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Avalanche Forecast

Archived

Apr 17th, 2022–Apr 18th, 2022

Alpine
Natural avalanches unlikely.
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

Jasper.

Not much change in the weather means that Cornices remain the primary concern. Select your route to avoid exposure and be mindful of your overhead hazard.

Weather Forecast

Parkers Ridge Area:

Monday- Mainly cloudy with isolated flurries and trace precipitation. South wind 10-25km/h Freezing level 1800m.

Tuesday- Flurries with 5-10cm of snow. Light Wind gusting to 45km/h. Freezing level 1900m.

Wednesday- Mix of sun and cloud with isolated flurries. Check Avalanche Canada MWF for a regional trend.

Snowpack Summary

Wind effected surface snow on all aspects from recent variable winds with scouring on windward ridge features. Isolated wind slabs and cross loaded pockets exist in the alpine but have bonded well to previous surface. A variety of Melt freeze and solar crusts are present in the upper snowpack at all elevations and aspects except N-NE high alpine.

Avalanche Summary

No new avalanche activity on Mailgne Lake Road today. Saturday's patrol observed a few loose dry steep solar aspects alpine up to size 1. Two natural cornice failures were noted on the Churchill range from Thursday and Tuesday and did not trigger slabs below. Please consider submitting a MIN report if you observe any new activity. Thanks!

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.