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Archived

Avalanche Forecast

Feb 9th, 2024–Feb 10th, 2024
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Bonnington, Crawford, Flathead, Grohman, Kokanee, Kootenay Boundary, Kootenay Pass, Lizard, Lizard-Flathead, Moyie, Norns, Retallack, Rossland, South Okanagan, St. Mary, Ymir.

Snow is available for transport, and with increasing westerly winds, human-triggered wind slabs are possible. Actively look for instabilities like shooting cracks and whumpfing.

Confidence

Moderate

Avalanche Summary

Numerous explosive-controlled soft slabs up to size 2 were reported in the Fernie area.

On Thursday several skier-triggered storm slab and dry loose up to size 1.5 were reported in the Nelson area.

Snowpack Summary

New low-density snow is being redistributed by westerly winds, developing wind slabs over various surfaces of surface hoar, soft snow, wind-affected snow, and a thin crust formed on steep, solar-facing slopes. A crust now buried 30 to 40 cm deep seems to be well-bonded at lower elevations, in the alpine this may still need some time to bond.

Crusts and facets in the mid and lower snowpack can still be found in isolated pockets and we will continue to monitor them for signs of reactivity.

Weather Summary

Friday Night

Mainly clear with periods of cloud. Alpine wind variable, generally westerly, 20 to 25 km/h. Treeline temperature -12 °C.

Saturday

Clear with cloudy periods. Alpine wind west 25 to 35 km/h. Treeline temperature -6 °C.

Sunday

Mainly cloudy with scattered flurries 4 to 8 cm accumulated. Alpine wind southwest 30 to 40 km/h. Treeline temperature -6 °C.

Monday

Mainly cloudy with scattered flurries 5 to 10 cm accumulated. Alpine wind southwest 20 to 30 km/h. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Pay attention to the wind, once it starts to blow fresh sensitive wind slabs are likely to form.

Avalanche Problems

Wind Slabs

Low-density snow coupled with moderate westerly winds will redistribute snow into lee terrain features at alpine and treeline elevations

Aspects: North, North East, East, South East, South, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2