Lawinenlagebericht

Kootenay Boundary

Feb 27 – 28, 2016Avalanche Canada
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Archiviert · abgelaufen 11 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Small wind slaps in steep or exposed terrain could have severe consequence.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Wind slabs will likely be small but could be consequential in exposed terrain with fall hazard.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–4
    Avoid cornice threatened slopes if sun comes out.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–4
    This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

Unsettled weather on Sunday with flurries amounting to 5-10cm. Ridgetop winds spike Sunday afternoon with strong southwesterlies, then die down for remainder of period. Freezing levels should remain under 1600m.

Avalanche Summary

On Friday numerous natural loose wet avalanches to size 2 were reported on steep solar aspects in the alpine.

Snowpack Summary

Sunday's snow will bury the widespread surface hoar being reported up to 20mm in size on shady aspects at all elevations throughout the region. The strong winds associated with Sunday's storm will build fresh wind slabs on lee features in alpine. Cornices are large and looming. The mid February layer is down 70-100cm and is the primary layer of concern. This layer is a crust and generally well bonded to the overlying persistent slab. However, in isolated areas on northerly aspects between 1800-2100m the layer is surface hoar which means there are still a few "land mines" out there that if triggered could produce large destructive avalanches.

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