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Avalanche Forecast

Archived

Jan 16th, 2023–Jan 17th, 2023

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

New wind slabs may form over the day.

Confidence

Moderate

Avalanche Summary

We haven't received reports of avalanche activity over the past few days. We expect that new wind slabs may form, which riders could trigger on Tuesday.

Snowpack Summary

New snow and strong southerly wind are forecast, which may form new wind slabs near ridges. Storm slabs may begin to form in areas sheltered from the wind.

Snow depths at White Pass are around 100 cm in sheltered areas and 200 cm on wind-loaded slopes.

Weather Summary

Monday Night

Cloudy with snowfall, accumulation 2 to 5 cm, 20 to 30 km/h south wind, alpine temperature -7 °C.

Tuesday

Cloudy with snowfall, accumulation 5 to 10 cm, 30 to 40 km/h southeast wind, alpine temperature -7 °C.

Wednesday

Mix of sun and cloud with intermittent snowfall, accumulation 2 to 5 cm, 20 km/h south wind, alpine temperature -8 °C.

Thursday

Cloudy with snowfall, accumulation 5 cm, 60 km/h south wind, alpine temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for signs of slab formation throughout the day.
  • Wind slabs are most reactive during their formation.

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.