Bulletin d’avalanche

Jasper

Feb 2 – 3, 2019Parks Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

Sun
Mon
Alpin
4 · Fort
Limite forestière
4 · Fort
Sous la limite
4 · Fort
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Points saillants

Highway 93N, Icefields Parkway is Closed from Athabasca Falls to Sask River Crossing. Expected opening for both: Saturday at 18:00. (low confidence) Check Alberta511 for latest updates

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5
    Avoid avalanche terrain until the storm subsides and the snowpack can settle.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1.5–3.5
    New snow may overload the deep persistent weakness. Avoid avalanche terrain.

Weather Forecast

Periods of snow, at times heavy. Accumulation in Icefields: 18cm overnight Thursday, with a further 20cm on Friday; 8 -10cm Saturday. Temps drop over the day Saturday with an overnight low of -28. Valley bottom freezing levels. Mostly light SW winds, gusting at ridge tops. A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Forecasted storm snow over this weekend, 18cm at the time of report, (potentially a further 30cm), will change everything. The existing upper snow pack continues to settle over surface hoar, now down 30cm. Solar aspects have buried surface sun/temperature crusts at TL and below. Below that, a strong mid-pack sits over a deep persistent weakness.

Avalanche Summary

Poor visibility through the forecast region. No new avalanches observed or reported. Help forecast - share observations HERE, on the Mountain Information Network!

Confidence

The weather pattern is stable

Régions couvertes