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Avalanche Forecast

Archived

Mar 6th, 2026–Mar 7th, 2026

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

Regions

Glacier.

Storm slab hazard will increase throughout the day Sat. Avoid overhead hazard as storm slab avalanches could step down to buried persistent weak layers resulting in huge avalanches.

Slopes that have not yet avalanched will be ripe for human triggering.

See the Avalanche Canada blog post for an update on persistent slab conditions.

Confidence

Moderate

  • We are uncertain about how persistent slabs will react to the forecast weather.

Avalanche Summary

Limited explosive testing on Friday produced one size 3 avalanche on the west end of the park.

3 size one natural avalanches on a East aspect at treeline on Wednesday. Approx. 100cm deep, on the Jan 26th layer.

Explosive tests at Fidelity Tues. produced a size 3 avalanche on the Jan 26 surface hoar, which remote triggered a second size 3 slab 50m away.

See the following link to a recent MCR showing the highlights from last weeks avalanche cycle.

Snowpack Summary

20-50 cm of recent storm snow buries old wind slab on polar aspects and a sun crust on solar aspects.

The Feb 9 surface hoar (SH) is down 90-120 cm and remains reactive in snowpack testing. The Feb 9 SH sits over a crust on solar aspects.

The Jan 26th layer is buried down 130-160 cm, and is composed of very large surface hoar (up to 40mm), facets, and/or a crust, The largest surface hoar is preserved in sheltered areas below treeline.

Weather Summary

Stormy weekend.

Tonight Flurries, 9cm. Alpine Low -4°C. Freezing level (FZL) 1300m. Wind West 30km/h.

Sat Snow, 20-25cm. High -0 °C. FZL 1900m. Wind SW 35 gusting to 70.

Sun Snow, 16cm. Low -12 °C, High -2 °C. FZL 1600m. Wind West 25 gusting 85km/h.

Mon Flurries, 5-10cm. High -11°C. Wind SW 15 gusting to 50km/h. FZL valley bottom.

Terrain and Travel Advice

  • This avalanche problem is difficult to trigger, but would have serious consequences.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Shooting cracks, whumpfs, and recent avalanches are strong indicators of an unstable snowpack.

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.

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.