Bulletin d’avalanche

Kootenay Boundary

Apr 20 – 21, 2019Avalanche Canada
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Archivé · expiré 7 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

Rain soaked wet slabs releasing on hard crusts remain possible until temperatures cool.

Problèmes avalancheux

  • Loose Wet

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

    If temperatures remain warm, loose wet avalanches are still possible with strong solar radiation.

  • Wet Slabs

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

    If temperatures remain warm, wet slabs releasing on crust layers are still possible.

Avalanche Summary

No new avalanches were reported in this region on Friday. However, it is likely that numerous natural loose wet avalanches occurred during the storm on Friday at treeline and above.

On Tuesday, a party skiing near Kootenay Pass reported "whumphing" on solar aspects near ridgetops and triggered a size 2 storm slab avalanche sitting on a crust on a north aspect at around 2000 m. See the MIN report HERE.

Snowpack Summary

Rain to mountain-tops Thursday night has soaked 20-40 cm of recent snow and initiated a loose wet avalanche cycle at treeline and above.

Below treeline, the snow is disappearing rapidly.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

SATURDAY NIGHT: Clear / Light, northerly winds / Alpine low -1 C / Freezing level 2100 m.

SUNDAY: Sunny / Light, northwesterly winds / Alpine high 7 C / Freezing level 2500 m.

MONDAY: Mix of sun and cloud / Light, southwesterly winds / Alpine high 7 C / Freezing level 2500 m.

TUESDAY: Cloudy with alpine flurries; 2-5 mm. / Moderate, southwesterly winds / Alpine high 4 C / Freezing level 2400 m.

Régions couvertes