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Avalanche Forecast

Archived

Jan 30th, 2024–Jan 31st, 2024

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.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
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

The upper snowpack has been heavily saturated and weakened by recent rains.

The mid and lower snowpacks contain several old crusts but remain generally well-bonded and strong.

Snow depths have decreased significantly with recent rain and warm temperatures, particularly at lower elevations where the snowpack has been melting at an alarming rate.

Weather Summary

Tuesday Night

Partly cloudy with no precipitation, southeast alpine wind 20 to 40 km/h, freezing level around 2800 m.

Wednesday

Cloudy with 2 to 10 mm of rain or wet snow at higher elevations, south alpine winds 20 to 40 km/h, freezing level around 2000 m.

Thursday

Cloudy with up to 5 mm of rain or wet snow at higher elevations, south alpine winds 20 to 40 km/h, freezing level around 1700 m.

Friday

Mix of sun and cloud with no precipitation, southwest alpine winds 10 to 30 km/h, freezing level around 1400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

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

Problems

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.

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.