Up to 25 cm of new snow & strong winds will build reactive slabs.
The danger will rise as new snow accumulates.
Up to 25 cm of new snow and strong southerly winds will build reactive storm slabs. These slabs will be most prone to triggerig on lee northerly slopes. At lower elevations a wet loose problem may also develop in the afternoon.
No new avalanches have been reported since last Thursday, when a widespread cycle of very large avalanches occurred up to size 4. However, with precipitation and strong wind expected from Tuesday’s storm, the likelihood of renewed avalanche activity will significantly increase.
If you are heading into the backcountry, consider sharing your observations and posting a MIN.
15 to 25 cm of new snow is expected to accumulate by the end of Tuesday, accompanied by strong southwesterly winds. These conditions are set to build fresh and reactive new storm slabs.
The new snow will largely be falling on a widespread thick and hard crust that exists everywhere except the highest alpine terrain. The new storm snow may not bond well to this crust.
Older crust layers, now buried 100 to 200 cm deep, are no longer a concern, and the lower snowpack is generally strong and bonded.
Monday Night
Mostly cloudy. 0 to 3 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level falling to 1200 m.
Tuesday
Cloudy. 15 to 25 cm of snow, possible rain below 1500 m in the afternoon. 50 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 1700 m.
Wednesday
Mostly cloudy. 20 to 40 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.
Thursday
Mix of sun and clouds. 4 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level 1100 m.
More details can be found in the Mountain Weather Forecast.
