Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Mar 11th, 2025–Mar 12th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
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
2: Moderate
The avalanche danger rating at treeline will be moderate
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.

Wind slabs are the main concern, however there is potential for persistent slab avalanches in the eastern portions of White Pass. Back off if you encounter whumpfing or shooting cracks.

Confidence

Moderate

Avalanche Summary

On the weekend, a snowmobiler remotely triggered a size 2 avalanche from 200 m away on a southeast aspect at 1500 m in the southeastern portion of the White Pass area. The fracture was approximately 50 cm deep See this MIN report for more details.

There have also been reports of a few wind slab avalanches up to size 1.5 releasing naturally on northerly aspects in White Pass.

Snowpack Summary

20-40 cm of recent new snow sits on a melt-freeze crust on solar slopes, hard wind-affected snow, or facets and surface hoar on shady slopes.

Reports from the eastern portion of the White Pass area indicate a surface hoar layer 30-50 cm below the surface that has been reactive in snowpack tests.

A weak layer of facets sitting on a crust that formed in early December is buried 60 to 150 cm deep on all aspects up to 1750 m. This layer has not produced recent avalanche activity or test results and is not currently a concern.

Snow depth varies from 100 cm at highway elevations to over 200 cm in the alpine.

Weather Summary

Tuesday Night

Partly cloudy. 10 to 20 km/h east ridgetop wind. Treeline temperature -8 °C.

Wednesday

Mix of sun and cloud. 20 to 40 km/h northeast ridgetop wind. Treeline temperature -6 °C.

Thursday

Mix of sun and cloud. 10 to 20 km/h southeast wind. Treeline temperature -7 °C.

Friday

Mix of sun and cloud. 5 to 15 km/h southeast wind. Treeline temperature -8 °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.
  • Avoid freshly wind-loaded terrain features.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.

Avalanche Problems

Wind Slabs

Small amounts of new snow each day and southerly winds are keeping windslabs reactive.

Aspects: North, North East, East, South East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2