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Archived

Avalanche Forecast

Nov 22nd, 2024–Nov 23rd, 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 are still 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

Strong northeast winds have moved and changed the surface snow at all elevations. Expect to find 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

Friday Night

Mostly cloudy. 30 km/h ridgetop northeast wind. Treeline temperature -15 °C.

Saturday

Mostly sunny. 30 to 40 km/h northeast ridgetop wind. Treeline temperature -15 °C with temperature inversion of -10 °C at 1500 m.

Sunday

Mostly sunny. 10 km/h northest ridgetop wind. Treeline temperature -13 °C with temperature inversion of -5 °C at 1800 m.

Monday

A mix of sun and cloud. 25 to 40 km/h southwest wind. Treeline temperature high -10 °C

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.
  • 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. It's a good idea to investigate before entering committing terrain.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5