Lawinenlagebericht

Kootenay Boundary

Apr 26 – 27, 2014Avalanche Canada
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Archiviert · abgelaufen 12 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
Keine Stufe
Waldgrenze
Keine Stufe
Unterhalb
Keine Stufe
Vollständige Karte öffnen

Kernpunkte

We are no longer issuing danger ratings for this region due to a lack of field data.Please refer to this blog post for more insight into managing the current conditions.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–3
    New snow amounts are extremely variable across the region with the highest amounts falling in the south. Moderate winds have redistributed new snow and wind slabs may be found in lee features. Expect touchy conditions when the sun comes out.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–4
    Expect loose wet avalanches in steep terrain if it is raining or during sunny periods, especially if the sun or rain is affecting fresh snow.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely
    Größe
    3–5
    The potential for very large deep slab avalanches needs to remain on your radar. Cornice fall, warming temperatures or a smaller wet or wind slab avalanche in motion could act as triggers.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Sunday: A relatively cool unstable air mass will continue to bring showers or flurries to the region with light to locally moderate accumulations. Winds should remain light to moderate from the southwest with freezing levels hovering around 1600m.Monday: Scattered flurries are expected throughout the day, although some clearing is expected by late afternoon as a dry ridge of high pressure starts to develop. Winds are expected to be light from the northwest with freezing levels at about 1700m.

Avalanche Summary

Expect loose wet avalanches in steep terrain if it is raining or during sunny periods, especially if the sun or rain is affecting fresh snow. Spring squalls may bring locally heavy precipitation and new storm or wind slabs may develop in higher terrain if you see significant new snow accumulation. Cornices collapses have been reported during periods of daytime warming. Occasionally these heavy triggers have caused large deep slab avalanches on the slopes below.

Snowpack Summary

This is a broad general summary of conditions in the region based solely on recent weather data and previous snowpack information. It should be supplemented with local observations to help assess avalanche danger.Over the last few days we have seen moderate to locally heavy amounts of new snow mixed with showers or periods of rain below 1600-1800 m. Southwesterly winds have likely formed pockets of wind slab at higher elevations in lee of ridges and terrain features. The late January/early February persistent weak layer is deeply buried but could still wake up during periods of heavy precipitation (especially rain) or significant warming and solar radiation. Be particularly wary of this on large open alpine slopes. Cornices are large in some areas and should be given a wide berth.

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