Avalog Join
Archived

Avalanche Forecast

Jan 31st, 2025–Feb 1st, 2025
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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: Brandywine, Garibaldi, Harrison-Fraser, Homathko, Sea To Sky, Spearhead.

Fresh snow is accumulating over unstable surfaces, creating very dangerous avalanche conditions. Stick to simple, low angle terrain and avoid overhead hazard.

Confidence

High

Avalanche Summary

Observations have been limited during the storm. On Friday storm slabs were reported size 1-1.5. They were triggered naturally, by skiers, explosives and vehicles. Some were triggered remotely or sympathetically.

Storm slab size will increase as snowfall continues overnight.

Snowpack Summary

Light snowfall continues. 30 to 50 cm of new snow has accumulated since Thursday night. Near ridgetops, moderate to strong southwest wind has loaded new snow into leeward terrain features. The new snow is not expected to bond well to underlying surfaces including a hard crust, facets and/or surface hoar.

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

Weather Summary

Friday night

Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature dropping from -3 to -10 °C. Freezing level dropping from 1000 m to valley bottom.

Saturday

Cloudy with 5 to 10 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Sunday

Cloudy with 5 to 10 cm of snow. 20 to 30 km/h southeast ridgetop wind. Treeline temperatures -11 °C.

Monday

5 to 10 cm of snow overnight then a mix of sun and cloud. 20 km/h southeast ridgetop wind. Treeline temperatures -13 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
  • Don't let the desire for deep powder pull you into high consequence terrain.
  • Closely monitor how the new snow is bonding to the old surface.

Avalanche Problems

Storm Slabs

Fresh storm slabs will likely remain reactive throughout the weekend. They can be most easily triggered in wind-loaded terrain features and where they sit poorly bonded to a crust or weak grains.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2.5