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Avalanche Forecast

Archived

Dec 23rd, 2022–Dec 24th, 2022

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

Regions

South Coast, North Shore, Sasquatch, Sasquatch, Sky Pilot.

Upwards of 70 mm of rain is forecast for the North Shore Mountains over the next 24 hours. In general, both snow quality and snowpack stability will be poor.

Confidence

Moderate

Avalanche Summary

No notable recent avalanches have been reported. Please continue to post your observations and photos to the Mountain Information Network.

Snowpack Summary

Wet flurries and rain will quickly stress and saturate the snowpack.

A fresh 10 cm new snow accumulated Friday morning. The new snow buried a layer of weak, sugary, unconsolidated snow produced by the recent cold weather.

The snowpack is generally well settled and bonding. Snowpack depths range from 100-180 cm at treeline.

Weather Summary

Friday night

Wet flurries turning to rain as temperatures rise, upwards of 100 mm rain is forecast in the next 24 hrs. Southwest winds gusting to 50 km/hr. Freezing level climbing above 1200 m.

Saturday

Heavy rain, 40-80 mm. Ridgetop high temperature above 0 C. Strong south-southwest wind, gusting to 70 km/hr. Freezing level rising above 1800 m.

Sunday

Rain, 10-30 mm. Ridgetop high temperature +4 C. Southwest wind 30-60 km/hr. Freezing level spiking above 2300 m.

Monday

Rain, 50 mm. Ridgetop high temperature +6 C. Southwest wind 40 gusting to 90 km/hr. Freezing level 2300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The first few hours of rain will likely be the most dangerous period.
  • Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.

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.