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Avalanche Forecast

Archived

Feb 26th, 2023–Feb 27th, 2023

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

Regions

Glacier.

Fresh storm slabs now bury a layer of facets and will likely remain reactive for a few days. Assess the snowpack before stepping into bigger terrain.

Excellent snow quality is found in sheltered areas.

Confidence

High

Avalanche Summary

A natural avalanche cycle occurred early Sunday morning up to size 3 and artillery avalanche control on Sunday produced results up to size 3.

Snowpack Summary

15-25cm of new snow buries old wind slab in the alpine and a thin layer of facets. Excellent snow quality found in sheltered locations.

The deep persistent weakness near the base of the snowpack consists of rounding facets and a decomposing crust in some locations.

Weather Summary

Monday will have a mix of sun and cloud with a chance of isolated flurries. Alpine temps will range from -12 to -18 with ridgetop winds 15-25km/hr from the South West.

Small amounts of snow for Tuesday and Thursday.

Terrain and Travel Advice

  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Loose avalanches may start small but they can grow and push you into dangerous terrain.
  • Use appropriate sluff management techniques.

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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.