Lawinenlagebericht

Banff Yoho Kootenay

Apr 12 – 13, 2015Parks Canada
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Archiviert · abgelaufen 11 years ago

Lawinengefahr

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

Kernpunkte

Strong wind today is creating wind slabs at ridge crest in lee areas. Please read the explanation for spring conditions here.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Strong wind from the NW has created wind slabs on lee aspects up to 50cm thick. These are reactive to skier traffic and have been failing naturally in some locations. Expect sluffing in any steep terrain as well.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    2–3
    There have been many reports of cornice chunks falling off of ridge crests which may be big enough a load to trigger an avalanche on the basal facets, or be enough mass to be a hazard themselves.

Weather Forecast

Cool temps (-12 to -15 @ 3000m) and very light snow fall is expected over the next three days. Wind will remain strong at high elevations from the NW until late Monday.

Snowpack Summary

20-30cm of new snow over the weekend with gusty SW through NW winds has created wind slabs in lee areas above treeline. The new snow sits on a firm crust on solar aspects up to ridge crests and up to 2300m on N aspects. This buried crust provides a bridge over the basal facets which remain dormant.

Avalanche Summary

No avalanches observed or reported but the potential for triggering wind-slabs at ridge crest is definitely there today.

Confidence

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