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Avalanche Forecast

Archived

Apr 23rd, 2015–Apr 24th, 2015

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Little Yoho.

Cloudy conditions should limit the amount of afternoon solar related avalanche activity, but watch locally for increasing avalanche danger on solar aspects if the sun pokes out. SH

Weather Forecast

Freezing levels down to 1500m Friday AM rising to 2100m Friday.  5-6cm of snow expected over the day with light S winds.

Snowpack Summary

Supportive crust on solar aspects in morning which are deteriorating by early afternoon. High elevation north aspects still have dry snow. Mid and lower pack is well settled with no significant shears.

Avalanche Summary

No new avalanche activity was reported today.  Cloudy conditions prevented the regular afternoon solar cycle from occurring.

Confidence

Problems

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.