Avalanche Forecast
Regions: Northwest Inland.
Confidence
Fair - Intensity of incoming weather is uncertain
Weather Forecast
The region will stay mostly dry on Friday with freezing levels remaining at valley bottom. Expect moderate westerly winds. Over the weekend, a storm system will bring around 10 cm new snow on Saturday and 15-20 cm on Sunday. Freezing levels will go up to around 600 m on Saturday and could go up to 1500 m on Sunday. Winds will continue to be strong from the southwest.
Avalanche Summary
A natural avalanche cycle up to size 2 was reported from the region affecting all aspects. Avalanches were initiating in the storm snow.
Snowpack Summary
New snow and strong winds have set up fresh wind slabs at higher elevations, mainly on north through east aspects in exposed lee terrain--these are likely triggerable by riders on sleds or on skis. Lower down, a rain crust exists up to approximately 1000 m. There is now approximately 80 to 120cms of storm snow sitting above a surface hoar/crust/facet layer that was buried mid-December. The increasing depth of this weak layer makes it difficult to trigger; however, I wouldn't ignore this layer yet, as it could still be triggered by large loads such as rapid loading by new snow or rain or cornice falls. It could also be triggered by riders in shallow snowpack areas or where rocks poke up near the surface. The mid- and lower snowpack layers are well consolidated and generally strong.
Avalanche Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 2 - 6
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible - Likely
Expected Size: 1 - 5
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible
Expected Size: 2 - 6