Avalanche Forecast
Issued: Mar 16th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs, Cornices and Loose Wet.
jsmith,
Avalanche Canada
⚠️ Avoid All avalanche terrain ⚠️Soaring freezing levels and solar radiation will result in a widespread natural avalanche cycle on Sunday.
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Summary
Confidence
High
Avalanche Summary
Numerous naturally triggered wet loose and persistent slab avalanches up to size 3(very large) were reported on all aspects at treeline and above on Friday.
Very large, natural avalanches are expected to continue to occur on Sunday.
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 are currently large and looming, and will become more unstable during periods of warming. See photo below.
80-150 cm below the snow surface, a widespread crust with weak facets overtop remains a concern for human triggering.
Weather Summary
Saturday Night
Clear skies. 10 km/h north ridgetop wind. Treeline temperature 5 °C. Freezing level 2600 m.
Sunday
Sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperature 10 °C. Freezing level 3500 m.
Monday
Sunny. 20 to 30 km/h west ridgetop wind. Treeline temperature 8 °C. Freezing level 3000 m.
Tuesday
Sunny. 20 to 30 km/h west ridgetop wind. Treeline temperature 7 °C. Freezing level 2700 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.
Problems
Persistent Slabs
A crust with weak facets overtop is down 80 to 150 cm. Very large natural and human triggered avalanches occurring on this layer are very likely on Sunday.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
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
Expected Size
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
Expected Size
Valid until: Mar 17th, 2024 4:00PM
