Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Apr 9th, 2022–Apr 10th, 2022

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

Regions

Glacier.

Conditions at lower elevations will be firm as a result of the cooling temps, but winter snow can still be found on high north aspects.

Enter your line cautiously, there is a fresh windslab problem to manage.

Weather Forecast

Cooling temps and convective flurries are the current pattern.

Tonight: Clear periods, Alpine low -12*C, Light NW ridgetop wind

Sunday: Sun to start, convective flurries in the PM, High -8*C, Freezing level (FZL) 1100m, Light NE wind

Mon: Mainly sunny, Low -14*C, High -9*C, FZL 900m, Light E wind

Tue: Sunny periods, Low -17*C, High -11*C, Light E wind

Snowpack Summary

Below treeline the spring snowpack has undergone several melt-freeze cycles.

Up high, mod-strong SW wind is redistributing up to 15cm of new snow, which overlies a crust on all but N'rly alpine slopes where it's on settled dry snow.

Persistent crust layers from late March, and the deeply buried Dec 1st crust, may awaken with large triggers/cornices.

Avalanche Summary

Neighboring operations have seen sporadic very large avalanches failing on persistent/deep persistent crust layers recently.

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, and another size 3 from the S side of Cheops on Wednesday.

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.