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Avalanche Forecast

Archived

Jan 7th, 2024–Jan 8th, 2024

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

Pay attention to accumulating snowfall - avalanche hazard will increase as the next storm brings more snow and wind.

Confidence

Moderate

Avalanche Summary

This MIN reports a remotely triggered avalanche on Saturday around the Coq Summit. With more snow and wind forecast, expect to find a more reactive storm slab as snow accumulates.

If you head into the backcountry by any method of travel, please consider submitting observations and/or photos on the Mountain Information Network.

Snowpack Summary

Another system of heavy snowfall and wind is forecast to begin Monday.

20-50 cm storm snow and older more, settled snow covers a crust and well-settled snowpack in the alpine and upper treeline. Strong SW wind may have redistributed loose snow to lee features.

Snowpack depths range from 80-160 cm and decrease rapidly at lower elevations.

Weather Summary

Sunday Night

Cloudy with isolated flurries. Light increasing ridgetop wind. Treeline temperature -12 °C.

Monday

Cloudy with flurries, 10 cm. Southwest ridgetop increasing to strong. Treeline temperature -6 °C.

Tuesday

Heavy snow, 30-50 cm. Strong southwest ridgetop wind. Treeline temperature -6 °C.

Wednesday

Snowfall decreasing, 15-30 cm. Decreasing northwest ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for avalanche hazard to increase throughout the day.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Dial back your terrain choices if you are seeing more than 25cm of new snow.
  • Investigate the bond of the recent snow before committing to your line.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.