Avalanche Forecast
Avalanche Bulletin - Banff, Yoho, and Kootenay National Parks
We have increased the danger rating due to loose dry avalanches which can run further than expected in steep terrain, especially gullies where the sluff can collect and travel far. SH
Avalanche Problem 1: Loose Dry
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be cautious of sluffing in steep terrain.
Avalanche Summary
Avalanche control at Sunshine Village resulted in very thin wind slabs which were very stubborn in nature out of very steep terrain. The main concern was the facets which were initiated and acted as a loose dry avalanche running further than expected. Similar reports from recreational ski parties in steep gully terrain.
Snowpack Summary
The upper snow-pack is facetting with the cold temperatures and starting to sluff easily in steep terrain. Some thin, hard wind slabs observed in lee areas in the alpine. The Dec.15 layer of surface hoar (below 2100m) and hard surfaces or facets (depending on location) is down 15-30 cm. Some moderate shears have been observed around this interface.
Weather Forecast
Friday looks like a cold one with highs in the -20's. Some forecasts are calling for 15cm from Thursday to Sat with light to moderate winds shifting to the East. There is potential for temperatures to start moderating at the start of the New Year.
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The cold temperatures have facetted the surface snow, and once initiated can travel far. Manage your sluffs if skiing steep terrain and heads up for big spindrift if climbing in gullies.