Bulletin d’avalanche

South Rockies

Mar 26 – 27, 2019Avalanche Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

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

The avalanche danger is currently trending with the appearance of the sun and afternoon warming. The danger is rated for the warmest part of the day.

Problèmes avalancheux

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Sunshine and air temperatures above 0 C can rapidly increase the likelihood of triggering loose wet avalanches.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Human triggering of large deep persistent slab avalanches remains possible; especially in rocky, alpine terrain with a shallow or highly variable snowpack depth.

Confidence

High - The weather pattern is stable

Weather Forecast

TUESDAY Night: Mainly cloudy  / light west wind  / alpine temperature -5 C / freezing level 1000 m WEDNESDAY: Mix of sun and cloud / moderate east wind / alpine temperature -3 C / freezing level 1600 mTHURSDAY: Mix of sun and cloud  / light east wind  / alpine temperature -2 C / freezing level 1700 mFRIDAY: Mix of sun and cloud / light to moderate  north wind / alpine temperature -1 C / freezing level 1900 m

Avalanche Summary

There are no reports of avalanche activity in the past few days.

Snowpack Summary

The prolonged warm spell has transitioned sun exposed slopes in the alpine and all aspects at treeline and below toward becoming moist or wet throughout. In these areas that have entered spring conditions, the avalanche hazard will fluctuate greatly depending on the strength of the overnight freeze and how quickly the snowpack is warmed up each day. Check out this guide to managing avalanche hazard during spring conditions HERE.In areas that remained more sheltered from the heat, like northerly aspects in the alpine, there may still be a dry snowpack with a well settled slab sitting on weak facets (sugary snow).Lower down in the snowpack, the base is composed of weak facets.

Régions couvertes