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Archived

Avalanche Forecast

Feb 2nd, 2025–Feb 3rd, 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
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

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

Storm slabs sit over a weak layer and are easily triggerable by riders.

Confidence

High

Avalanche Summary

Over the weekend, numerous storm slab avalanches were reported, failing on a crust or facet layer beneath the storm snow. Most were artificially triggered by humans or explosives, size 1-2. Some were triggered remotely or sympathetically. The deepest crowns were on wind-loaded northerly aspects just below ridgetop.

Snowpack Summary

30 to 50 cm of snow fell over the weekend. Generally, snow quality has been excellent, with some redistribution near ridgetops from previous southwest wind.

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

Sunday night

Cloudy with 1 to 5 cm of snow. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -18 °C.

Monday

A mix of sun and cloud. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -17 °C.

Tuesday

A mix of sun and cloud. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -17 °C.

Wedneday

Sunny. Calm. Treeline temperature -14 °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.
  • Use careful route-finding and stick to moderate angled slopes with low consequences.
  • Avoid lee and cross-loaded slopes in the alpine.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.

Avalanche Problems

Storm Slabs

Storm slabs sit over a weak layer and remain triggerable by riders. The most likely places to trigger an avalanche are in wind-loaded lee terrain features just below ridgetops and convex rolls.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2.5