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Avalanche Forecast

Archived

Feb 2nd, 2025–Feb 3rd, 2025

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

Regions

South Coast, Brandywine, Garibaldi, Powell River, Tantalus, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron, Harrison-Fraser.

Storm slabs sit over a weak layer and are easily triggerable by riders.

Confidence

High

Avalanche Summary

Over the weekend, numerous storm slab avalanches were reported size 1-2 on all aspects and elevations. They were triggered naturally, by skiers, vehicles and explosives. Some were triggered remotely or sympathetically. Slabs were up to 60 cm deep and ran on a crust or facet layer beneath the storm snow.

Snowpack Summary

50 to 80 cm of snow fell over the weekend. Near ridgetops, recent moderate to strong southwest wind has loaded recent snow into leeward terrain features. Near the coast, the storm snow may contain a thin crust from a brief temperature spike on Friday.

This recent snow is bonding poorly to an underlying weak layer formed during the January drought. Depending on aspect and elevation, the layer may exist as a hard crust, faceted grains and/or surface hoar.

The mid and lower snowpack is well-settled and bonded with no other layers of concern.

Weather Summary

Sunday

Cloudy with 5 to 10 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -10 °C.

Monday

Cloudy with sunny breaks. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -12 °C.

Tuesday

Cloudy with sunny breaks. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -12 °C.

Wednesday

Sunny. 10 to 20 km/h southeast ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Conservative terrain selection is critical; choose gentle, low consequence lines.
  • Avoid lee and cross-loaded slopes at alpine and treeline elevations.

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.