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Avalanche Forecast

Archived

Jan 30th, 2025–Jan 31st, 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 possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

South Okanagan, Shuswap, North Okanagan.

The incoming storm is driving the avalanche danger. Reactive storm slabs will build throughout the day.

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Confidence

Moderate

Avalanche Summary

No new avalanches were reported on Wednesday.

Natural and human-triggered avalanches are likely on Friday.

Snowpack Summary

15 to 25 cm of snow is forecast by Friday afternoon. The new snow will likely have a poor bond to the old snow surfaces. These consist of a thick melt-freeze crust on sun-exposed slopes, large surface hoar and/or facets on shaded slopes, and wind-affected surfaces in exposed terrain at ridgelines.

The mid and lower snowpack are generally strong and well-settled. Treeline snowpack depths average 100-150 cm.

Weather Summary

Thursday Night

Cloudy with snow 10 to 15 cm. 20 to 60 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Friday

Cloudy with snow 5 to 10 cm. 15 gusting to 45 km/h south ridgetop wind. Treeline temperature -6 °C.

Saturday

New snow 5 cm. 15 gusting to 30 km/h south ridgetop wind. Treeline temperature -7 °C.

Sunday

Cloudy with flurries. 10 to 20 km/h south ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Avoid freshly wind-loaded terrain features.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.