Bulletin d’avalanche

Long Range Mountains

Mar 15 – 18, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
1 · Faible
Sous la limite
Sans niveau
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Points saillants

Use caution on north and east aspects in the alpine where new wind slabs could be found

Warming and rain on Monday and Tuesday will likely trigger a natural avalanche cycle

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    Rider triggerable wind slabs will likely be found in exposed terrain.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Keep your head up and look for cornices, they could fail during periods of strong solar. Cornices are a hazard on their own but can also trigger wind slabs on the slopes below.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    1–2

    Rain and warm temperatures will likely trigger widespread wet loose avalanches on Monday. Avoid avalanche terrain during this time.

Confidence

High

Avalanche Summary

One size 2, natural, wind slab avalanche was reported on Saturday in the Trout River Bowl. Check out the MIN for more details.

Snowpack Summary

The snowpack is highly variable; on exposed west aspects very little snow remains, on exposed north and east aspects new wind slabs could be found. These wind slabs will overlie a firm and supportive crust.

In sheltered terrain  at 500 m the snowpack is 100 to 130 cm deep. The mid and lower snowpack is strong and bonded.

Check out this MIN from the Tablelands for more info.

On Monday freezing levels will likely spike far above the hills. The snow surface will become wet on all aspects and elevations. Significant snowpack loss could occur.

Weather Summary

Saturday Night

Cloudy with 0 to 4 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -13 °C.

Sunday

Cloudy with 1 to 4 cm of snow. 10 too 30 km/h south ridgetop wind. Treeline temperature -2 °C.

Monday

Cloudy with 5 to 15 mm of rain. 50 to 70 km/h southwest ridgetop wind. Treeline temperature 8 °C.

Tuesday

Cloudy with up to 20 mm of mixed precipitation. 20 to 40 km/h southwest ridgetop wind in the morning and 20 to 40 km/h north ridgetop wind in the afternoon. Freezing level falling throughout the day, likely to sea level by late afternoon.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Use extra caution for areas that are experiencing rapidly warming temperatures for the first time.
  • The first few hours of rain will likely be the most dangerous period.

Régions couvertes