Lawinenlagebericht

Kootenay Boundary

Feb 15 – 16, 2013Avalanche Canada
Auf der Karte ansehen
Archiviert · abgelaufen 14 years ago

Lawinengefahr

Sun
Mon
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
    Strong winds have loaded lee features on a potentially weak interface.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–3
    A reactive weak layer is buried in the upper slab. As more snow arrives, I expect this will become a focus for avalanche activity, especially on unsupported (convex) terrain features.

Confidence

Fair - Forecast snowfall amounts are uncertain

Weather Forecast

Synopsis: A frontal system moves through the region on Saturday and is replaced by a ridge of high pressure.Saturday: 5-15 cm new snow. Ridgetop winds 40 km/h from the west, gusting to 60 km/h. Freezing level 1500 m.Sunday: Light snow, 2-5 cm. Winds 30 km/h from the northwest, diminishing in the afternoon. Freezing level 800 m.Monday: Flurries. Light winds. Freezing level around 1000 m in the afternoon.

Avalanche Summary

No recent avalanches have been reported from this region.

Snowpack Summary

5-15 cm of recent snowfall (possibly a little more near Kokanee Glacier Park) overlies a recent layer of surface hoar buried around Feb 12. We have had some reports this layer contains crystals up to 30mm in some locations. This large size of crystal increases the likelihood this layer will present problems as it becomes more deeply buried. Wind slabs are widespread in exposed areas. Two previous buried surface hoar/facet/sun crust layers from Feb 4th and Jan 23 are still being tracked by professionals but have not been reactive recently. They can be found approximately 30 cm and 50 cm below the surface, respectively. These layers may be worth investigating on a safe but representative adjacent slope if you are considering riding in aggressive terrain.

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