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Archived

Avalanche Forecast

Dec 10th, 2022–Dec 11th, 2022
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Brazeau, Churchill, Cirrus-Wilson, Fryatt, Icefields, Jasper, Maligne, Marmot, Miette Lake, Pyramid.

Be vigilant regarding the persistent weak Surface hoar layer down 30cm. If the snow above become more cohesive into a slab condition, it could wake up unexpectedly.

Confidence

Moderate

Avalanche Summary

No field patrol occurred Saturday. No new avalanches have been observed or reported in the last 2 days.

Snowpack Summary

5-10cm of snow arrived Dec 8th which overlies previous Windslab surfaces formed by Dec 7-8th Moderate Southwest winds in the alpine. A surface hoar layer is down 25-35cm and is located in Treeline sheltered areas. The snowpack ranges from 40-100cm deep and can be unsupportive in locations.

Weather Summary

Weather for Parkers ridge Saturday night will be light snow, -9 °C, and light Southwest winds. Expect on Sunday sun and cloud, no new snow, -6 °C, and light winds. Monday and Tuesday is forecasted to be similar to Sunday.

Terrain and Travel Advice

  • Surface hoar distribution is highly variable. Avoid generalizing your observations.

Avalanche Problems

Wind Slabs

Winds have tapered off into the light range yet this condition persists in Alpine start zones from previous moderate to strong winds.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

Marmot Basin Ski area reports buried surface hoar extending into some alpine features. Investigate this layer before committing to terrain. Whumpfing and shooting cracks have been observed on this layer yet but no natural avalanches have been observed as a result.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2.5