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Avalanche Forecast

Archived

Feb 24th, 2025–Feb 25th, 2025

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

Regions

South Coast, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron.

Stormy weather continues !

Avoid avalanche terrain during periods of heavy snowfalls.

Natural avalanche activity is expected.

Confidence

Moderate

Avalanche Summary

No new avalanche was reported, but field observations are limited.

Recent heavy new snow and high winds make for reactive slabs at upper elevations while heavy rain likely triggered loose wet avalanches at lower elevations.

Snowpack Summary

10 to 20 cm of heavy new snow accumulated overnight has now buried a crust forming on rain-soaked surfaces at most elevations. It may add to a thin cover of dense new snow in the alpine.

A late-January weak layer (hard crust, facets, or surface hoar) is buried 90 to 130 cm deep, this layer should be entombed beneath a firm crust in most areas, with some uncertainty around the highest elevations of the region.

The lower snowpack is strong and bonded.

Weather Summary

Monday Night

Cloudy with 40 to 50 cm of wet snow or rain below 1000 m. 60 to 80 km/h southeast ridgetop wind. Treeline temperature stable around +2°C. Freezing level lowering from 1400 m to 1000 m.

Tuesday

10 to 20 cm of wet snow or rain easing in the morning. 30 to 40 km/h westerly ridgetop wind. Treeline temperature +4°C. Freezing level reaching 1400 m.

Wednesday

Partly cloudy. 30 to 50 km/h southwest ridgetop wind. Treeline temperature +8 °C.Freezing level reaching to 2500 m.

Thursday

10 to 20 cm of wet snow or rain. 50 to 70 km/h westerly ridgetop wind. Treeline temperature +6°C. Freezing level lowering to 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid areas with overhead hazard.
  • Watch for rapidly changing conditions during periods of heavy loading from new snow, wind, or rain.
  • Keep in mind that the high density of wet avalanches can make them destructive.

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 Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.