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Avalanche Forecast

Dec 1st, 2024–Dec 2nd, 2024
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Boundary, East Stikine, Ningunsaw, Northwest Coastal, Stewart, West Stikine.

Avoid being in or under avalanche terrain during periods of rapid loading from new snow and wind.

Confidence

Low

Avalanche Summary

Numerous small natural and explosive triggered wind slab and dry loose avalanches were reported on Saturday and Sunday.

With continued precipitation and strong winds in the forecast we can expect avalanches to increase in size on Monday.

Please consider submitting your observations to the Mountain Information Network.

Snowpack Summary

More precipitation and strong southwesterly winds in the forecast are expected to continue building storm slabs throughout the night and into Monday.

100 cm or more of recent storm snow may be overlying variable snow surfaces, including small facets and/or surface hoar in sheltered areas and heavily wind-affected snow in exposed terrain.

A crust from early November can be found down 130 to 180 cm. Below this prominent crust are several other crust layers from October.

 

Weather Summary

Sunday Night

Cloudy with 25 to 35 cm of snow. 45 to 55 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Monday

Cloudy with 25 to 35 cm of snow expected. Light to moderate rain below 750 m. 45 to 55 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1000 m.

Tuesday

Cloudy with 10 to 20 cm of snow above the snow line, light to moderate rain below. 30 km/h southwest ridgetop wind. Freezing level rising to 1750 m.

Wednesday

Cloudy with light to moderate rain, possible snow at high elevations. 15 km/h southwest ridgetop wind. Freezing level around 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.
  • Don't let the desire for deep powder pull you into high consequence terrain.
  • Be aware of the potential for human triggerable storm slabs at lower elevations, even on small features.

Avalanche Problems

Storm Slabs

Avalanches will be most likely where new snow and wind are rapidly loading slopes. The largest and most reactive slabs will likely be on north through east aspects below ridgetops.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1.5 - 3.5