Bulletin d’avalanche

North Rockies

Dec 26 – 27, 2024Avalanche Canada
Voir sur la carte
Archivé · expiré 2 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

New snow and strong winds will increase the potential for avalanches.

Look for areas of soft snow, sheltered from the wind to ride.

Problèmes avalancheux

  • Wind Slabs

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

    New snow may build more reactive deposits. Slabs may fail on the early December crust and facets producing larger avalanches.Watch for hollow or 'drum like' sounding snow near ridgelines and mid slope rollovers.

Avalanche Summary

No new avalanches have been recently reported.

The picture below shows current features of concern - We expect new and reactive wind slabs to form with Tuesday night's snowfall and wind.

Confidence

Low

Snowpack Summary

10 to 20 cm of new snow now hides the old heavily wind affected snow, with some slopes stripped from recent strong southerly winds.

In sheltered areas, a crust from early December sits below 30 to 50 cm of settling snow. This layer has produced avalanche activity and shown reactivity on testing. However, observations are limited in this region and the reactivity or distribution of this is not well understood.

There are no current deeper layers of concern.

Data is very limited in this region, please submit MIN reports if you head into the mountains. Any data or photos are helpful!

Weather Summary

Wednesday Night

Mostly cloudy with up to 3 cm of snow. 40 to 70 km/h southwest ridgetop winds. Treeline temperature -1 °C.

Thursday

Partly cloudy with up to 10 cm of snow. 20 to 30 km/h south ridgetop winds. Treeline temperature -3 °C.

Friday

Mostly clear skies. 20 to 40 km/h south ridgetop winds. Treeline temperature -5 °C.

Saturday

Mostly cloudy with flurries. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Expect slab conditions to change drastically as you move into wind-exposed terrain.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

Régions couvertes