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Avalanche Forecast

Archived

Nov 27th, 2021–Nov 28th, 2021

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast.

Heavy rain and high freezing levels keep avalanche danger elevated for another day.

Confidence

Moderate - We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.

Weather Forecast

Saturday night: Rain, heavy at times; 50-70 mm. Strong to extreme southwest winds. Treeline low temperatures +5 C with freezing levels peaking at 3000 metres. 

Sunday: Rain; 15-25 mm. Moderate to strong southwest winds. Treeline high temperatures +4 C with freezing levels going down at 2000 metres.

Monday: Mainly cloudy with isolated showers. Moderate southwest winds. Treeline high temperatures +3 C with freezing levels at 1800 metres.

Tuesday: Rain, heavy at times; 20-30 mm. Moderate to strong southwest winds. Treeline high temperatures + 3C wih freezing levels at 2200 metres.

Avalanche Summary

No avalanches have been reported in the region. With treeline and below treeline elevations still below threshold depths, avalanche potential is expected to be limited to the highest alpine areas in the region. 

Reports in the region remain limited. Be sure to post your observations to the Mountain Information Network !

Snowpack Summary

A series of incoming storm systems will bring plenty of precipitation. However, due to high freezing levels, most of the precipitation will likely fall as rain. Saturday's storm will peak overnight and bring rain up to 100-140 mm at high alpine elevations. As a result, expect to see moist or wet snow surface conditions right to mountain tops.

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.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.
  • Avoid terrain traps where the consequence of any avalanche could be serious.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.