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Avalanche Forecast

Archived

Jan 28th, 2025–Jan 29th, 2025

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 possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Glacier.

Many folks have been seeking aggressive lines further afield recently. Get up early, move efficiently, and have a means to raise an alarm if you encounter an emergency.

Parks Canada and neighbouring emergency agencies will be conducting avalanche rescue practice near Rogers Pass tomorrow. Cheer them on if you see them! :)

Confidence

High

Avalanche Summary

Several solar triggered dry/loose avalanches reported on Mon/Tues up to Sz 2, the largest off Cougar Corner from steep, unrideable terrain.

Field teams have observed skier triggered size 1's the past few days, which were isolated to the top 10-15cm of snow on old firm bed surfaces. Despite their small size, they were moving fast in steep terrain.

Snowpack Summary

A surface sun crust has formed on steep solar aspects.

Variable wind slabs that formed on the 23rd are decomposing with the cold, clear nights. Sheltered areas have ~15cm of low density, faceted (sugary) snow atop a denser, wind-pressed layer. The Jan 7th layer is down 30-60cm, comprised of surface hoar (all aspects) and/or a thin crust on steep S aspects. The mid and lower snowpack are well bonded and strong.

Weather Summary

One more full day of sun, then snow arrives late Thurs.

Tonight Cloudy with clear periods. Ridge wind NW15 km/h. Freezing level (FZL) at valley bottom

Wed Mix of sun & cloud. Alpine high -6°C. Ridge wind SW 25. FZL 800m.

Thurs Flurries later in the day. 5-10cm. Alp high -8°C. Ridge wind SW 20km/h. FLZ 700m.

Fri Snow. 15-20cm. Alp high -6°C. Ridge wind S 15km/h gusting to 70km/h. FZL 1000m.

Thursday

Terrain and Travel Advice

  • Wind slabs are isolated, but may remain reactive.

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.