Bollettino valanghe

South Rockies

Jan 30 – 31, 2024Avalanche Canada
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Archiviato · scaduto 3 years ago

Pericolo valanghe

Thu
Fri
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato

In sintesi

A rain-soaked snowpack will continue to create dangerous avalanche conditions and poor riding quality.

Problemi valanghivi

  • Loose Wet

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

    Wet loose avalanche activity can be expected from steep terrain. These avalanches could entrain significant mass and gouge to ground in shallow snowpack areas.

  • Wet Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1.5–3.5

    Wet slab avalanches could fail on or step down to buried weak layers in the mid and lower snowpack resulting in very large avalanches.

Snowpack Summary

Rain has created a moist or wet upper snowpack at all elevations. A weak surface crust may have formed overnight at upper elevations.

There is a layer of sugary facets that are buried 30-50 cm deep and in some places sits on a crust from December. This layer has been reactive in snowpack tests.

The lower snowpack contains a series of crusts and faceted snow. Expect snow depth at treeline to be 70 to 120 cm.

Confidence

Moderate

Avalanche Summary

Observations have been limited, but we suspect a widespread natural avalanche cycle occurred over the past few days as rain impacted the snowpack.

If poor riding quality doesn't deter you on Tuesday, keep in mind that human-triggered avalanches remain likely. Avoid overhead exposure, large natural avalanches have the potential to entrain significant mass and run to valley bottom.

Weather Summary

Monday Night

Cloudy with clear periods, no new precipitation. Alpine wind southwest 20 to 70 km/h. Treeline temperature 2 °C, freezing level 2800 m.

Tuesday

A mix of sun and cloud, no new precipitation. Alpine wind sotuhwest 20 to 50 km/h. Treeline temperature 1 °C, freezing level 2500 m.

Wednesday

Sunny with cloudy periods, no new precipitation. Alpine wind wind from the southwest. Treeline temperature 2 °C, freezing level 3000 m.

Thursday

Cloudy with sunny periods, no new precipitation. Alpine wind light from the southwest. Treeline temperature 1 °C, freezing level 2500 m

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.
  • If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.

Regioni coperte