AM UPDATE: Travel in avalanche terrain is not recommended. Avalanches are very likely with new snow and wind.
30 to 50 cm of new snow will cause large avalanches on wind-loaded slopes, touchy slabs on steep slopes, and fast-moving loose avalanches.
Saturday, several natural storm slab avalanches up to size 2 were reported. The new snow is poorly bonded to the old snow surface, and many size 1 human-triggered loose dry avalanches in steep areas were also reported.
Storm slabs will continue to form on Sunday. Human-triggered avalanches will be likely on steep slopes, and natural avalanches could be expected anywhere with more than 30 cm of new snow.
Ongoing snow and wind will build reactive storm slabs over the weekend, with storm totals reaching 30 to 50 cm by Sunday afternoon. The new snow will bond poorly to the old snow surfaces, which includes melt-freeze crusts on sun-exposed slopes, large surface hoar or facets on shaded slopes, and wind-affected snow in exposed terrain at ridgelines.
The lower snowpack is strong and bonded.
Saturday Night
Cloudy with up to 10 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -10 °C.
Sunday
Cloudy with up to 15 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -12 °C.
Monday
Mostly cloudy with a trace of new snow. 30 km/h northeast ridgetop wind. Treeline temperature -20 °C.
Tuesday
Clearing. 15 km/h northeast ridgetop wind. Treeline temperature -15 °C.
More details can be found in the Mountain Weather Forecast.
