Avalanche Forecast
Issued: Jan 31st, 2016 8:40AM
The alpine rating is Storm Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
High
Weather Forecast
Freezing levels at or near valley bottoms for the forecast period. Overcast with flurries and light winds overnight. Overcast with light winds and a chance of flurries on Monday. Light winds with some sunny breaks on Tuesday. A system is forecast to move inland from the coast on Wednesday, expect increasing southwest winds, rising freezing levels, and light precipitation.
Avalanche Summary
There were a couple of natural size 2.0 avalanches reported in the Rossland range that happened on Saturday. Some small natural wind slab or storm slab avalanches up to about 20 cm deep were reported on Saturday from the south of the region. On Friday a couple of operations reported natural slab avalanches up to size 2 that were releasing as pockets of wind slab or thin storm slab. Explosives controlled avalanches up to size 2.0 releasing in the storm snow were also reported on Friday. No new reports of any avalanches releasing down to the persistent weak layers.
Snowpack Summary
Most areas in the region had 3-5 cm of new snow on Sunday morning, the outlier was the southern Monashees in the west of the region where they had 26 cm of new snow overnight. The total recent storm slab of 20-30 cm (in most of the region) may be sitting on a layer of surface hoar that was buried on January 27th, or on top of one or two thin freezing rain crusts up to about 2100 metres. Some areas report that previous strong winds destroyed this new layer of surface hoar, and may have stripped the old surface back to a hard rain crust before the new storm snow arrived. The persistent weak layer that was buried January 4th is now down 80-120 cm and continues to give sudden planar fractures in snowpack tests in some areas.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 1st, 2016 2:00PM