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Archived

Avalanche Forecast

Feb 11th, 2024–Feb 12th, 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
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Badshot-Battle, Blue River, Central Selkirk, Clearwater, Esplanade, Goat, Gold, Jordan, North Columbia, North Monashee, North Okanagan, North Selkirk, Shuswap, South Columbia, Valhalla, West Purcell, Whatshan.

New snow and wind have formed fresh storm slabs that may be reactive to human triggers.

Use small low consequence slopes to test the bond of the new snow.

Confidence

Moderate

Avalanche Summary

Numerous natural and rider triggered storm slab avalanches up to size 2.5 were reported on a variety of aspects at treeline and above on Saturday. The depth of the slabs was on average 20-30 cm.

The forecast snow and wind Sunday night is expected to increase avalanche activity on Monday.

Snowpack Summary

15 to 25 cm of new snow overlies a weak layer of small surface hoar in sheltered areas and/or a thin sun crust on solar aspects.

The widespread crust buried in early February is down 35 to 55 cm. The snow has been reported as bonding well to the crust in most areas, but this may change as the snow load increases.

Various weak layers persist in the mid to lower snowpack, however, triggering these layers is unlikely where they are capped by a thick crust.

Weather Summary

Sunday Night

Cloudy with 5 to 15 cm of snow. 30 to 40 km/h west ridgetop wind. Treeline temperature -8 °C.

Monday

Cloudy with 3 to 5cm of snow. 15 to 25 km/h west ridgetop wind. Treeline temperature -6 °C.

Tuesday

Sunny. 10 to 20 km/h north ridgetop wind. Treeline temperature -10 °C.

Wednesday

Sunny. 10 to 20 km/h east ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Use small low consequence slopes to test the bond of the new snow.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

Avalanche Problems

Storm Slabs

15 to 25 cm of new snow overlies a weak layer of small surface hoar in sheltered areas and/or a thin sun crust on solar aspects.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2

Loose Dry

Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5