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Avalanche Forecast

Archived

Apr 3rd, 2025–Apr 4th, 2025

Alpine
Natural avalanches unlikely.
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, Haines Pass.

Expect conditions to change with elevation, aspect and time of day due to melt-freeze cycles.

Reduce your time under cornices and watch for wet loose avalanches if the spring suns come out.

Confidence

Moderate

Avalanche Summary

Numerous wet avalanches were reported from steep, south-facing slopes in the alpine due to strong solar warming. On Monday, large persistent slabs were observed out of moraine features with shallow faceted snowpack outside the region.

Thanks for sharing your observations with the Mountain Information Network after a day in the backcountry.

Snowpack Summary

Wind has redistributed recent snow, forming pressed surfaces and wind slabs in open terrain while leaving 15-25 cm of settled snow in sheltered areas. Wind slabs may be more predominant on the east side of White Pass where the wind hit harder. A melt-freeze crust covers most solar slopes.

A buried surface hoar or crust layer, 40 to 60 cm deep, is variable in distribution. A December crust with facets, 100 to 150 cm deep on all aspects up to 1750 m, has shown no significant test results.

Snow depth ranges from 100 cm at highway elevations to over 300 cm in the alpine.

Weather Summary

Thursday Night

Clear with cloudy periods. 30 to 50 km/h south ridgetop wind. Treeline temperature -4 °C. Freezing level returning to valley bottom.

Friday

Mostly cloudy. 30 to 50 km/h south ridgetop wind. Treeline temperature +1 °C. Freezing level 1300 m.

Saturday

Cloudy with up to 5 cm of new snow. 40 to 60 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Sunday

Cloudy with up to 5 cm of new snow. 40 to 60 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • 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.