Bulletin d’avalanche

South Rockies

Mar 28 – 29, 2026Avalanche Canada
Voir sur la carte
Archivé · expiré 6 months ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Looks like another windy day on Sunday, but there might not be much snow left to transport. Seeking out sheltered powder will help you steer clear of lingering wind slabs.

Problèmes avalancheux

  • Wind Slabs

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

    20 to 30 cm of recent snow and moderate southwest winds formed wind slabs at upper elevations. These slabs are most likely to still be reactive on steep, leeward features immediately below ridgetop.

Confidence

High

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.

Avalanche Summary

No new avalanches were reported on Thursday or Friday. However, observations in this region are quite limited.

If you are heading into the backcountry, please consider sharing conditions by posting a MIN.

Snowpack Summary

Melt-freeze crust has likely formed on many solar aspects. Surfaces otherwise consist of 20 to 30 cm of recent snow, affected by extreme southwest winds, which either formed wind slabs on lee aspects or stripped windward slopes to the crust below. Lingering wind slabs are most likely to be reactive on steep slopes immediately below ridgetop.

The recent snow sits on a thick crust and the snowpack below is moist to ground and well settled in most locations. Northerly aspects in the alpine may still be an exception.

The snowpack depth tapers rapidly at lower elevations.

Weather Summary

Saturday Night
Mostly cloudy. 30 to 50 km/h southwest ridgetop wind, increasing. Treeline temperature falling to -5 °C as freezing level dives from 2300 m to valley bottom, briefly.

Sunday
Mostly cloudy with evening flurries starting with a trace of new snow. 50 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Monday
Mostly cloudy with overnight flurries easing, leaving 10 to 20 total cm of new snow. 10 to 20 km/h variable ridgetop wind after 20 to 60 km/h southwest wind overnight. Treeline temperature -8 °C.

Tuesday
Sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes