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Avalanche Forecast

Archived

Apr 17th, 2024–Apr 18th, 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.

Assess for warming-related avalanche problems during the heat of the day.

Confidence

High

Avalanche Summary

We haven't received any reports of new avalanches, although a few riders reported sluffing in steep alpine terrain. Looking forward, daytime warming will increase the likelihood of wet loose avalanches on sun-exposed slopes. Cornice falls are also possible.

Please consider sharing your observations to the Mountain Information Network.

Snowpack Summary

A wind affected snow surface is found in the alpine. Wind-sheltered terrain may hold settled soft snow. Steep sun-exposed slopes will moisten with daytime warming and freeze into a hard melt-freeze crust overnight.

Cornices are large and looming at this time of year.

Weather Summary

Wednesday Night

Clear skies. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Thursday

Clear skies. 20 km/h south ridgetop wind. Treeline temperature 2 °C. Freezing level rising to 1700 m.

Friday

Partly cloudy. 10 to 20 km/h southeast ridgetop wind. Treeline temperature 2 °C. Freezing level rising to 1600 m.

Saturday

Clear skies. 20 to 30 km/h east ridgetop wind. Treeline temperature 1 °C. Freezing level rising to 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.