Bulletin d’avalanche

Waterton Lakes

Dec 4 – 7, 2020
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Archivé · expiré 6 years ago

Danger d’avalanche

Sat
Sun
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
Sans niveau
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Points saillants

The wind effected upper snowpack will be stressed by rapid warming caused by a strong temperature inversion in our area. Be mindful of your overhead hazard if you plan on venturing into the backcounty this weekend.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–1.5

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2

    This problem may be difficult to perceive with the strong temperature inversion keeping temperatures relatively cool at lower elevations. Be mindful of exposure to overhead hazard.

Weather Forecast

Alpine temperature inversion will be prevalent throughout the forecast period.

Thurs night- Freezing levels at valley bottom.

Friday- Mostly Sunny. Strong West wind in townsite, moderate at Cameron Lake. Alpine high of +5 with cooler temps at lower elevations.

Saturday- Sunny. Freezing levels above mt. top with inversion.

Sunday- Sunny. Alpine high 0.

Snowpack Summary

Wind transport has scoured SW aspects to ground in exposed alpine terrain. Northerly aspects & protected areas have wind slab 5-40cm thick over a melt freeze crust. Lower snowpack is beginning to facet below this crust.

Snowpack @ 2000m: Cameron Lake 80cm. Less than 30cm in rest of park. Below tree line elevation is under threshold snowpack height.

Avalanche Summary

No new avalanches observed.

Confidence

Régions couvertes