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Avalanche Forecast

Archived

Feb 23rd, 2025–Feb 24th, 2025

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

Regions

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

Another day to investigate new snow amounts and reactivity before committing to avalanche terrain. Expect the greatest hazard on lee slopes at high elevations.

Confidence

Moderate

Avalanche Summary

Observations since Saturday's storm are limited, however ski cutting in the North Shore did yield small wet loose avalanches. No slab activity has been reported.

10 - 20 cm of heavy new snow and high winds Sunday night should make for a reactive wind slab problem needing to be managed on Monday.

Snowpack Summary

By Monday morning, 10 - 20 cm of new snow (increasing with elevation) should accumulate on 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 80 to 120 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

Sunday Night

Cloudy with wet flurries bringing 10 - 20 cm of new snow, increasing with elevation, rain below about 1200 m. 30 - 60 km/h southwest ridgetop wind. Freezing level 1500 m.

Monday

Clearing over the day, clouding over in late afternoon. 20 to 50 km/h southeast ridgetop wind, increasing. Freezing level rising from 1200 m to 1600 m.

Tuesday

Partly cloudy with 10 - 20 cm of heavy new snow from overnight, increasing with elevation. 10 - 20 km/h variable ridgetop wind. Freezing level 1200 - 1400 m.

Wednesday

Becoming sunny. 20 - 40 km/h southeast ridgetop wind. Freezing level shooting to 2500+ m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

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.