Bulletin d’avalanche

Kananaskis

Jan 29 – 30, 2013Alberta Parks
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Archivé · expiré 14 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

The arctic air will clear out and temps will rise but winds will rise as well so we can look forward to new soft slabs forming along ridge tops - there is still some loose dry snow available for wind transport.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    30-40cm thick hard windslabs are being encountered on north to southeast aspects at treeline and above. Expect wide propagations due to the hard nature of these slabs.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–3
    Variable thickness soft slabs .

Confidence

Good

Weather Forecast

The arctic ridge is weakening and warmer air will begin to push in from the west.  A few cm on new snow each day until Friday but no appreciable accumulations.

Avalanche Summary

No new avalanche activity observed on Tuesday.

Snowpack Summary

Snow survey flight today with 4 profiles completed....heavily faceted snowpack in areas below treeline with Nov crust still evident in some locations.  A mix of hard windslab from last weeks winds and thin softslabs from the storm snow later in the week.  The Jan 6 interface still showing up in compression tests in the hard range down 30-40+cm.  Old surface hoar found on this interface at a sheltered location at 2200m near the divide.

Régions couvertes