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Avalanche Forecast

Archived

Jan 31st, 2025–Feb 1st, 2025

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

Regions

Coquihalla, Manning.

Fresh snow is accumulating over unstable surfaces, creating dangerous avalanche conditions. Avoid avalanche terrain during periods of rapid loading by new snow and wind.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported. We expect avalanches on Friday were small but easily triggered by riders. Avalanche size and sensitivity will likely increase as snowfall intensifies overnight and into Saturday.

Snowpack Summary

New snow is accumulating. By late Saturday afternoon, storm totals are expected to reach 30 to 50 cm, accompanied by moderate southwesterly winds at ridgetops. The new snow is not expected to bond well to underlying surfaces including a hard crust, facets and/or surface hoar.

The mid and lower snowpack is well-settled and dense with no layers of concern.

Weather Summary

Friday night

Cloudy with 15 to 30 cm of new snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature dropping from -3 to -9 °C. Freezing level dropping from 1100m to valley bottom.

Saturday

Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Sunday

Cloudy with 5 to 10 cm of snow. 10 to 30 km/h south ridgetop wind. Treeline temperatures -10 °C.

Monday

Mostly cloudy with 1 to 5 cm of snow. 10 to 20 km/h southeast ridgetop wind. Treeline temperatures -14 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.
  • Don't let storm day fever lure you into consequential terrain.
  • Storm slab size and sensitivity to triggering will likely increase through the day.

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.