Avalanche Forecast
South Rockies
Recent precipitation fell as snow at higher elevations and a mix of snow and rain at lower elevations. Watch for signs of instability, such as cracking, whumpfing, and avalanche activity -- each elevation band will be different.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use caution in lee areas in the alpine and tree line, especially east facing slopes.
- Observe for signs of instability, such as cracking, whumpfing, and avalanche activity.
- Keep an eye out for localized areas of deeper snow accumulation, particularly on eastern slopes.
Avalanche Problem 2: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
High freezing levels and recent rain have moistened the snowpack at lower elevations. Use caution in terrain features where a small avalanche could have serious consequences.
Travel and Terrain Advice
- Avoid terrain traps such as gullies and cliffs where small avalanches can have high consequence.
- Watch for signs that the snow is moistening such as pin-wheeling and point-releases below cliffs.
Avalanche Summary
Many wet loose and dry loose avalanches to size 1.5 were reported on sunny aspects on Friday. Isolated natural storm slab activity to size 2 was also noted on east facing fan features, likely running during Thursday's storm.
Snowpack Summary
Around 20 to 30 mm of water equivalent fell in the region on Thursday into Friday. This would have fallen as snow at higher elevations (up to 25 cm of snow) and partially as rain at low elevations. This precipitation fell on a thick melt-freeze crust that exists on all aspects from recent warm temperatures and rain, except for possibly higher elevations on north aspects. The upper snowpack may still be wet at low elevations.
A weak layer of surface hoar buried mid-February exists in parts of the region around 50 to 80 cm deep. The lower snowpack is weak with a combination of crusts and facets near the bottom of the snowpack that are widespread.
Weather Forecast
We're looking at seasonal temperatures and generally light snowfall accumulations in a north / easterly flow pattern. The very north of the region may see 10-15cm snow through Saturday.
SATURDAY: Cloudy with light snowfall, accumulation 5-10 cm with more possible in northern sections of the region, light northeasterly winds, alpine temperature -1 C, freezing level 1500 m.
SUNDAY: Cloudy with light snowfall, accumulation 5 to 10 cm, light to moderate northerly winds, alpine temperature -3 C, freezing level 1100 m.
MONDAY: Cloudy with isolated flurries, moderate westerly winds, alpine temperature +1 C, freezing level rising to 1600 m.
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Around 15 to 25 cm of snow fell at higher elevations in the region, with north west winds. Watch for signs of poor bonding of the new snow with underlying surfaces.