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Avalanche Forecast

Archived

Feb 28th, 2020–Feb 29th, 2020

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 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.

Regions

Little Yoho.

Expect new windslab development overnight and Saturday. Otherwise - great skiing can be found in many locations!

Weather Forecast

Friday Night: Flurries (10-20 cm) with moderate to strong SSW winds. The higher amounts are for the Northern part of the region along the Divide.

Saturday/Sunday: Cooler temperatures with highs of -8C. Saturday night temperatures fall to -14, but climb to -11 C with lighter wind and a mix of sun and cloud forecasted for Sunday.

Snowpack Summary

Some wind effect and new wind slabs in lee areas of the alpine. 10-20 cm of recent snow over buried sun crusts on steep solar aspects. The Feb. 1 rain crust is down 20-50 cm and present below 1900 m. A dense snowpack with no significant weaknesses is present in most areas, but thin rocky areas have a faceted base.

Avalanche Summary

Isolated small thin wind slab in the immediate lees were reported today, otherwise no new avalanches were reported today.

Confidence

Intensity of incoming weather systems is uncertain

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.