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Archived

Avalanche Forecast

Nov 23rd, 2024–Nov 24th, 2024
Alpine
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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: Tutshi, Wheaton, White Pass East, White Pass West, Yukon.

Use caution in steep terrain; avalanches may still be possible on wind-loaded slopes.

Confidence

Moderate

Avalanche Summary

Some small avalanches were observed Thursday in steep alpine terrain near White Pass. Check this MIN post for further details.

Early season reports have been extremely limited. Please consider helping forecasters and your backcountry community by submitting your observations to the Mountain Information Network.

Snowpack Summary

Previous strong northeasterly winds moved and changed the surface snow at all elevations. Expect to find widespread sastrugi snow in open exposed areas, and hard wind slabs on leeward south and westerly slopes.

The lower snowpack is generally strong, with the potential for various crusts at the base.

Snow depths are highly variable across the region with approximately 50 cm around treeline, and up to 100 cm in wind-loaded locations in the alpine.

Weather Summary

Saturday Night

Mostly clear. 20 to 40 km/h northeast ridgetop wind. Treeline temperature -14 °C.

Sunday

Mostly sunny. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -15 °C with a temperature inversion of -5 °C at 1800 m.

Monday

Cloudy. 50 to 60 km/h southwest ridgetop wind. Treeline temperature -10 °C

Tuesday

Cloudy with 0 to 2 cm of snow. 15 to 20 km/h variable ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
  • Watch for areas of hard wind slab on alpine features.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

Avalanche Problems

Wind Slabs

Previous strong northeasterly winds built slabs in leeward features. These slabs may still be possible to trigger in isolated areas.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5