Avalanche Forecast
Issued: Jan 21st, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
kdevine,
Avalanche Canada
Storm slabs may be reactive to human triggering, especially in wind loaded areas, and at upper elevations. Watch for signs of instability such as whumphing, cracking and recent avalanches.
Summary
Confidence
Weather Forecast
TUESDAY NIGHT - Cloudy with scattered flurries, up to 5 cm / southwest wind, 10-30 km/h / alpine low temperature near -8
WEDNESDAY - Cloudy with scattered flurries / southwest wind, 10-25 km/h / alpine high temperature near -8
THURSDAY - Flurries, 5-10 cm / southwest wind, 25-50 km/h / alpine high temperature near -2 / freezing level 1400 m
FRIDAY - Flurries, 5-10 cm / southwest wind, 20-40 km/h / alpine high temperature near -2 / freezing level 1500 m
Avalanche Summary
There were several reports of natural, explosives, and human triggered avalanches up to size 1.5 on Sunday and Monday.
There were numerous wind and storm slab avalanches up to size 1.5 that were triggered by humans on Saturday. They occurred on all aspects and were generally 10 to 20 cm deep.
Snowpack Summary
Recent strong southerly wind and around 15 to 30 cm of recent snow has formed new storm slabs, with the most reactive slabs being in lee terrain features at higher elevations.
A layer of surface hoar may still be found roughly 80-120 cm deep in the Selkirks and 120-160 cm deep in the Monashees. A facet/crust layer from late November may be found near the bottom of the snowpack.
Terrain and Travel
- Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
Problems
Storm Slabs
Around 15 to 30 cm of recent snow along with strong southerly wind and recent warm temperatures will have formed fresh storm slabs. They will be deepest and potentially the most reactive in wind loaded areas.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 22nd, 2020 5:00PM
