Avalanche Forecast

Archived

Feb 28th, 2022–Mar 1st, 2022

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

Banff Yoho Kootenay.

The hazard will gradually increase on Tuesday with new snow, wind and warmer temperatures. How much the hazard rises will depend on snow amounts and intensity of winds.

Weather Forecast

10-20 cm of new snow is forecasted by end of day Tuesday. This snow will be accompanied by mod to strong SW winds. Freezing levels will rise to 2000 m on Tuesday and then drop again for Wednesday.

Snowpack Summary

10-15 cm of new snow overlays previous surfaces which include wind effected and faceted snow and sun-crusts. The Feb 15 sun-crusts/hard slab interface is down 30-50 cm. The Jan 30th surface hoar/sun crust layer is down 40-70 cm and variable in distribution and reactivity, producing moderate sudden planar to no results in snowpack tests.

Avalanche Summary

No new avalanches reported on Monday.

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.