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Avalanche Forecast

Archived

Feb 1st, 2025–Feb 2nd, 2025

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

Regions

Sea To Sky, South Coast Inland, Homathko, Spearhead, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Storm slabs sit over a weak layer and are easily triggerable by riders. Stick to simple, low angle terrain and avoid overhead hazard.

Confidence

Moderate

Avalanche Summary

On Friday and Saturday, natural and rider-triggered storm slab avalanches were reported size 1-1.5 on a variety of aspects at upper elevations. On Saturday, explosive control work produced results up to size 2 near Pemberton and size 2.5 near Whistler.

Snowpack Summary

Light snowfall continues. 20 to 40 cm of new snow has accumulated since Thursday night. Near ridgetops, moderate to strong southwest wind has loaded new snow into leeward terrain features. The new snow is not bonding well to underlying layers including a hard crust, facets and/or surface hoar.

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

Weather Summary

Saturday night

Cloudy with 1 to 5 cm of snow. 10 to 20 km/h southwest ridgetop wind switching northwest. Treeline temperature -12 °C.

Sunday

Cloudy with 5 to 10 cm of snow. 10 to 15 km/h northeast ridgetop wind. Treeline temperatures -15 °C.

Monday

A mix of sun and cloud. 10 to 15 km/h northeast ridgetop wind. Treeline temperatures -17 °C.

Tuesday

Mostly sunny. 10 to 15 km/h northeast ridgetop wind. Treeline temperatures -16 °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.
  • Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
  • Closely monitor how the new snow is bonding to the old 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.