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

Dec 4th, 2025–Dec 5th, 2025

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

Regions

Sea To Sky, Brandywine, Garibaldi, Homathko, Spearhead, Tantalus, Sky Pilot.

New snow will continue to bury a potential weak layer. Test how the new snow is bonding before increasing your exposure.

Confidence

Moderate

Avalanche Summary

On Tuesday a period of sun and warming triggered numerous small (size 1) small wet loose avalanches, confined to steep south-facing terrain.

On Monday, a few small (size 1) wind slab avalanches where reported to have occurred on isolated steep terrain features that are adjacent to ridge crests.

If you're heading out into the backcountry, please consider sharing your observations on the MIN.

Snowpack Summary

Up to 15 cm of new snow overlies weak surface hoar and facets and may not be bonding well to old surfaces. A brief period of sun and warming has created a thin crust on steep south-to-west slopes, while wind-exposed features are smooth and hard.

A firm early-November crust lies 30–100 cm down with facets above and below; it isn’t a problem yet but could produce large avalanches with incoming snow. Expect 50–150 cm of snow at treeline and alpine, decreasing rapidly below 1600 m.

Weather Summary

Thursday Night
Mostly cloudy. 1 to 2 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1200 m.

Friday
Cloudy. 10 to 15 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1400 m.

Saturday
Mostly cloudy. 15 to 30 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.

Sunday
Mostly cloudy. 20 to 25 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for rapidly changing conditions during periods of heavy loading from new snow, wind, or rain.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Be cautious of buried obstacles, especially below treeline.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

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.