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

Feb 8th, 2021–Feb 9th, 2021

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

Regions

Glacier.

Bring extra layers today. Be prepared to keep yourself and your group warm if trouble arises.

Isolated soft slab at Alpine and Tree-line elevations are stubborn to move, but can still be triggered by a person.

Weather Forecast

I left the Cdn Rockies to get away from this cold weather...

Today/tonight: A mix of sun and cloud. No precip. Alpine high -22*C. Light NW wind.

Tues: Mix of sun and cloud. Alp high -20*C, light SW winds

Wed: Isolated flurries, Alp high -20*C, light S winds

Thurs: Clear, Alp high -26*C, light E winds

Snowpack Summary

Snow from the Feb 2 storm was redistributed by strong S winds, then switched to NW'ly. Isolated pockets of soft slab can be found at ridge-top lee areas. Cold temps are beginning to lock this layer in. The Jan 26 persistent weak layer is buried 60-80cm and consists of decomposing surface hoar in sheltered areas and a thin crust on solar aspects.

Avalanche Summary

The Lens Gully on Tupper spit out a natural sz 3 avalanche yesterday from extreme terrain. Otherwise, no new avalanches noted in the highway corridor.

A field team in the Fidelity area skied to 2400m and noted minor cracking around skis and some loose sluffing in steep (40*) open trees.

Confidence

The weather pattern is stable

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.