10-20 cm of forecast snow and strong west winds on Friday night will form fresh wind slabs on lee features in open terrain.
Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
10-20 cm of forecast snow and strong west winds on Friday night will form fresh wind slabs on lee features in open terrain.
Cornices are very large in many areas. Cornice failures may trigger large avalanches on the slopes below.
A size 3 cornice failure that did not trigger a slab on the slope below was reported on Thursday.
Riders may get surprised by widely propagating storm slabs that are sitting on crusts and/or surface hoar.
FRIDAY NIGHT: Snow; 10-20 cm / Strong west winds / Low of -8 / Freezing level valley bottom.
SATURDAY: Mix of sun and cloud / Light west wind / High of -2 / Freezing level 1300 m.
SUNDAY: Mix of sun and cloud / Light west wind / High of -3 / Freezing level valley bottom.
MONDAY: Cloudy with flurries; 5-10 cm / Strong southwest wind / High of 1 / Freezing level 1500 m.
10-20 cm of forecast snow and strong west winds on Friday night will form fresh wind slabs on lee features in open terrain.
The new snow will be sitting on a variety of surfaces including hard wind affected snow, sun crusts on southerly slopes, and surface hoar on shady or sheltered slopes. Expect wind slabs to be most reactive where they are sitting on either a sun crust or surface hoar.
The mid and lower snowpack is generally well-settled and strong in most areas, with multiple crusts throughout. No recent persistent slab avalanches have been reported on these layers.
