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Avalanche Forecast

Archived

Jan 24th, 2020–Jan 25th, 2020

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Glacier.

Natural activity is increasing, watch for overhead hazard and expect to trigger the new storm snow

Weather Forecast

Warm temperatures and snow all day today, up to 20cm. Freezing level near 1700m. An above freezing layer is still possible today with associated rain above valley bottom but below mountain top. Light to moderate precipitation over the interior ranges on Saturday. Freezing levels will stay high between 1000 and 1500m. Flurries continue on Sunday.

Snowpack Summary

15cm new snow in 24hrs has not yet bonded to the wind affected and facetted old surface below. 60cm of settled, progressively stiffer snow below that sits over a dense midpack. The Dec 27th surface hoar/crust is down 100cm, the Dec 11th surface hoar can still be found down 150cm.

Avalanche Summary

Numerous avalanches were observed in the highway corridor yesterday up to size 3.5. Frequent flyer went naturally yesterday size 2 across the Connaught Creek uptrack and several naturals were observed in the North paths off Cheops. Skier accidentals this week on MacDonald West Shoulder # 4 (see photo here), Video Peak and Grizzly Colouir (see MIN).

Confidence

Intensity of incoming weather systems is uncertain on Friday

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.