A widespread weak layer has been responsible for numerous recent avalanches. This problem is not going to disappear quickly.
Stick to simple terrain and avoid overhead hazard.
30-60 cm of recent fresh snow sits on a widespread weak layer that consists of a crust, with facets and/or surface hoar on top of it. This weak layer may continue to produce avalanches for longer than what is typical after a storm on the South Coast.
THURSDAY NIGHT - Mainly cloudy with a few flurries / light southwest wind / alpine low temperature near -2
FRIDAY - Mainly cloudy with isolated flurries / light to moderate southwest wind / alpine high temperature near -2
SATURDAY - Snow, 10-20 cm, with another 10 cm overnight / strong south wind / alpine high temperature near -1
SUNDAY - Snow, 30-40 cm, with another 20 cm overnight / strong south wind / alpine high temperature near -1
Human triggered avalanches are expected to be likely in many areas.
There have been numerous avalanches reported in the region everyday since Monday. These have been natural, human and explosives triggered storm slab avalanches failing on a prominent weak layer that is down 30-60 cm. A few recent MIN reports of some of these avalanches can be viewed here and here.
North Shore Rescue responded to a serious, but non-fatal avalanche incident on Tuesday evening in the backcountry near Cypress Mountain Resort. One person was involved and was partially buried. The avalanche was a size 2 storm slab on a west aspect at approximately 1100 m. This avalanche also failed on the recently buried weak layer.
30-60 cm of recent fresh snow sits on a crust that also has weak facets and surface hoar on top of it in many areas. This weak layer is widespread and will probably take more time to gain strength than what is considered typical for the South Coast region.
Click here to watch North Shore Rescue's January 22 snowpack discussion, which includes a great explanation of how the recently buried weak layer was formed.
