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Avalanche Forecast

Archived

Nov 25th, 2022–Nov 26th, 2022

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

Sky Pilot.

Precipitation and wind will intensify throughout the day. At upper elevations, expect to find increasingly reactive slabs in wind-loaded areas and plan to get home before the storm really hits.

Confidence

Low

Avalanche Summary

No new avalanches have been observed or reported in the region, however, observations are limited at this time of year. If you head into the backcountry consider submitting a MIN report.

Snowpack Summary

On Friday wind and warm temperatures quickly impacted up to 15 cm fresh snow found at upper elevations. A variable snowpack depth of between 20-80 cm exists in the region. Expect early season conditions and rugged travel. Below treeline is below the threshold for avalanches.

Weather Summary

Friday night

Cloudy with isolated flurries, trace accumulation. Light northwest wind gusting to 40 km/hr, treeline temperatures around -3 C, freezing level dropping below 1000 m.

Saturday

Snowfall and wind will intensify throughout the day. Up to 20 cm accumulating at upper elevations by 4 pm Saturday as southwesterly winds increase into extreme. Alpine high +2 C. Freezing level around 1100 m.

Sunday

Snowfall and extreme winds are expected overnight, with up to 30 cm of new snow by morning. West wind decreasing to moderate through the day, treeline temperatures dropping to -5 C, and freezing level dropping below 800 m.

Monday

Cold, with a mix of sun and cloud. Light to moderate southerly wind, treeline temperatures around -10 C, and freezing level below 700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid freshly wind loaded terrain features.
  • Dial back your terrain choices if you are seeing more than 25cm of new snow.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.