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Avalanche Forecast

Nov 30th, 2024–Dec 1st, 2024
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Coquihalla, Manning, Skagit.

Seek out sheltered powder for better, safer riding.

Watch for wind-loaded pockets as this is where you'll trigger an avalanche.

Confidence

Low

Avalanche Summary

A few small (size 1) human-triggered wind slab avalanches were reported in the alpine on Friday by our neighbours in the USA. They seem to be running on a crust, that may have weak facet crystals above.

Please consider sharing any observations you have on the Mountain Information Network.

Snowpack Summary

Saturday's small amount of new snow adds to any wind loading that occurred on Friday loading a buried crust; possibly with small, weak facets on top. This caught riders off guard on Friday.

The bottom of the snowpack contains several crusts that have not been a concern.

Around 100 cm of snow can be found at treeline. This diminishes rapidly below about 1500 m.

Weather Summary

Saturday Night

Cloudy. 20 to 30 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1100 m.

Sunday

Mostly sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2700 m.

Monday

Sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 3200 m.

Tuesday

Sunny. 10 to 20 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 3200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Carefully evaluate steep lines for wind slabs.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Avalanche Problems

Wind Slabs

New wind slabs may be sliding on a buried crust. Test wind slabs on small features before committing to large slopes that the wind has loaded.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5

Loose Wet

This problem is likely small and only in steep, sunny slopes sheltered from the wind.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 1.5