Bulletin d’avalanche

South Coast Inland

Apr 1 – 2, 2021Avalanche Canada
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Archivé · expiré 6 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Watch for lingering wind slabs at upper elevations and take a wide berth around cornices.

Problèmes avalancheux

  • Wind Slabs

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

    Wind slabs from snow earlier in the week accompanied by strong wind exposed lee terrain may still linger in high elevation terrain.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–3

    Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. 

Avalanche Summary

Recent avalanche activity has been limited to thin wind slabs to size 1.5 and loose wet avalanches to size 1.5 from steep terrain facing the sun.

 

Confidence

High -

Weather Forecast

Thursday Night: Mainly cloudy. Ridgetop wind moderate southwest. Alpine temperatures near -7 and freezing levels 900 m. 

Friday: Cloudy with sunny breaks and isolated flurries. Ridgetop wind light to moderate southwest. Alpine temperatures near -4 and freezing levels 1400 m. 

Saturday: Cloudy with scattered flurries. Ridgetop wind light from the southwest. Alpine temperatures near -3 and freezing level 1500 m.

Sunday: Mix of sun and cloud. Ridgetop wind light northwest. Alpine temperatures near -5 and freezing level 1300 m. 

Snowpack Summary

40-60 cm of new snow blanketed the region by Monday morning. This has been redistributed by primarily southwest winds. Dry snow is likely found on higher elevation north facing terrain. The lower snowpack is strong and settled. The sun and warmer temperatures have likely impacted the snow surface on all aspects except high north.

Cornices along ridgelines are large and looming, especially after this storm. Avoid slopes with cornices overhead and give them a large berth while travelling along ridgelines. 

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes