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Avalanche Forecast

Archived

Jan 29th, 2024–Jan 30th, 2024

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

Regions

Sasquatch, Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

The upper snowpack has become saturated and weakened due to warm temperatures and rainfall.

Confidence

Moderate

Avalanche Summary

A widespread loose wet and wet slab avalanche cycle occurred in the Coquihalla area over the past few days, up to size 2.

Recent observations have been limited.

Snowpack Summary

Rainfall has saturated the upper snowpack at all elevations. Below treeline, the snowpack has significantly decreased and may now be below the threshold in some areas.

The mid and lower snowpack is generally well-bonded and strong, with several old crusts present. The snowpack remains shallow for this time of year.

Weather Summary

Monday Night

Couldy with 0 to 10 mm of rain, southwest alpine winds 60 to 90 km/h, freezing levels around 2400 m.

Tuesday

Cloudy with trace amounts of rain or wet snow, southwest alpine winds 20 to 40 km/h, freezing levels around 2400 m.

Wednesday

Mostly cloudy with 0 to 5 mm of rain or wet snow, south alpine winds 20 to 40 km/h, freezing levels around 2200 m.

Thursday

Mostly cloudy with 0 to 5 mm of rain or wet snow, south alpine winds 20 to 40 km/h, freezing levels around 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • 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 areas with overhead hazard.
  • Keep in mind that wet avalanches can be destructive due to their high density.

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.

Wet Slabs

Wet Slab avalanches are the release of a cohesive layer of snow (a slab) that is generally moist or wet when the flow of liquid water weakens the bond between the slab and the surface below (snow or ground). They often occur during prolonged warming events and/or rain-on-snow events. Wet Slabs can be very unpredictable and destructive.