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Archived

Avalanche Forecast

Nov 23rd, 2024–Nov 24th, 2024
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Bonnington, Crawford, Grohman, Kokanee, Kootenay Boundary, Kootenay Pass, Norns, Rossland, Ymir.

The recent snowfall needs time to bond.
Conservative terrain choices are essential.

If you go out, consider a writing a MIN report.

Confidence

Low

Avalanche Summary

Reports are very limited at the moment but the storm slab is sensitive to human triggering and natural avalanches are possible.

Several large (size 2-2.5) storm slab avalanches occurred in the Lizard range near Fernie on Thursday.

Snowpack Summary

Recent snowfall amounts are around 40 to 50 cm in the last three days. The top of the snowpack is generally soft and gets firmer as you go down. A layer of surface hoar that has been reported in open areas at treeline and below is buried 60-70 cm deep.
The bottom of the snowpack has a crust from early November that is just above the ground.
Snowpack depth is 130 - 180 cm at treeline.

Weather Summary

Saturday Night

Mostly cloudy with no new snow. 10 to 20 km/h west ridgetop wind. Treeline temperature -7 °C.

Sunday

Mostly cloudy with up to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Monday

Cloudy with 10 to 20 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Tuesday

Mix of sun and cloud with up to 5 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't let storm day fever lure you into consequential terrain.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Avalanche Problems

Storm Slabs

New snow needs time to settle and bond. If triggered, this problem may run on the crust near the base of the snowpack.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5