Bollettino valanghe

Sea To Sky

Avalanche Canada
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Pericolo valanghe

Tue
Wed
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Stay alert to changing conditions with aspect and elevation.

Cornice falls and wet avalanches remain a concern in the sun and warmth, while wind slabs linger on high north aspects.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2

    Wind slabs remain triggerable on high north facing slopes unaffected by the sun and rising temperatures.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    Cornices are large and fragile. Avoid travelling on or under them during the heat of the day.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely - Very Likely
    Dimensione
    1–2

    Rising temperatures and full sun will create ideal conditions for loose wet avalanches. Watch for likely trigger points, like rocky outcrops where warming is most intense.

Confidence

High

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.
  • We are confident the likelihood of avalanches will increase with the forecast weather.

Avalanche Summary

On Saturday, numerous wind slabs were reported in alpine north-facing terrain from rider and explosive triggers to size 1.5. South-facing slopes at all elevations produced natural and rider triggered wet avalanches, also to size 1.5.

On Friday, explosive avalanche control produced multiple large (size 2-2.5) cornice avalanches. There are also reports of extensive older loose wet avalanche debris in the Sky Pilot area.

Snowpack Summary

While overnight cooling may produce a surface crust, snow surfaces will rapidly become moist/wet with sunshine and rising temperatures. High north facing slopes may still hold dry, cold snow. Many operators are commenting on large cornices - give them a wide berth as temperatures rise.

A thick crust sits 80-100 cm deep. Near Whistler, some facets have been reported around this crust. The snowpack below the mid-March crust is wet but well settled and strong.

Weather Summary

Sunday Night
Clear skies. 20 km/h southwest ridgetop wind. Treeline temperature 7 °C. Freezing level 2700 m.

Monday
Sunny. 50 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2300 m.

Tuesday
Mostly sunny. 1 cm of snow. 30 km/h northwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1200 m.

Wednesday
Sunny. 10 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Regioni coperte