Bollettino valanghe

South Columbia

Avalanche Canada
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Pericolo valanghe

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

In sintesi

High freezing levels and potential rain are keeping the danger elevated.

Watch for lingering high-elevation wind slabs, and avoid overhead hazards when the snow surface is wet.

Problemi valanghivi

  • Wind Slabs

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

    Triggering wind slabs may be possible along north through easterly sides of ridge crests and lee features where the snow remains dry, or new snow accumulates. Avoid travelling on or below cornices where possible.

  • Loose Wet

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

    Warm overnight tempertaures and potential rain are expected to melt the surface crust creating the potential for wet loose avalanches. Avoid exposure to overhead hazards where the snow surface is wet.

Confidence

Moderate

  • We are uncertain about forecast rain amounts.

Avalanche Summary

A small natural wet loose cycle has occurred over the past few days, generally in the size 1 range, with isolated cases of size 2 to 3 reported.

Additionally, two small skier-triggered wind slabs occurred on northerly alpine slopes above 2500 m on Thursday. Some cornice failures were also reported in the region.

Snowpack Summary

Soft, dry or wind-pressed snow can still be found on shady northerly through easterly slopes at upper elevations. These areas may have isolated lingering wind slabs.

All other slopes will have a widespread melt-freeze crust, which may soften and melt with daytime warming or rain, creating the potential for wet loose sluffing.

At lower elevations, warm overnight temperatures may prevent a refreeze, resulting in wet surface snow.

Crusts from late March are buried 10 to 80 cm deep, elevation and aspect dependent.

The mid and lower snowpack is well settled and strong with no additional layers of concern.

Weather Summary

Saturday Night
Partly cloudy. 0 to 5 mm of precipitation as snow or rain at treeline. 10 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level falling to 2150 m.

Sunday
Partly cloudy. 0 to 5 mm of rain at treeline. 10 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level rising to 2400 m.

Monday
Mix of sun and clouds. 0 to 8 mm of precipitation as snow or rain at treeline. 20 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level around 2300 m.

Tuesday
Mostly cloudy. 5 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level around 1800 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.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Carefully evaluate steep lines for wind slabs.
  • Use appropriate sluff management techniques.

Regioni coperte