Bulletin d’avalanche

Lizard-Flathead

Apr 21 – 22, 2018Avalanche Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

When the sun comes out it will quickly weaken the new snow and cause loose wet avalanches on steep solar slopes.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5
    Flurries on Saturday may have formed small wind slabs on lee features at treeline and above.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2.5
    Sunshine and warming temperatures will increase the likelihood of cornice fall.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    When the sun comes out it will quickly weaken the new snow and cause loose wet avalanches on steep solar slopes.

Confidence

Low - Due to the number of field observations

Weather Forecast

SUNDAY: Mix of sun and cloud. Light west wind. Alpine temperature +2. Freezing level 2100 m.MONDAY: Sunny. Light southeast wind. Alpine temperature +3. Freezing level rising to 2500 m.TUESDAY: Sunny. Light southwest wind. Alpine temperature +10. Freezing level rapidly rising to 3200 m.

Avalanche Summary

No new avalanches were reported in this region. Avalanche reports have been limited due to very few information sources this time of year. If you have been out, please post your observations on the Mountain Information Network (MIN).

Snowpack Summary

Cornices are large and looming. Flurries and strong westerly winds may have formed small wind slabs at treeline and above. Below the surface there are numerous crusts in the upper 100 cm of the snowpack. The mid-pack is generally well settled and strong.A layer of sugary facets around a crust can be found near the bottom of the snowpack which has been dormant for some time. Large triggers, such as a falling cornice, or a major warm-up to the snowpack could trigger this layer.

Régions couvertes