Avalanche Forecast
Issued: Jan 25th, 2020 8:00AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Kate Ryan,
Parks Canada
Heads up if the sun comes out today!
Give fresh storm slabs a chance to bond to old layers.
Summary
Weather Forecast
Today: A mix of sun and cloud. No precip. Freezing levels at 1300m with alpine high of -5 C. Winds light from the south.
Tonight: Cloudy with clear periods and isolated flurries. Winds light from the south. Freezing level 900m.
Tomorrow: Flurries, 7cm. Freezing levels rising to 1600m. Winds light from the SW gusting to 45 km/h.
Snowpack Summary
20cm new storm snow was accompanied by light to mod S winds and warm temperatures. Rain below 1000m yesterday. New snow overlies a strong midpack, with the exception of the Dec 27th surface hoar/crust down 100cm and the Dec 11th surface hoar down 150cm.
Avalanche Summary
Yesterday's artillery control produced numerous size 2-2.5 avalanches, and a few size 3.5s. A natural cycle was also occurring the past two days from steep alpine terrain, and in some cases running to valley bottom. Skier accidentals this week on MacDonald West Shoulder # 4 (see photo here), Video Peak and Grizzly Colouir (see MIN).
Confidence
Problems
Storm Slabs
20cm of new snow in the past 2 days fell with warm temperatures and moderate S winds, promoting the development of reactive slabs. The sun could initiate another natural avalanche cycle today.
- Avoid convexities and unsupported features.
- Use caution in lee and cross-loaded terrain near ridge crests.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 26th, 2020 8:00AM
