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Avalanche Forecast

Archived

Feb 1st, 2025–Feb 2nd, 2025

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

Regions

North Columbia, South Columbia, Esplanade, Jordan, North Selkirk, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold, Kokanee, Retallack, Valhalla, Whatshan.

Human-triggered avalanches are very likely.

The new Forecaster Blog outlines how to manage conditions.

Confidence

Moderate

Avalanche Summary

Several natural and human-triggered avalanches have been reported since Friday. Expect avalanche activity to continue through the forecast period.

Snowpack Summary

Up to 60 cm of new snow has fallen on a variety of old surfaces. There is surface hoar, more prevalent around treeline and below, a crust on sun-facing slopes, and 20 to 30 cm of low-density faceted snow in sheltered areas.

Dry January conditions have created a weak, faceted upper snowpack with multiple surface hoar and crust layers. The new snow will likely not bond well with these layers.

The mid and lower snowpack remains generally well-settled and strong.

Weather Summary

Saturday night

Cloudy with 5 to 10 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -13 °C.

Sunday

Cloudy with 5 to 10 cm of snow. 10 to 20 km/h southwest ridgetop winds. Treeline temperature - 14 °C.

Monday

Mostly cloudy with 0 to 2 cm of snow. 10 to 20 km/h southeast ridgetop winds. Treeline temperature -15 °C.

Tuesday

Mostly cloudy. 10 km/h east ridgetop winds. Treeline temperature -17 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for human triggerable storm slabs at lower elevations, even on small features.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Give the new snow several days to settle and stabilize before pushing into bigger 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.