Avalanche Forecast
Issued: Jan 29th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
ahanna,
Avalanche Canada
Storm slabs will likely remain sensitive to human triggering at upper elevations Thursday. Watch for deep pockets of wind loaded snow in alpine lees.
Summary
Confidence
High - We have a good understanding of the snowpack structure and confidence in the weather forecast
Weather Forecast
Wednesday night: Clear skies Light to moderate west to southwest winds. Freezing level 1100 m.
Thursday: Mix of sun and cloud, flurries starting in the afternoon bringing around 5 cm new snow, light rain below 1000 m. Southwest winds building to strong. Freezing level 1000-1500 m.
Friday: 80-100 mm of rain to ridgetop . Extreme southwest winds. Freezing level 2500 m.
Saturday: 60-100 mm water equivalent in precipitation overnight, mostly falling as rain to ridgetop, turning to snow in the early morning above 500 m. Moderate northwest wind. Freezing level 500 m.
Avalanche Summary
No new avalanche observations since Saturday when small pockets of loose wet snow (less than size 1) were reactive to skier traffic.Â
Snowpack Summary
30-40 cm of new snow above 1100 m. Drier snow at upper elevations has been redistributed by strong southwest wind. A rain crust up to 1400 m sits 30-60 cm below the surface, elevation dependent. The snowpack is strong and settled from earlier rain, and now 200-300 cm deep around the peaks of the north shore mountains.Â
Terrain and Travel
- Be alert to conditions that change with elevation and wind exposure.
- Be carefull around freshly wind loaded features.
Problems
Storm Slabs
Storm slabs will form above 1000 m where snowfall accumulates, 35-45 cm expected through the day. Dry snow at upper elevations will be redistributed by strong southwest wind, forming deep wind-loaded pockets in lee features.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 30th, 2020 5:00PM
