Expect to see reactive storm slab conditions, especially in wind loaded areas. Choose conservative terrain and avoid overhead hazard.
30-60 cm sits on a buried weak layer that consists of facets, surface hoar, or a crust, depending on location. Avalanches on this layer may propagate widely.
Storm slabs will likely continue to be reactive on Tuesday, especially in wind loaded areas.
MONDAY NIGHT - Flurries, 10-15 / moderate to strong southwest wind / alpine low temperature near -6 / freezing level 1000-1500 m and dropping back down to valley bottom overnight in most areas
TUESDAY - Flurries, 5 cm / moderate southwest wind / alpine high temperature near -8
WEDNESDAY - Mainly sunny / light northwest wind / alpine high temperature near -9
THURSDAY - Mainly cloudy with a few flurries / moderate to strong southwest wind / alpine high temperature near -6
Reactive storm slabs are expected to be widespread on Tuesday, and human triggered avalanches are likely, especially in wind loaded areas.
At the time of publishing, there were a few reports of size 1-2 natural and explosives triggered avalanches near Pemberton on Monday.
There were several reports of size 1-1.5 natural and human triggered avalanches in the region on Sunday.
The region has seen 30-60 cm of new snow over the past few days, with another 5 cm expected during the day on Tuesday.
This 30-60 cm of fresh snow sits on a recently buried persistent weak layer that consists of facets at upper elevations, surface hoar in some sheltered areas, a melt-freeze crust below 1600 m, and a sun crust on south-facing slopes.
In the south, the underlying snowpack is well consolidated. In the north, a melt-freeze crust from early December may be found 100 to 200 cm deep. Recent reports suggest that this layer is gaining strength and it has been unreactive in recent weeks.
