Avalanche Forecast

Issued: Nov 23rd, 2024 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

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Observations are limited and early-season hazards are abundant.

Take a conservative approach and watch for signs of instability as you transition into wind-affected terrain.

Summary

Confidence

Moderate

Avalanche Summary

In the past few days, avalanche observations have been limited to a few small (size 1) explosive-triggered dry loose and wind slab avalanches from north-facing alpine terrain.

Keep in mind that observations are very limited at this time of year. If you head out in the backcountry, let us know what you are seeing by posting to the Mountain Information Network! 🙏

Thanks to Frozen Pirate for this great conditions report from Allan Creek on Friday.

Snowpack Summary

Light snowfall will accumulate atop wind-affected surfaces in open areas and 20 to 30 cm of settling snow in sheltered areas.

A crust buried in early November is 50-90 cm below the surface. In some places, there may be weak facets or surface hoar above this crust, but the geographical extent of this weak layer is still uncertain.

Treeline snowpack depths average 80-150 cm.

Weather Summary

Saturday Night

Cloudy with snowfall, trace to 10 cm accumulation. 5 to 15 km/h southwest ridgetop wind. Treeline temperature drops to -10 °C.

Sunday

Mostly cloudy with light flurries. 5 to 15 km/h southwest ridgetop wind. Treeline temperature - 10°C.

Monday

A mix of sun and cloud with light snowfall. 5 to 15 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Tuesday

A mix of sun and cloud with light flurries. 15 to 50 km/h west ridgetop wind. Treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.

Problems

Wind Slabs

An icon showing Wind Slabs

Recent variable winds have formed wind slabs in open areas at treeline and above.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Nov 24th, 2024 4:00PM

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