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Avalanche Forecast

Archived

Dec 9th, 2023–Dec 10th, 2023

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

Regions

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

Keep an eye out for blowing snow. If you observe wind transport wind slabs could become more reactive.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported in the region.

If you do go into the backcountry, consider submitting a Mountain Information Network report.

Snowpack Summary

Ongoing snowfall accompanied by southerly winds could add to the wind slab problem.

A crusts can be found down around 50 cm on terrain below 1200 m, except on wind scoured slopes where it could be on the surface.

The snowpack is now above threshold for avalanches on smooth slopes at treeline. The snowpack in general is shallower than usual for this time of year and early season hazards are still a concern.

Check out this MIN from our field team that summarizes conditions at Fraser Chutes.

Weather Summary

Saturday Night

Cloudy with 2 cm of new snow expected, southwest alpine wind increasing to 30 km/h, treeline temperature -15°C.

Sunday

Mostly cloudy with trace amounts of new snow expected, southwest alpine wind 40 to 60 km/h, treeline temperature -10°C.

Monday

Cloudy with a few centimeters of new snow expected, southwest alpine wind 40 to 60 km/h, treeline temperature -2°C.

Tuesday

Cloudy with up to 10 cm of new snow expected, southwest alpine wind 40 to 60 km/h shifting to south 10 to 25 km/h, treeline temperature -1°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.

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.