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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 expected by end of day on Tuesday. The snow will be accompanied by mod to strong SW winds. Freezing levels expected to rise to approx 2000 m on Tuesday and then dropping again on Wednesday

Snowpack Summary

10-15 cm of new snow lays over previous surfaces that include wind pressed snow, facetted surfaces, and sun crusts. The Feb 15 sun crust/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 avalanches observed or 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.