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Archived

Avalanche Forecast

Feb 4th, 2025–Feb 5th, 2025
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Brandywine, Garibaldi, Spearhead, Tantalus.

Winds are increasing the load on slopes, use extra caution when transitioning into wind affected terrain.

Confidence

Moderate

Avalanche Summary

Over the weekend, numerous storm slab avalanches were reported size 1-2 on all aspects and elevations. They were triggered naturally, by skiers, vehicles and explosives. Some were triggered remotely or sympathetically. Slabs were up to 60 cm deep and ran on a crust or facet layer beneath the storm snow.

Snowpack Summary

50 to 80 cm of snow fell over the weekend. This snow was initially blown around by southeast winds, which have recently switched to outflow winds.

This recent snow is bonding poorly to an underlying weak layer formed during the January drought. Depending on aspect and elevation, the layer may exist as a hard crust, faceted grains and/or surface hoar.

The mid and lower snowpack is well-settled and bonded with no other layers of concern.

Weather Summary

Tuesday Night

Clear skies. 15 to 25 km/h outflow ridgetop wind. Treeline temperature -16 °C.

Wednesday

Mainly sunny. Light south ridgetop wind. Treeline temperature -12 °C.

Thursday

Mainly sunny. Light south ridgetop wind. Treeline temperature -10 °C.

Friday

Increasing cloudiness. 10-20 km/h west ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Conservative terrain selection is critical; choose gentle, low consequence lines.
  • Avoid lee and cross-loaded slopes at alpine and treeline elevations.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Avalanche Problems

Storm Slabs

Storm snow is beginning to settle and form slabs at more elevations. These slabs sit over a weak layer and remain triggerable by riders.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2

Wind Slabs

Outflow winds are continuing to build slabs on lee slopes. Take caution when transitioning into any wind affected terrain as winds have varied since the storm.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2.5