Bollettino valanghe

South Columbia

Avalanche Canada
Vedi sulla mappa

Pericolo valanghe

Sun
Mon
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Open full map
Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Avoid exposure to steep slopes where the surface is soft and wet from the rain.

In the alpine, be aware of lingering wind slabs in lee features where dry snow can be found.

Problemi valanghivi

  • Wind Slabs

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

    Small wind slabs are expected to form in the alpine, where incoming precipitation could fall as snow.

  • Loose Wet

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

    A poor overnight freeze and light rain will break down the crust at treeline and below.

    Avoid exposure to overhead hazards where the surface is wet and the crust is fully broken down.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of warming will affect the snowpack.
  • We are uncertain if precipitation will fall as rain or snow.

Avalanche Summary

Two skier triggered windslabs were reported on northerly facing alpine slopes above 2500 m on Thursday. A large cornice failure was also reported in the region.

Wet loose avalanches may be reactive to human triggers on sun-exposed slopes. Use caution around cornices, especially during periods of sunshine.

Snowpack Summary

A widespread melt-freeze crust exists on most aspects and elevations. This crust may be supportive in the morning, but is expected to soften quickly through the day—especially at treeline and below.

Northerly alpine slopes above 2500 m still hold pockets of dry snow. Isolated wind slabs remain possible in lee features in the upper alpine.

Below treeline, high overnight temperatures may prevent a refreeze, resulting in a wet, isothermal surface.

Late March crusts are buried 10–80 cm deep, elevation and aspect dependent.

The mid and lower snowpack is well settled and strong.

Weather Summary

Friday Night
Clear skies. 10 km/h south ridgetop wind. Treeline temperature 4 °C. Freezing level 2500 m.

Saturday
Mostly cloudy. 2 to 4 mm of rain at treeline. 10 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2300 m.

Sunday
Mostly cloudy. 1 to 5 mm of rain at treeline. 10 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2200 m.

Monday
Mostly cloudy. 2 to 4 cm of snow at treeline. 20 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche danger will increase as the surface crust breaks down.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Be careful as you transition into wind-affected terrain.

Regioni coperte