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Avalanche Forecast

Archived

Jan 30th, 2025–Jan 31st, 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 Rockies, McBride, Sugarbowl, Kakwa, McGregor, Renshaw, Robson.

Expect dangerous avalanche conditions. Avoid avalanche terrain during and after the storm.

Check out the forecaster's blog for details on how shifting your mindset can help you stay safe.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported since Sunday, however the storm has limited observations in this area.

Expect to find reactive storm slabs through the weekend.

Snowpack Summary

The new snow overlies a surface hoar layer particularly around treeline elevations and below. In sun-exposed terrain, surface hoar may rest atop a thin crust, while elsewhere it sits atop a mix of old wind-affected surfaces and weak, faceted snow.

A widespread crust with facets and/or surface hoar, buried in mid-January, is approximately 30 to 70 cm below the surface.

The mid and lower snowpack is well settled with no concerns currently.

Weather Summary

Thursday night

Cloudy with 5 to 15 cm of snow. 20 to 40 km/h west switching to southeast ridgetop wind. Treeline temperature -10 °C.

Friday

Cloudy with 5 to 15 cm of snow. 10 to 30 km/h east ridgetop wind. Treeline temperature - 8 °C.

Saturday

Cloudy with 0 to 3 cm of snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -18 °C.

Sunday

Scattered cloud. 20 to 40 km/h northeast wind. Treeline temperature -25 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Investigate the bond of the recent snow before committing to your line.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.

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.