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Avalanche Forecast

Archived

Dec 9th, 2020–Dec 10th, 2020

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

Regions

South Coast.

The snowpack is drying and freezing. Flurries may dust the highest elevations.

Confidence

High -

Weather Forecast

WEDNESDAY NIGHT: Cloudy / Light, southeast ridgetop wind / alpine low temperature -1 / Freezing level 900 m

THURSDAY: Cloudy, isolated wet flurries / Light, gusty southeast ridgetop wind / alpine high temperature +2 / Freezing level 1200 m

FRIDAY: Cloudy with flurries, trace to 5 cm / Light, northeast ridgetop wind / alpine high temperature -2 / Freezing level 800 m

SATURDAY: Wet flurries, 10 cm / Light, gusty south ridgetop wind / alpine high temperature 2 / Freezing level 1600 m

Avalanche Summary

There have been no recent avalanche reports in the region

Have you been out and about in the mountains? If so please submit to the Mountain Information Network (MIN). It doesn't have to be technical it can be as simple as a photo. Photos are especially helpful! Sending out a big thank you to the already submitted MIN's this season. Thanks everyone!

Snowpack Summary

The atmospheric river dropped over upwards of 100 mm of rain on the North Shore Mountains early this week. Cooling temperatures Wednesday and intermittent precipitation deposited flurries at high elevations. Wet snow covers crusts and a settled snowpack as you decrease in elevation. The snowpack has begun to cool and freeze.

Snowpack depth changes quickly with elevation. Prior to the storm, depths ranged from 100 cm in the trees up to 150-200 cm near mountain tops.

Terrain and Travel

  • Be alert to conditions that change with elevation.
  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

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.