Avalanche Forecast
Issued: Jan 28th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Loose Wet.
ahanna,
Avalanche Canada
Avalanche danger will increase through the day Wednesday as 35-45 cm of new snow and strong winds form reactive storm slabs at upper elevations.
Summary
Confidence
Weather Forecast
Tuesday night: Flurries bringing a trace of new snow. Light south winds. Freezing level 1300 m.
Wednesday: 35-45 cm of new snow with rain below 900 m. Strong southwest winds. Freezing level 1200 m.
Thursday: 10-15 cm of new snow. Southwest winds building to strong. Freezing level 1900 m.
Friday: Broken cloud with flurries starting in the afternoon. Strong southwest winds. Freezing level 2500 m. Storm totals for Friday night/Saturday are looking to be in the range of of 50-80 mm of rain.
Avalanche Summary
No new avalanche observations since Saturday when small pockets of loose wet snow (less than size 1) were reactive to skier traffic.
Snowpack Summary
35-45 cm of new snow will fall over the day above 1000 m. Dry snow at upper elevations will be 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.
Terrain and Travel
- Minimize exposure during periods of heavy loading from new snow, wind or rain.
- Storm slab size and sensitivity to triggering will likely increase through the day.
- Be alert to conditions that change with elevation and wind exposure.
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
Loose Wet
Loose wet avalanches are possible in steep terrain due to rain and warm temperatures at lower elevations.
Aspects: All aspects.
Elevations: Below Treeline.
Likelihood
Expected Size
Valid until: Jan 29th, 2020 5:00PM
