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Archived

Avalanche Forecast

Nov 22nd, 2024–Nov 23rd, 2024
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
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Birkenhead, Brandywine, Duffey, Harrison-Fraser, Homathko, Sea To Sky, South Chilcotin, South Coast Inland, Spearhead, Stein, Taseko.

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

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.

Avalanche Problems

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