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Archived

Avalanche Forecast

Jan 4th, 2024–Jan 5th, 2024
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
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
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: Birkenhead, Brandywine, Garibaldi, Homathko, Sea To Sky, Sky Pilot, Spearhead, Tantalus.

With a forecast of fresh snow falling with strong winds, expect to find an increasingly reactive snowpack and avalanche hazard highest at the end of the day.

Confidence

High

Weather Summary

Thursday Night

Cloudy. Up to 10 cm of snow by Friday morning. Moderate and increasing southwest ridgetop wind. Treeline temperature around -8 °C.

Friday

Snowing. 15-30 cm new snow accumlating by 4pm. Very strong southwest ridgetop wind. Treeline temperature around -5 °C.

Saturday

Cloudy. Up to 65 mm of precipitation in 48 hrs (falling as snow and ending early morning). Moderate west ridgetop wind. Treeline low around -6 °C.

Sunday

Mix of sun and clouds. no precipitation. Light northt ridgetop wind. Treeline low around -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Avoid shallow snowpack areas, rock outcroppings and steep convex terrain where triggering is most likely.

Avalanche Problems

Storm Slabs

Expect to find increasingly reactive slabs as fresh snow accumulates with strong and gusty southwest winds. Avalanche hazard will be highest at the end of the day.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1.5 - 2.5

Persistent Slabs

This problem is trending towards dormant, especially where a thick supportive crust is found down 20-40 cm (south of Whistler, this supportive crust reaches mountain tops). A heavy input of new snow may test this layer.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3