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Archived

Avalanche Forecast

Nov 4th, 2018–Nov 5th, 2018
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Glacier.

Heavy snowfall in the alpine is piling up on the young, shallow snowpack. Temper your desire to ski bold lines until it has settled. Early season conditions (rocks, stumps, open creeks) lurk at all elevations.

Weather Forecast

Snowfall should taper off today, with freezing levels lowering to 1500m. The next few days should bring scattered flurries and light accumulation to 5cm, moderate westerly winds, and freezing levels hovering around 1300m.

Snowpack Summary

60-70cm of snow in the last 3 days has more than doubled the snowpack depth at treeline. A melt-freeze crust ~15-20cm off the ground is an early layer of concern, especially in the alpine on open, planar slopes.

Avalanche Summary

Several sz 2.5-3 avalanches from Tupper, Macdonald, and Cougar Creek West have traveled onto the avalanche fans, and in some cases to the valley floor. Snow depths below treeline are still very shallow, but slides from up high could possibly affect travelers on the approach trails.

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

60-70cm of storm snow in the last 3 days has more than doubled the existing snowpack depths. This sits on a crust just above the ground and, if triggered, could result in full-depth avalanches.
The new snow will require several days to settle and stabilize.Use conservative route selection, choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 3