Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Apr 7th, 2025–Apr 8th, 2025

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

Regions

North Rockies, Sugarbowl, East Kakwa, Kakwa, McGregor, Pine Pass, Tumbler.

New and reactive wind slabs are forming at upper elevations on north-facing terrain.

Watch for signs of instability like whumpfing or cracking beneath your feet.

Confidence

Moderate

Avalanche Summary

On Sunday, numerous wet loose natural avalanches occurred up to size 2.

Developing wind slabs may exist with new snow and moderate southwest winds, especially on north aspects at treeline and above. They may be reactive to rider triggers.

NOTE: Observations in this region are currently very limited.

Snowpack Summary

New snowfall of up to 10 cm overlies primarily moist surface conditions. North aspects above 2200 m are still holding dry snow. Solar aspects and lower elevations will begin to develop a crust or still present as moist snow below 1500 m.

Below this, a 5 to 25 cm crust from last week's rain event is present. This is capping a moist upper snowpack.

A persistent weak layer from early March, 40 to 80 cm deep, most likely exists as surface hoar on sheltered north and east aspects in the alpine. Its distribution is variable, and there have been no substantial reports of recent avalanches, but it should still be considered when evaluating slopes.

Weather Summary

Monday Night

Cloudy, 10 to 20 cm of new snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level falling to 1000 m.

Tuesday

Cloudy, 1 to 5 cm of new snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Wednesday

Cloudy with sunny periods and light flurries 2 to 5 cm. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Thursday

Mix of sun and cloud. 25 to 45 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Be careful as you transition into wind-affected terrain.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Avoid travelling on slopes below cornices.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.