Avalanche Forecast
Issued: Mar 8th, 2018 4:29PM
The alpine rating is Wind Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Forecast snowfall amounts are uncertain on Friday
Weather Forecast
FRIDAY: Flurries overnight Thursday into Friday, accumulation 10-20cm then a mix of sun and cloud through Friday / Light to moderate west wind / Alpine temperature -5 / Freezing level 700m SATURDAY: Mix of sun and cloud / Light south wind / Alpine temperature -1 / Freezing level 1400m SUNDAY: Mix of sun and cloud / Light to moderate south wind / Alpine temperature 6 / Freezing level 2200m
Avalanche Summary
Numerous loose wet avalanches were observed in steep south-facing terrain on Wednesday and Tuesday. Most were small (size 1), but a few in the Coquihalla reached size 2.
Snowpack Summary
New snow accumulating on Thursday into Friday has been redistributed by southerly winds at upper elevations. The new snow sits on a sun crust on steep south-facing slopes, cold dry snow on polar aspects, and wind affected snow at upper elevations.In northern parts of the region the mid-February weak layer is about 40 cm below the surface and has been reactive in some snowpack tests. The layer is composed of sugary facets, a sun crust on solar aspects, and surface hoar that is present at and below treeline. No recent avalanche activity has been reported on these layers. The snowpack is well settled in southern parts of the region (e.g. Coquihalla and Manning Park).Variable winds in the past month have created cornices on many alpine ridgelines. They will become touchier as they grow in size, as temperatures rise, and as the strong late-winter sun shines down upon them on clear days.
Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East, South East, South.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 9th, 2018 2:00PM