Bollettino valanghe

South Rockies

Avalanche Canada
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Pericolo valanghe

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

In sintesi

Large avalanches are becoming more likely due to a buried weak layer and warm temperatures.
Choose conservative terrain and avoid exposure to overhead avalanche terrain.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3

    Cornices may start to fail as the temperature rises and the sun comes out. Avoid travelling under them.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    2–3

    Facets have developed over a crust formed after the atmospheric river. This layer is now buried 50 to 70 cm deep and has produced a recent large avalanche and has been reactive in snowpack tests.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–1.5

    Wet loose avalanches may occur as the temperature rises and the sun heats the snow.

Confidence

Moderate

  • Persistent slabs could become more likely with the forecast weather.

Avalanche Summary

On Friday, a large (size 2.5) persistent slab was accidentally triggered in The Gorge near Elkford. The rider deployed an airbag and was found and extracted quickly by their riding partners. Read the full report here.

On Thursday, numerous large (size 2) storm slabs were reported. As well as many small wet loose avalanches from slopes in the sun.

Snowpack Summary

Slopes facing the sun will likely have a thin crust on top. In shaded areas, soft surface snow has likely been redistributed into wind slabs in exposed areas.

A crust that formed after the atmospheric river in early March is down 50 to 70 cm, and weak facets have been observed over the crust.

Below this, the snowpack is generally well consolidated with facets at the base of the snowpack in shallow areas near Elkford.

Weather Summary

Saturday Night
Mostly clear skies. 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.

Sunday
Mix of sun and clouds. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2400 m.

Monday
Mix of sun and clouds. 30 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2800 m.

Tuesday
Mix of sun and clouds. 5 to 15 mm of rain or snow. Snowline is 2300 m overnight, dropping to 1000 m by the end of the day. 50 km/h west ridgetop wind. Treeline temperature 1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Even brief periods of direct sun could produce natural avalanches.
  • Start your day early and be out of avalanche terrain during the heat of the day.

Regioni coperte