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Archived

Avalanche Forecast

Dec 6th, 2024–Dec 7th, 2024
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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: East Kakwa, Kakwa, McBride, McGregor, North Rockies, Pine Pass, Premier, Renshaw, Robson, Sugarbowl, Tumbler.

Choose small, low consequence slopes.

New storm and wind slabs will likely be reactive to rider traffic.

Confidence

Low

Avalanche Summary

No significant avalanches were reported.

Observations remain limited this early in the season. If you head into the backcountry, please post to the Mountain Information Network.

Snowpack Summary

By the morning of December 7th 15 to 30 cm of storm snow may have fallen. This new snow will be accompanied by strong southwest wind forming deeper deposits on north and east aspects. Moist snow from recent rain and warm temperatures can be found below. At lower elevations this precipitation will likely be rain, further saturating the upper pack.

The lower snowpack contains a crust from early-November, possibly with weak facets around it. Its distribution and reactivity are unclear, and it is uncertain if avalanches are failing on this layer.

Treeline snow depths range from 60 to 200 cm.

Weather Summary

Friday Night

Cloudy with up to 15 cm of snow expected, except for the eastern slopes where trace amounts are expected.  Rain below treeline. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Saturday

Cloudy with 5 to 20 cm of snow in most areas, with 1 to 3 cm of snow on the eastern slopes. Rain is expected below treeline. 40 to 60 km/h southwest ridgetop wind. Treeline temperature around -1 °C.

Sunday

Mix of sun and cloud with 1 to 3 cm of snow possible. 20 to 40 km/h west ridgetop wind. Treeline temperature -4°C.

Monday

Cloud clearing throughout the day with no snow expected. 15 to 30 km/h west ridgetop wind. Treeline temperature -6°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.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Avalanche Problems

Storm Slabs

Snow and strong southwest wind will likely form storm and wind slabs, the largest and most reactive will be on north and east aspects in the alpine.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2.5