Bollettino valanghe

Coquihalla

Dec 7 – 8, 2023Avalanche Canada
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Archiviato · scaduto 3 years ago

Pericolo valanghe

Sat
Sun
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Storm slabs in the alpine may be reactive to rider triggering.

Stable avalanche conditions exist wherever a thick surface crust is present

Problemi valanghivi

  • Storm Slabs

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

    Be on the look out for fresh storm and wind slabs anywhere that a thick crust on the surface doesn't exist.

Confidence

Moderate

Avalanche Summary

On Tuesday, numerous natural wet slab and wet loose avalanche activity was seen from 1200-1500 m. Storm slabs may exist in the alpine and be reactive to rider triggering at upper elevations where a surface crust does not exist.

If you're heading out in the backcountry, please consider sharing any observations on the Mountain Information Network

Snowpack Summary

At treeline and above 5 to 15 cm of new snow sits above a widespread crust and may show a poor bond. The new snow tapers with elevation loss but the surface crust continues to exist below treeline. This crust should provide a bridge over any previous layers of concern deeper in the snowpack.

Weather Summary

Wednesday Night

Mostly cloudy with isolated flurries. Light wind from the northwest and alpine temperatures near -2°C. Freezing levels near 1000 m.

Thursday

Cloudy with isolated flurries. Alpine winds 10 to 15 km/h from the west. Treeline temperature near -1°C, and freezing level 1000 m.

Friday

Mostly cloudy. Alpine winds 15 to 20 km/h from the southwest and temperatures -6°C. Freezing levels near 500 m.

Saturday

Next frontal system to arrive, bringing strong south winds, snow amounts 20-30 cm at upper elevations. Freezing levels near 1200 m.

 

 

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid areas where the snow feels stiff and/or slabby.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

Regioni coperte