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Avalanche Forecast

Archived

Feb 9th, 2013–Feb 10th, 2013

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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Little change. Watch for wind slabs in open areas at and above treeline. Lower elevations are getting weak and facetted.

Weather Forecast

A strong ridge west of the rockies will keep most of the precipitation east of the divide. Moderately warm temperatures and light to moderate north westerly winds.

Snowpack Summary

Some light new snow over the old windslab and facets.

Avalanche Summary

No new avalanches have been observed or reported.

Confidence

Forecast snowfall amounts are uncertain on Tuesday

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.