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Avalanche Forecast

Archived

Feb 27th, 2026–Feb 28th, 2026

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

Regions

Glacier.

Travel in avalanche terrain is not recommended. Human-triggered avalanches are very likely as new snow continues to add stress to buried persistent weak layers.

Please read the Mountain Conditions Report for a detailed avalanche summary.

Confidence

High

  • We are confident the likelihood of avalanches will increase with the forecast weather.

Avalanche Summary

A Natural cycle happened Friday. Numerous avalanches as big as size 4 running into valley bottom and covering the skin track. See the following link to an Mountain Conditions Report. Also, look at this MIN.

Natural avalanche activity up to size 3 on Thursday with explosives producing results up to size 3.5 in the highway corridor. Many of these avalanches stepped down to the persisant slab.

Snowpack Summary

Storm slabs continues to build with forecasted winds and snowfall.

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, composed of surface hoar/facets/crust, is buried down 130-150 cm. The largest surface hoar is preserved in sheltered areas below treeline.

Weather Summary

An intense storm tapers off Saturday.

Tonight 5cm. Low -14°C. West Wind 25-70 km/h. Freezing level (FZL) 1300m.

Sat - Mix of Sun/Cloud. High -10°C. Winds W 15-30 km/h. FZL 700m.

Sun - Sunny w/ cloudy periods. High -4°C. SW wind 15-40km/hr. FZL 1600m.

Mon - Cloudy w/ sunny periods. High -4°C. Winds West 25-70km/hr. FZL 1300m.

Terrain and Travel Advice

  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Be aware of the potential for large avalanches due to buried surface hoar.
  • 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.