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Avalanche Forecast

Archived

Apr 23rd, 2025–Apr 24th, 2025

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Lizard-Flathead, South Rockies, Akamina, Flathead, Lizard, Crawford, Moyie, St. Mary, Bull, Crowsnest North, Crowsnest South, Elkford East, Elkford West.

Riders may still trigger wind slabs in the alpine.

Assess conditions as you go, and consider terrain traps below you before committing to your line.

Confidence

Moderate

Avalanche Summary

On Monday, a few naturally triggered storm slabs and wet loose avalanches up to size 1.5 were reported in the alpine near Fernie.

NOTE: Observations are currently very limited.

Snowpack Summary

Up to 30 cm of recent snow in localized areas and strong variable wind may have formed wind slabs on lee slopes at upper elevations. However, triggering these slabs will become unlikely on sunny slopes that have a sun crust.

This snow overlies a robust crust everywhere except northerly aspects at upper elevations, where old snow may have remained dry.

The mid/lower snowpack is well settled and strong.

Lower elevations are melting out rapidly.

Weather Summary

Wednesday Night

Partly cloudy. 10 to 20 km/h east ridgetop wind. Treeline temperature -1 °C. Freezing level 2000 m.

Thursday

Mix of sun and clouds. 20 to 30 km/h east ridgetop wind. Treeline temperature 3 °C. Freezing level 2300 m.

Friday

Sunny. 20 km/h east ridgetop wind. Treeline temperature 4 °C. Freezing level 2700 m.

Saturday

Mix of sun and cloud. 10 km/h northeast ridgetop wind. Treeline temperature 6 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.
  • Avoid sun-exposed slopes, especially if the snow surface is moist or wet.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Make observations and continually assess conditions as you travel.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.