Avalanche Forecast
Regions: Akamina, Bull, Crowsnest North, Crowsnest South, Elkford East, Elkford West, Flathead, Lizard, Lizard-Flathead, South Rockies.
⚠️ Avoid All avalanche terrain ⚠️Soaring freezing levels and solar radiation will likely continue to produce very large naturally triggered avalanches.
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Confidence
High
Avalanche Summary
Numerous naturally triggered wet loose and persistent slab avalanches up to size 2.5 (very large) were reported on all aspects at treeline and above on Saturday. See MIN
Very large, natural avalanches are expected to continue to occur on Monday.
Snowpack Summary
High freezing levels overnight will result in no overnight re-freeze of the snow surface. As a result, the avalanche danger will rise rapidly throughout the day.
Cornices have become large and looming, and are more likely to fail during periods of warming.
A widespread, hard crust down 80-200 cm with weak facets above continues to be the primary layer of concern for natural and human triggering of very large persistent slab avalanches.
Weather Summary
Sunday Night
Clear skies. 20 to 30 km/h northeast ridgetop wind. Treeline temperature 4 °C. Freezing level 3100 m.
Monday
Sunny. 20 to 30 km/h west ridgetop wind. Treeline temperature 10 °C. Freezing level 3100 m.
Tuesday
Mix of sun and cloud. 10 to 20 km/h south ridgetop wind. Treeline temperature 3 °C. Freezing level 2200 m.
Wednesday
Mix of sun and cloud. 40 to 50 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2200 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid all avalanche terrain during periods of intense solar radiation.
- Only the most simple non-avalanche terrain free of overhead hazard is appropriate at this time.
- If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.
- Cornice failure may trigger large avalanches.
Avalanche Problems
Persistent Slabs
A crust with weak facets overtop is down 80 to 200 cm. Very large natural and human triggered avalanches occurring on this layer are very likely on Monday.
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Very Likely
Expected Size: 2 - 4
Cornices
Cornices are large, looming and will likely trigger very large persistent slab avalanches when they fail.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood: Very Likely
Expected Size: 2 - 3.5
Loose Wet
If triggered loose wet avalanches may step down to deeper layers, resulting in very large avalanches.
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Very Likely
Expected Size: 1 - 2.5