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Avalanche Forecast

Archived

Feb 25th, 2025–Feb 26th, 2025

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

Regions

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

Conditions may evolve quickly at this time of year.

Be wary of loose wet avalanches on steep features, especially if solar radiation is strong.

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

20 to 40 cm of heavy snow accumulated overnight Monday. This adds to a buried crust or rain-soaked surfaces at most elevations. At upper elevations, 30 to 50 cm of dense recent snow can be found.

A late-January weak layer (hard crust, facets, or surface hoar) is buried 100 to 150 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

Tuesday Night

Cloudy with isolated flurries up to 5 cm. 20 to 30 km/h southwest ridgetop wind. Treeline temperature +0°C. Freezing level around 1200 m.

Wednesday

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

Thursday

5 to 10 cm of wet snow at upper elevations only. 50 to 70 km/h southwest ridgetop wind. Treeline temperature +6°C. Freezing level lowering to 1800 m.

Friday

Mix of sun and clouds. 25 to 45 km/h southwest ridgetop wind. Treeline temperature +10°C. Freezing level reaching 2700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

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.

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.