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Avalanche Forecast

Archived

Dec 13th, 2024–Dec 14th, 2024

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

Regions

Sea To Sky, Brandywine, Garibaldi, Homathko, Spearhead.

Heavy snow and strong winds keep avalanche danger "High." Stick to low-angle, non-avalanche terrain with no overhead hazard when planning your day.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the last 2 days. A natural avalanche cycle is expected during Saturdays storm.

Snowpack Summary

The incoming storm snow amounts are expected to average around 30 cm and in the most western reaches of the region exceed 50 cm. This new snow will accumulate on various surfaces, including surface hoar in wind-sheltered terrain at treeline and below, thin melt-freeze crust on south-facing alpine slopes, and old storm snow at higher elevations. Above 1200 m, a crust is now estimated to be down 35 to 65 cm. The mid and lower snowpack is well-settled with no layers of concern.

Weather Summary

Friday Night

Snow 10 to 25 cm. 25 to 35 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1000 m.

Saturday

Snow 30 to 50 cm. 20 to 60 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1100 m.

Sunday

Snow 5 to 10 cm. 10-20 km/h south east ridgetop winds. Treeline temperature -4 °C. Freezing level 700 m.

Monday

Snow 5 to 10 cm . 10-20 km/h ridgetop winds. Treeline temperature -6 °C. Freezing level 500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

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.