Avalanche Forecast
Issued: Dec 27th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Avalanche Canada,
Avalanche Canada
6:40 AM Update: Expect increased avalanche danger during the stormy period.
Summary
Confidence
Moderate
Avalanche Summary
Skiers near Cypress reported one small avalanche in this MIN post on Thursday.
During the storm, large, natural and human triggered avalanches can be expected.
Observations have been limited in this region. If you go into the backcountry, please consider submitting a Mountain Information Network (MIN) post.
Snowpack Summary
20 to 50 cm is expected by end of day Saturday at upper elevations. This snow will be transported by strong south winds, building reactive cornices and slabs on lee slopes.
Above 1000 m, this snow falls on about 60 cm of previous storm snow, which is reportedly well bonded to the well-settled snowpack below. Below 1000 m, there has been mixed rain and snow, making for moist snow surface conditions
Check out this MIN for conditions at Hollyburn Mountain.
Weather Summary
Friday Night
Cloudy with 10 to 25 cm of snow. 30 to 60 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.
SaturdayCloudy with 10 to 25 cm of snow. 50 to 70 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1100 m.
Sunday
Partly cloudy with trace precipitation. 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.
MondayMostly cloudy with up to 5 mm of precipitation. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid avalanche terrain during periods of heavy snowfall.
- Storm slab size and sensitivity to triggering will likely increase through the day.
- Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.
Problems
Storm Slabs
Storm slabs will be deeper and easier to trigger on lee slopes where the wind has created fresh deposits.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 28th, 2024 4:00PM
