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Archived

Avalanche Forecast

Nov 28th, 2021–Nov 29th, 2021
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
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: South Coast.

It's all about that surface snow. If our persistently high freezing levels prevent a crust from forming, potential for wet loose avalanches in steep terrain will persist too.

Confidence

Moderate - Uncertainty is due to how quickly the snowpack will recover and gain strength.

Weather Forecast

Sunday night: Cloudy with isolated showers. Moderate to strong southwest winds.

Monday: Cloudy. Light southwest winds. Treeline temperatures around +3 with freezing levels to 1750 metres.

Tuesday: Wet flurries transitioning to heavy rain in the afternoon; 20-30 mm accumulation. Moderate to strong southwest winds, increasing over the day and overnight. Treeline temperatures rising from around 0 to +4 over the day as freezing levels climb from 1400 to 2500 metres..

Wednesday: Rain; 20-30 mm accumulation. Strong south or southwest winds. Treeline high temperatures around +4.

Avalanche Summary

No avalanches have been reported in the region and overall reports in the region remain limited. Be sure to post your observations to the Mountain Information Network!

Snowpack Summary

Heavy rain has affected the snowpack at all elevations. With a bit of cooling over Sunday night we should see surface crust beginning to form and eliminate chances of wet loose avalanche activity. In areas where crust may fail to form (especially lower elevations), this potential could linger.

Average treeline snow depths are around 80-100 cm with much of treeline and all below treeline elevations still below threshold depths for avalanches.

Early season hazards such as rocks, stumps, and creeks are a concern below the alpine.

Terrain and Travel

  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.
  • Avoid terrain traps where the consequence of any avalanche could be serious.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

Avalanche Problems

Loose Wet

Some potential for human triggered wet loose avalanches may still exist on steep slopes where a firm crust fails to form over the rain-soaked snowpack.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5