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Avalanche Forecast

Archived

Mar 14th, 2025–Mar 15th, 2025

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

Regions

South Okanagan, Shuswap, North Okanagan.

Recent storm snow may need extra time to settle. Use caution, especially where more than 20 cm has accumulated.

Confidence

Moderate

Avalanche Summary

On Thursday near both Kelowna and Vernon, explosive avalanche control triggered numerous small to large (size 1-2) storm slab avalanches. On Wednesday explosive avalanche control near Kamloops triggered numerous small to large (size 1-2) storm slab avalanches. These were primarily on southeast aspects and up to 40 cm deep. Moving forward, treat the new snow with caution, especially in areas with more than 15 cm of accumulation.

Snowpack Summary

Between 15 to 40 cm of snow accumulated Thursday, combined with sustained southwest wind. Up to 80 cm of snow has accumulated over the last 7 days. All this snow sits on a hard melt-freeze crust.

A couple weak layers of surface hoar and/or faceted grains associated with a crust from late January and mid February may be found 80 to 100 cm deep.

The mid and lower snowpack is well settled and strong.

Weather Summary

Friday Night

Clear with increasing cloud. 10 to 20 km/h south ridgetop wind. Treeline temperature -9 °C.

Saturday

Cloudy with 1 to 5 cm of snow. 20 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

Sunday

Cloudy with 1 to 3 cm of snow. 20 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

Monday

Cloudy with 1 to 3 cm of snow. 20 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Investigate the bond of the recent snow before committing to your line.
  • Even brief periods of direct sun could produce natural avalanches.

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.