Avalanche Forecast
Issued: Mar 6th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
Mark Herbison,
Watch for small pockets of wind slabs that could potentially form in the alpine from the moderate North West winds as the cold front pushes into the region.
Good snow quality found on sheltered polar aspects.
Summary
Weather Forecast
Don't put those down layers away just yet! A cold front will slither its way down from the North starting Monday afternoon dropping temps down to -20 by Wednesday
Monday will see a mix of sun and cloud with snow flurries (1-5cm). Ridge top winds 25-40km/hr from the North-West and an alpine high of -7. Clear skies and cold temps for Tuesday and Wednesday.
Snowpack Summary
40cm of settling snow sits on top of the Feb 26th interface of small surface hoar in sheltered areas and a crust on steep solar aspects. A surface crust exists up to ~1500m on all aspects and higher on solar aspects. Soft, dry snow snow can be found in sheltered areas on Northerly terrain features.
Avalanche Summary
Several skier accidental avalanches in the size 1.5 range over the last few days, which likely involved the Feb 26th interface.
A size 2.5 natural cornice failure triggered a decent sized slab above the Little Sifton Traverse exit on Saturday.
Confidence
Timing or intensity of solar radiation is uncertain on Monday
Problems
Persistent Slabs
The recent snow has settled into more of a cohesive slab and buries small surface hoar in sheltered areas and a sun crust on steep solar aspects. There have been a few small skier triggered avalanches on this layer over the last few days.
- Persistent slabs may be more sensitive to human triggering on solar asp where they sit on sun crust
- Pay attention to overhead hazards like cornices which could easily trigger persistent slabs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 7th, 2022 4:00PM
