Avalanche Forecast
Issued: Mar 29th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Loose Wet.
mconlan,
Avalanche Canada
Slabs at higher elevations could remain touchy to riders. Expect to find varying conditions as you change aspect and elevation.
Summary
Confidence
High
Avalanche Summary
The last few days saw widespread small to large (size 1 to 2) storm slab and loose avalanches in alpine terrain on all aspects, generally out of steep terrain (40 to 45 degrees).
Looking forward, riders could trigger storm slabs within the recent snow. These slabs could be particularly reactive on steep northerly terrain at higher elevations. Loose wet activity may also become reactive during the heat of the day on sun-exposed slopes.
Snowpack Summary
20 to 40 cm of snow accumulated above around 1000 m to 1500 m over the past few days. All this new snow sits on surface hoar crystals that overly faceted or wind affect snow on northerly alpine terrain or a hard melt-freeze crust elsewhere. Thicker deposits may be found in lee terrain features near ridgetop. Sun-exposed slopes are likely to moisten with daytime heating.
A widespread crust that formed in early February is buried anywhere from 80 to 150 cm deep. This crust has a weak layer of faceted grains above it that are slowly strengthening. This layer is currently dormant.
The remainder of the snowpack is settled.
Weather Summary
Friday Night
Clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -6 °C.
Saturday
Partly cloudy. 10 to 20 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1600 m.
Sunday
Clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.
Monday
Clear skies. 10 to 20 km/h west ridgetop wind. Treeline temperature 3 °C. Freezing level 2300 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Closely monitor how the new snow is bonding to the old surface.
- Carefully evaluate steep lines for wind slabs.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
Problems
Storm Slabs
Recently formed storm slabs may not bond will to underlying layers, including weak surface hoar or facets on northerly terrain, or a hard melt-freeze crust elsewhere. Deeper deposits may be found in lee terrain features near ridges.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Wet loose activity is possible on sun-exposed slopes during the heat of the day.
Aspects: South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 30th, 2024 4:00PM
