Avalanche Forecast

Moderate

On Sunday, a widespread natural avalanche cycle occurred up to size 3. Numerous, remote (from afar) human triggered storm slabs (up to size 1.5) were seen on north aspects, and explosives control produced several storm slab avalanches up to size 3.5.

Strom slabs will remain reactive on Tuesday, especially where there is a poor bond to the underlying crust.

Another 10 to 15 cm of new snow is expected by Tuesday afternoon, bringing up to 70 cm of storm snow since the weekend. Strong southwest winds continue to redistribute some of the fresh snow onto lee slopes at the ridgeline. The new snow sits above a crust on all aspects except on high north facing terrain, where new snow buries 5 cm of snow overlying a crust from earlier in March. This second crust likely doesn’t exist above 2100 m.

A layer of facets and surface hoar from mid February can be found down around 90 to 110 cm, and snowpack tests are producing sudden planar results on it.

Another layer of facets and surface hoar from late January can be found down 110 to 150 cm.

Monday Night

Cloudy with flurries up to 5 cm. 25 to 50 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level valley bottom.

Tuesday

Cloudy with light flurries, 1 to 5 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -2°C. Freezing level 1300 m.

Wednesday

Cloudy with 10 to 15 cm of snow. 20 gusting to 65 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level around 1300 m.

Thursday

Mix of sun and cloud with light flurries. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -6 °C. Freezing level valley bottom.

More details can be found in the Mountain Weather Forecast.

• Keep your guard up at lower elevations. Storms slabs have been reactive at all elevations.
• Avoid freshly wind-loaded terrain features.
• Storm slabs in motion may step down to deeper layers resulting in large avalanches.
• Continue to make conservative terrain choices while the storm snow settles and stabilizes.