Bulletin d’avalanche

Northwest Inland

Feb 24 – 25, 2019Avalanche Canada
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Archivé · expiré 8 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Outflow winds continue to redistribute loose snow. Human triggered avalanches remain likely where fresh slabs have formed in exposed terrain. The best riding will be in sheltered areas out of the wind.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    15-30 cm of recent snow is being blown into reactive slabs on a variety of aspects. Strong outflow winds will continue to redistribute loose snow building fresh wind slabs over recent storm slabs. Expect the most reactive deposits in exposed terrain.

Confidence

Moderate - Wind effect is extremely variable

Weather Forecast

SUNDAY NIGHT: Clear. Alpine temperatures near -15C. Ridgetop winds moderate from the east-northeast.MONDAY: Sunny with cloudy periods. Alpine temperatures near -14C. Ridgetop winds moderate to strong from the east.TUESDAY: Sunny with cloudy periods. Alpine temperatures near -12C. Ridgetop winds moderate gusting strong from the east.WEDNESDAY: Mix of sun and cloud. Alpine temperatures near -6C, freezing level rising to 800 m. Ridgetop winds light to moderate from the northeast.

Avalanche Summary

On Saturday, small size 1 avalanches were spotted in wind-pressed features, the new snow has likely formed fresh wind slabs at upper elevations. Loose dry sluffing is also occuring in steep terrain.A few small wind slab avalanches were triggered by skiers and naturally on Wednesday. They were on all aspects, in steep terrain, and at treeline and alpine elevations. The slabs were generally 10 to 20 cm deep.

Snowpack Summary

The storm that began on Thursday delivered 15 to 30 cm of fluffy low density snow by Saturday morning. Over the weekend, winds shifted from west to east, expect to find new wind slabs on varied aspects, as well as in cross-loaded terrain features. In sheltered areas at and below treeline, the new snow has buried pockets of feathery surface hoar crystals and soft, faceted snow.In the south of the region, the lower snowpack is well-settled. In the north of the region, around 50 cm of snow may overly a weak layer of surface hoar or faceted grains.

Régions couvertes