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Avalanche Forecast

Archived

Feb 1st, 2015–Feb 2nd, 2015

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.

A slow trickle of precipitation will effect the Little Yoho region over the next three days (~30cm), improving the ski quality. Watch for the development of windslabs in the alpine.

Weather Forecast

Between now and Wednesday expect up to 30cm of new snow in the Little Yoho region. Light to moderate West winds will create windslabs over this time period in lee areas in the alpine.

Snowpack Summary

Up to 20cm of low density snow in the last 48 hours. The Jan 30 melt/freeze crust can be found up to 2300m (higher on solar aspects). In isolated areas we expect the Dec. 18 surface hoar layer down approximately 50-70cm to remain, but triggering is unlikely.

Avalanche Summary

No new natural avalanche activity was observed or reported today.

Confidence

Forecast snowfall amounts are 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.