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Archived

Avalanche Forecast

Mar 24th, 2025–Mar 25th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Haines Pass, Tutshi, Wheaton, White Pass East, White Pass West, Yukon.

Be cautious as you transition into wind effected terrain.

If you notice signs of instability like shooting cracks. head to non-wind effected terrain.

Confidence

Moderate

Avalanche Summary

On Saturday, there were reports of wind slab avalanches up to size 1.5 on north-facing aspects at treeline in White Pass.

No other avalanche activity has been reported in recent days. If you do see an avalanche, please consider posting a MIN report.

Snowpack Summary

20-30 cm of recent snow, with greater amounts in western White Pass, is being redistributed by primarily southerly winds.

Reports indicate that eastern areas of White Pass have a shallower, weaker snowpack. A buried layer of surface hoar or a hard crust, 30 to 50 cm deep, has produced recent cracking, whumpfs, and remains reactive in tests.

A December crust with facets sits 100 to 150 cm deep on all aspects up to 1750 m. This layer has not shown recent activity or significant test results.

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

Weather Summary

Monday Night

Cloudy with 0 to 1 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -6 °C.

Tuesday

Cloudy with 0 to 3 cm of snow. 20 to 50 km/h south ridgetop wind. Treeline temperature -5 °C.

Wednesday

Mostly cloudy. 0 to 3 cm of snow 10 to 30 km/h southeast wind. Treeline temperature -4 °C.

Thursday

Partly cloudy. 10 to 30 km/h southeast wind. Treeline temperature -3 °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.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

Avalanche Problems

Wind Slabs

Reports indicate that wind slab has been most reactive on northern aspects where it overlies surface hoar or facets.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5