Avalanche Forecast
Issued: Mar 29th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Wind Slabs.
MW,
Avalanche Canada
Wind slabs are slowly developing and the persistent slab problem remains a concern. Avoid shallow snowpack areas where triggering a persistent slab is most likely and be aware that even a small wind slab could step down, triggering a persistent slab.
Summary
Confidence
Avalanche Summary
No new avalanche activity reported on Friday.
A size 2 natural persistent slab avalanche was observed on Mt. Churchill on Monday.
On Sunday, 7 skiers remote triggered a size 2 slab from 100m away in the Boundary peak area. Avalanche occurred in a thin rocky spot, alpine, N aspect, 2250m elevation, 35 degree slope, and slid on the Feb 3rd facets/crust layer. The group triggered it from the bench above
Snowpack Summary
10cm of recent storm snow sits over a sun crust on solar aspects. Shaded aspects have up to 30cm of dry snow. The March 19 crust is buried 20-30cm deep and is present everywhere except North aspects above 1900m. The Feb 3rd crust interface is down 30-90cm. Basal depth hoar and facets make up the bottom of the snowpack. HS ranges from 50 to 150cm.
Weather Summary
Mountain Weather Forecast is available @ Avalanche Canada https://www.avalanche.ca/weather/forecast
Saturday Cloudy with sunny periods. No precipitation. Alpine high -6 °C. Ridge wind west 10-20 km/h. Freezing level 1500m.
Sunday Mix of sun & cloud. Alpine High -5 °C. Ridge wind west 10-20
Monday Cloudy with sunny periods/ isolated flurries. No precipitation. Alpine High -1. Wind west 15 gusting to 40.
Terrain and Travel Advice
- Conditions may have improved, but be mindful that deep instabilities are still present.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
- Be carefull around freshly wind loaded features.
Problems
Persistent Slabs
This problem seems to be most active where the March 19th crust is not supportive over the Feb 3rd weak layer (down 30-90cm) of facets over a crust. Northerly aspects between 1900-2400m seem to be the problem area. It is possible that this will step down to the deep persistent weak layer.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Wind slabs can be found in isolated locations in the alpine. These developing wind slabs are small in size but be aware that if triggered, they could trigger a persistent slab.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 30th, 2024 4:00PM
