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Avalanche Forecast

Archived

Jan 14th, 2022–Jan 15th, 2022

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

Regions

Glacier.

It's a mixed bag out there with wind affect up high and crusty tree-bombed cream cheese down low.

Tread lightly, especially in areas that have not recently avalanched.

Weather Forecast

Break in the weather tonight. Precipitation returns this weekend with temperatures remaining warm.

Tonight: Isolated flurries, 5cm. Freezing level 1300m. Wind SW 35 to 50 km/h

Sat: Scattered flurries, 4cm. Fzl 1300m. Wind W 25 gusting to 50 km/h

Sun: Snow, 17cm. Fzl 1300m. Wind SW 25-35 km/h

Snowpack Summary

Storm slabs have formed with ~40cm of storm snow, warm temps and mod/strong SW winds. These have buried a Jan11 surface hoar layer observed up to 4-6mm, found at treeline and below. The Dec 1 crust is now buried up to 2m deep and remains dormant.

Avalanche Summary

Today, a size 3.0 avalanche released naturally from a steep solar path at treeline (Cougar Corner 6).  The sun also triggered numerous small (up to size 1.5) loose dry avalanches from steep, rocky terrain features.

A widespread natural cycle of avalanches up to size 4 occurred overnight Wednesday into Thursday morning.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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.