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Avalanche Forecast

Archived

Dec 29th, 2022–Dec 30th, 2022

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Assess for stiff, cohesive slabs on the surface. The recent storm snow may still need time to bond to the underlying layers.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported.

Please continue to post your observations and photos to the Mountain Information Network.

Snowpack Summary

Variable southerly winds have redistributed 30 to 50 cm of recent snow at higher elevations. Just below the new snow, a layer of moist snow exists at lower elevations, while it has frozen into a thick melt-freeze crust in higher elevations. The mid and lower snowpack is generally well settled and bonding.

Snowpack depths reach 140-180 cm at treeline and higher.

Weather Summary

Thursday night

Cloudy with flurries, 0 to 2 cm. Light to moderate southwest winds. -5 C at treeline.

Friday

Cloudy and light snow, 5 to 10 cm. Moderate to strong winds. 0 to -5 C at treeline. Freezing levels 1000m.

Saturday

Cloudy and light snow, 2 to 5 cm. Moderate southwest winds. -5 C at treeline.

Sunday

Cloudy with sunny periods, trace snow amounts. Light southwest winds. -5 to -10 C at treeline.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Investigate the bond of the recent snow before committing to your line.
  • Be alert to conditions that change with aspect and elevation.

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.