down 200-300 cm.  These layers have been dormant but may be awoken by the warm and sunny weather over the weekend or by a large trigger such as a falling cornice.

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