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Archived

Avalanche Forecast

Dec 19th, 2024–Dec 20th, 2024
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
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
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

Regions: Birkenhead, Duffey, South Chilcotin, South Coast Inland, Stein, Taseko.

Continuously monitor conditions as you move through terrain

Storm slabs may be more reactive at higher elevations

Confidence

Moderate

Avalanche Summary

Many natural and explosive triggered storm slab avalanches up to size 2.5 were reported on Wednesday. These avalanches occurred on all aspects at treeline and above.

A few of these avalanches had impressive propagation.

Snowpack Summary

the majority of this precipitation will likely fall as rain, saturating the upper snowpack. In the alpine most of this precipitation will fall as snow. This new snow will be  accompanied by southerly winds likely forming deep deposits on northerly aspects.

30 to 60 cm overlies a crust on south aspects and all aspects below 1800 m. A layer of surface hoar could be found just above this layer in sheltered terrain at treeline.

Snow depths at treeline are around 80-120 cm.

Weather Summary

Thursday NightCloudy with up to 15 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -2 °C.FridayMostly cloudy with up to 10 mm of mixed precipitation. 30 to 50 km/h southeast ridgetop wind. Freezing level rising to 1800 m.

Saturday

Mostly cloudy with up to 5 mm of mixed precipitation. 25 to 50 km/h southeast ridgetop wind. Freezing level rising to 1900 m.

Sunday

Mostly cloudy with up to 5 cm of snow. 30 to 50 km/h southeast ridgetop wind. Freezing level around 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be careful as you transition into wind-affected terrain.
  • Be alert to conditions that change with aspect and elevation.

Avalanche Problems

Storm Slabs

Rider triggerable storm slabs may still be found at higher elevations. The largest and most reactive slabs will likely be found on northerly aspects.

Be aware of the potential for wide propagation due to buried weak layers.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2.5