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Avalanche Forecast

Archived

Dec 17th, 2024–Dec 18th, 2024

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

Regions

South Coast Inland, Duffey, South Chilcotin, Stein, Taseko.

Choose small, low consequence slopes.

Slabs formed overnight will likely remain reactive to rider traffic.

Solar input could increase sensitivity to triggering.

Confidence

Low

Avalanche Summary

There are no recent avalanche reports for this region.

If you are going out in the backcountry, please consider sharing your observations to the Mountain Information Network (MIN).

Snowpack Summary

By the morning of the 18th up to 30 cm of new snow may have fallen. This will be accompanied by strong southerly winds forming deeper deposits on north aspects.

15 to 40 cm overlies a crust on south aspects and all aspects below 1800 m. A layer of surface hoar could be found just above this layer in sheltered terrain at treeline.

Snow depths at treeline are around 80-90 cm.

Weather Summary

Tuesday Night

Cloudy with 10 to 30 cm of snow expected. 60 to 80 km/h south ridgetop wind. Treeline temperature -3 °C.

Wednesday

Mix of sun and cloud with up to 5 cm of snow expected early in the morning. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Thursday

A mix of sun and cloud with trace amounts of snow expected. 40 to 60 km/h south ridgetop wind. Freezing level rising to 2100 m, with the potential for a temperature inversion and colder temperatures at valley bottom.

Friday

Mostly sunny. 30 to 50 km/h southeast ridgetop wind. Freezing level rising to 2300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be careful as you transition into wind-affected terrain.
  • Be alert to conditions that change with elevation and sun exposure.

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.