Avalanche Forecast

Archived

Mar 11th, 2020–Mar 12th, 2020

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

Little Yoho.

Great skiing can be found through the forecast region. Keep the avalanche problems in mind while traveling in the backcountry.

Weather Forecast

Mix of sun and cloud Thursday with temperatures near 0 degrees at valley bottom. Winds will remain in the light to moderate range at upper elevations. A cooling trend will start this weekend as temperatures are forecasted to drop near -25 on Saturday.

Snowpack Summary

10-15cm of snow Wednesday night has been transported by moderate winds at upper elevations creating wind slabs on immediate lee slopes. On steep solar a thin crust has formed on the surface. The deep snowpack of Little Yoho is generally quite strong with few weaknesses.

Avalanche Summary

Ski hills reported reactive wind slabs on lee slopes at upper elevations. No new natural avalanches observed.

Confidence

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.