Bollettino valanghe

South Coast

Apr 19 – 20, 2018Avalanche Canada
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Archiviato · scaduto 8 years ago

Pericolo valanghe

Sat
Sun
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Spring means extra caution on south-facing slopes. Avoid exposing yourself to hazard from large slopes or cornices overhead while its sunny or warm. And watch for pockets of wind slab in high alpine terrain.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2.5
    Warm temperatures and high freezing levels may weaken cornices. Give them a wide berth if traveling above or below them.
  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2
    Warm temperatures or a bit of sun on Friday may weaken the snow surface. Loose wet avalanches on steep southerly features and near rocks may be possible. Be aware that wet slides can quickly gain mass and grow large.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

TONIGHT: Increasing cloud. Ridge wind light, southwest. Temperature at treeline near +2. Freezing level 1500 m.FRIDAY: Mostly cloudy. Ridge wind moderate, south. Temperature at treeline near +1. Freezing level 1500 m lowering to 1000 m. Rain changing to snow beginning in the evening and overnight. Precipitation 30-40 mm. SATURDAY: Mostly cloudy, snow ending. Accumulation 5-10 cm. Ridge wind light to moderate, west. Temperature at treeline near -1. Freezing level 1200 m.SUNDAY: Sunny. Ridge wind light, northeast. Temperature at treeline near +3. Freezing level increasing to 1800 m.

Avalanche Summary

Earlier in the week, skiers could easily trigger small loose wet avalanches on Monday. Natural loose wet avalanches were also observed in treeline and alpine terrain, particularly on solar aspects. More details here.Over the weekend, large slab avalanches were also observed on the North Shore mountains that may have released during the storm last Friday. Read MIN report hereFurther north near Squamish reports indicated sun-induced natural activity on Sunday in alpine terrain.With information regarding avalanche activity and snowpack conditions becoming evermore sparse this time of year, we would very much appreciate it if you spend a moment to submit any observations you have to the Mountain Information Network here, even if it is just a photo. And we wish to thank those of you who have shared your recent observations. Thanks!

Snowpack Summary

Above about 1200 m, 30 to 60 cm of moist snow sits on a predominant crust that formed at the beginning of April. Below this the snowpack is well-settled and strong. Read more here.At lower elevations (~1000 m) a spring snowpack exists.

Regioni coperte