Avalanche Forecast
Issued: Apr 6th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Loose Wet and Deep Persistent Slabs.
Darren vonk,
New snow and strong to extreme winds will keep the avalanche danger elevated. A good time to seek sheltered tree skiing
Summary
Weather Forecast
The weather is changing!
Up to 30cm is forecasted over the next 4 days, with Thursday being the snowiest.
Winds are picking up to the 70km/h range from the SW and temperatures slowly dropping to -11 by Thursday.
Snowpack Summary
HST of 10-30cm has settled to about 10cm of snow. Increasing winds forming isolated wind slabs in open TL and ALP. The snowpack shows good bonding in field tests in deeper snowpack areas, shallow snowpack regions such as Whistler/Portal and Bald Hills have bigger a potential for weak layers to wake up and are more complex to assess.
Avalanche Summary
A road patrol south today noted no new avalanches. However with the increasing winds, Snow transport was observed at ridge tops.
Confidence
Problems
Wind Slabs
Significant snow is available for transport at all elevations, with an additional 30cm in the forecast you can expect wind slabs to be reactive to human triggering.
- Be careful with wind loaded pockets, especially in steep confined alpine terrain.
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Freezing levels are expected at about 1700 meters. Places like Parkers ridge will most likely see dry snow. Further down the highway by Weeping wall could see a mix of snow and rain.
- Use extra caution on slopes if the snow is moist or wet.
Aspects: South East, South, South West, West.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
When in the Whistlers/Portal and Maligne Regions identify and assess snowpack, especially in thin shallow areas
- Pay attention to overhead hazards like cornices which could trigger slabs.
- If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 7th, 2021 4:00PM
