Avalanche Forecast
Issued: Feb 2nd, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Avalanche Canada,
Avalanche Canada
Storm slabs sit over a weak layer and are easily triggerable by riders.
Summary
Confidence
High
Avalanche Summary
Over the weekend, numerous storm slab avalanches were reported, failing on a crust or facet layer beneath the storm snow. Most were artificially triggered by humans or explosives, size 1-2. Some were triggered remotely or sympathetically. The deepest crowns were on wind-loaded northerly aspects just below ridgetop.
Snowpack Summary
30 to 50 cm of snow fell over the weekend. Generally, snow quality has been excellent, with some redistribution near ridgetops from previous southwest wind.
This recent snow is bonding poorly to an underlying weak layer formed during the January drought. Depending on aspect and elevation, the layer may exist as a hard crust, faceted grains and/or surface hoar.
The mid and lower snowpack is well-settled and bonded with no other layers of concern.
Weather Summary
Sunday night
Cloudy with 1 to 5 cm of snow. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -18 °C.
Monday
A mix of sun and cloud. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -17 °C.
Tuesday
A mix of sun and cloud. 10 to 15 km/h northeast ridgetop wind. Treeline temperature -17 °C.
Wedneday
Sunny. Calm. Treeline temperature -14 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Keep your guard up as storm slabs may remain sensitive to human triggering.
- Use careful route-finding and stick to moderate angled slopes with low consequences.
- Avoid lee and cross-loaded slopes in the alpine.
- Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
Problems
Storm Slabs
Storm slabs sit over a weak layer and remain triggerable by riders. The most likely places to trigger an avalanche are in wind-loaded lee terrain features just below ridgetops and convex rolls.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 3rd, 2025 4:00PM
