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Archived

Avalanche Forecast

Mar 3rd, 2025–Mar 4th, 2025
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Brandywine, Garibaldi, Homathko, Sea To Sky, Spearhead, Tantalus.

A hard crust on the snow surface will reduce the likelihood of triggering buried weak layers, but the consequences of an avalanche on these layers remain high.

Confidence

Moderate

Avalanche Summary

Last week, a flurry of very large, scary persistent slab avalanche activity was reported at alpine and treeline elevations. Naturals and remotely triggered slabs size 2 to 3 showed wide propagation, with crowns 50 to 100+ cm deep. These avalanches are becoming less likely, but consequences of triggering one remain high.

Snowpack Summary

A dusting of new snow sits over a widespread surface crust.

60 to 80 cm of well-settled snow sits over a weak layer of facets and surface hoar buried in mid February. Recent snowpack tests indicate this layer may finally be starting to gain strength.

Another weak layer, from late January, is buried 80 to 120 cm deep. This may present as a crust on sunny slopes, sugary facets in most places, and surface hoar in sheltered spots. Large natural, remote and human-triggered avalanches were reported on this layer last week.

For more details, check out Zenith's snowpack update from Friday.

Weather Summary

Monday night

Cloudy. 10 to 20 km/h southeast ridgetop wind. Treeline temperature -2°C. Freezing level 1200 m.

Tuesday

Mostly cloudy with 1 to 5 cm of new snow. 30 to 50 km/h southeast ridgetop wind. Treeline temperature -1°C. Freezing level 1300 m.

Wednesday

5 to 10 cm of snow overnight then clearing. 10 to 20 km/h east ridgetop wind. Treeline temperature -1°C. Freezing level 1400 m.

Thursday

Sunny. 20 to 30 km/h northeast ridgetop wind. Treeline temperature 0°C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be mindful that deep instabilities are still present and have produced recent large avalanches.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.
  • Uncertainty is best managed through conservative terrain choices.

Avalanche Problems

Persistent Slabs

Buried weak layers were reactive last week. Although their likelihood is decreasing, the consequences of triggering an avalanche on these layers are high.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3