Lawinenlagebericht

Kootenay Boundary

Mar 27 – 28, 2014Avalanche Canada
Auf der Karte ansehen
Archiviert · abgelaufen 13 years ago

Lawinengefahr

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

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–3
    Recent moderate southwest winds have created wind slabs in the lee of terrain features.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2–5
    The deeply buried weak layers continue to show "sudden" results in snowpack tests. Triggers for large avalanches on these layers include cornice falls, solar warming, or hitting the wrong place in a thin snowpack area.

Confidence

Fair - Forecast snowfall amounts are uncertain

Weather Forecast

Friday: Cloudy with scattered snow flurries. Freezing level 1400 m. Ridge winds moderate south.Saturday: Light snow flurries. Winds light southwest. Freezing level 1500mSunday: Light to locally moderate snowfall. Light southwest winds. Freezing level 1500m.

Avalanche Summary

Recent avalanche activity has been reported as loose dry and moist avalanches running to size 1.5 in steep terrain.

Snowpack Summary

New snow accumulations from the past week have settled out and become moist on the surface up to 2000m on all aspects. There is now 55 - 80cm of new snow on top of the March 10th crust. This crust is widespread to 2000m across the region, perhaps even higher on solar aspects. There are reports of the crust being as thick as 15cm in the south of the region, however there seems to be variability in how thick and supportive it is. As you head north in the region where the mountains are higher (temperatures were colder when the crust was forming) this crust is less likely to exist. If you are heading to the north of the region make sure you check out the South Columbia bulletin also.A facet/crust persistent weakness buried at the beginning of February, now down 70 - 200cm, has been highly variable in terms of reactivity but still shows 'sudden' results in some snowpack tests. In areas where the strong and supportive crust exists, triggering this layer has become unlikely. That said, any avalanches triggered on this deep persistent layer would be large and destructive.

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