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Avalanche Forecast

Archived

Jan 26th, 2024–Jan 27th, 2024

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Stormy conditions will increase the hazard throughout the day. Avoid exposure to avalanche terrain during periods of rapid loading from new snow and/or wind.

Confidence

Low

Avalanche Summary

We haven't received any recent reports of avalanches. If you're heading into the backcountry please consider submitting your observations to the Mountain Information Network.

Snowpack Summary

25-30 cm of new snow is set to fall by the end of the day Saturday. With forecast strong winds this snow is set to form reactive storm slabs, especially on lee north and east slopes.

The field team has found a buried weak layer of surface hoar and facets 35-60 cm below the surface. While triggering this layer is unlikely, there is potential for smaller avalanches to overload this layer triggering a larger step-down avalanche.

The overall midpack is generally settled and strong, with the average snowpack depth at treeline around 150 cm.

Weather Summary

Friday Night

Cloudy with 10-20 cm of new snow, south alpine wind 40 km/h, treeline temperature low -10°C.

Saturday

Cloudy with 5 -15 cm of new snow, southwest alpine wind 70-80 km/h, treeline temperature 0°C and freezing levels rising to 1000 m.

Sunday

Cloudy with up to 30 cm of new snow / heavy rain, south alpine wind 50-60 km/h, treeline temperature 1°C and freezing levels rising to 1300 m.

Monday

Cloudy with 5-10 cm of new snow / moderate rain, south alpine wind 40-60 km/h, treeline temperature 3°C, freezing level up to 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm snow and wind is forming touchy slabs. Use caution in lee areas in the alpine and treeline.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

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.