Avalanche Forecast

Issued: Nov 22nd, 2024 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada Avalanche Canada, Avalanche Canada

Avalanche danger is elevated from all the recent storms. Travel cautiously and keep your eyes open for signs of instability.

Summary

Confidence

Moderate

Avalanche Summary

Explosives triggered many large (up to size 3) storm slabs on Wednesday and Thursday, mostly in alpine terrain on westerly and northerly slopes. It remains possible that riders could trigger similar avalanches on the weekend as recent storm snow and incoming snow continue to bond to the snowpack.

Watch out for early-season hazards like creeks, logs, and rocks, particularly at lower elevations.

Snowpack Summary

Intense snow and strong wind from earlier this week have formed widespread storm slabs as well as wind slabs in lee terrain features. More snow and wind on Friday night will likely form new slabs.

Various melt-freeze crusts are found in the lower half of the snowpack, which are not concerning avalanche layers.

The snowpack is around 120 to 150 cm at treeline and decreases at low elevations.

Weather Summary

Friday Night

Cloudy with 10 to 20 cm of snow, while some local amounts may be much less to the east of the region. 10 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 2 to 10 cm of snow. 10 to 30 km/h south ridgetop wind. Treeline temperature -4 °C.

Sunday

Mostly cloudy with 0 to 5 cm of snow. 0 to 20 km/h south ridgetop wind. Treeline temperature -4 °C.

Monday

Mix of sun and cloud. 0 to 20 km/h east ridgetop wind. Treeline temperature -4 °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.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Start with conservative terrain and watch for signs of instability.

Problems

Storm Slabs

An icon showing Storm Slabs

Storm slab formation will likely continue Friday night and Saturday. Riders could also trigger deeper, older storm and wind slabs, particularly in steep, lee terrain features at higher elevations.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 3

Valid until: Nov 23rd, 2024 4:00PM

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