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Avalanche Forecast

Archived

Apr 11th, 2024–Apr 12th, 2024

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.
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, Haines Pass.

Wind slabs may be found at higher elevations. Head to wind-sheltered terrain for the best riding.

Confidence

Moderate

Avalanche Summary

We haven't received any reports of recent avalanches. Looking forward, we expect that riders could trigger newly formed wind slabs in wind-loaded alpine terrain.

Please consider sharing your observations to the Mountain Information Network.

Snowpack Summary

The alpine has received upwards of 45 cm of snow over the past few days, with more forecast for Friday. Strong southwest wind is also forecast, which may redistribute the snow to cross-loaded and lee terrain features. Wind-protected areas surfaces remain soft.

Cornices are large and looming at this time of year.

Weather Summary

Thursday Night

Cloudy with 1 to 3 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Friday

Cloudy with 2 to 10 cm of snow with the most expected around White Pass. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Saturday

Cloudy with 2 to 10 cm of snow with the most expected around White Pass. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Sunday

Cloudy with 2 to 5 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs are most reactive during their formation.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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.