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Avalanche Forecast

Archived

Mar 25th, 2020–Mar 26th, 2020

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Wind slabs will form on Thursday in the alpine with increasing wind from the West.

Weather Forecast

Seasonal temperatures, mixes of sun and cloud for the next couple of days. The main input will be the wind increasing to strong from the west Thursday late morning.

Snowpack Summary

Up to 30cm cm of light, dry new snow with minimal to no wind effect over the past 48-hours sits over a generally well settled and deep snowpack. In areas with less snow (< 150 cm), a dense mid-pack overlies a facetted base while deep snowpack areas (> 150 cm) have a strong, solid base.

Avalanche Summary

Small loose dry avalanches smaller than size 1 were observed in the Simpson slide paths today.

Confidence

Due to the number and quality of field observations on Wednesday

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.