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Avalanche Forecast

Archived

Apr 10th, 2022–Apr 11th, 2022

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

Regions

Glacier.

Great skiing can be found in sheltered areas in the alpine!

Be sure to evaluate your line for wind slab reactivity. 

Weather Forecast

Cooling temps and an unstable airmass persist for another few days.

Tonight: Mainly clear. Alpine low -14*C, freezing level (fzl) at valley bottom. Light east wind.

Mon: Mainly sunny, High -9*C, fzl 900m, moderate E wind

Tue: Cloudy with sunny periods. Low -17*C, High -11*C, fzl 600m. Light E wind

Snowpack Summary

Up high, mod-strong SW wind redistributed up to 15cm of new snow, which overlies a crust on all but N'ly alpine slopes where it's on settled dry snow.  Below treeline the spring snowpack has undergone several melt-freeze cycles. The March 30th melt-freeze crust is buried 30-70cm deep.

Avalanche Summary

A skier triggered a small wind slab in a lee feature on the north side of Mt Cheops Saturday. Glide cracks have been on the move lately, with a size 2 glide slab avalanche from the S aspect of Mt. Tupper early on Saturday, a size 3 from S Mt. Tupper on Friday.

Confidence

Due to the number of field observations

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.