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Avalanche Forecast

Archived

Feb 4th, 2025–Feb 5th, 2025

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

Regions

South Okanagan, Shuswap, North Okanagan.

Use caution in sheltered areas at treeline and above. A preserved weak layer may remain reactive to human triggering.

Check out the new Forecaster Blog "Keeping a Conservative Mindset".

Confidence

High

Avalanche Summary

On Sunday, a few small natural and human-triggered loose dry avalanches were reported in steep northeast facing terrain. See this great MIN for details!

We expect unconsolidated snow will remain reactive to skier traffic on Wednesday in steep terrain. Carefully manage sluffing and minimize exposure to overhead hazards wherever possible.

Snowpack Summary

20 to 35 cm of storm snow blankets the area. Expect to find deeper deposits on north and east slopes in wind-loaded areas. Storm snow has not bonded well to the old snow surfaces, which includes melt-freeze crusts on sun-exposed slopes, large surface hoar or facets on shaded slopes, and wind-affected snow in exposed terrain at ridgelines.

A weak layer of surface hoar of facets is buried, 20 to 35 cm deep. This layer is most likely to be preserved in sheltered areas at treeline.

The lower snowpack is strong and bonded. Treeline snow depths average 150 to 200 cm.

Weather Summary

Tuesday Night

Mainly clear. 5 to 15 km/h north ridgetop wind. Treeline temperature -19 °C.

Wednesday

A mix of sun and cloud. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -12 °C.

Thursday

Mainly sunny. 5 to 15 km/h variable ridgetop wind. Treeline temperature -12 °C.

Friday

Mainly sunny. 10 to 15 km/h variable ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.