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 27th, 2025–Dec 28th, 2025

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

Regions

Kootenay Boundary, Purcells, Bonnington, Grohman, Kootenay Pass, Norns, Ymir, Crawford, Moyie, Kokanee, Retallack, Valhalla, Whatshan.

Start small and test the bond of the recent storm snow before committing to steep slopes.

Confidence

Moderate

  • Uncertainty is due to how quickly the snowpack will recover and gain strength.

Avalanche Summary

Friday

  • A few size 1 to 2 slabs, both natural and human-triggerred occurred in several areas across the region.

Thursday

  • Several naturally triggered small storm slabs were reported near Whitewater.

Wednesday

  • Numerous storm slabs up to size 2 were triggered by explosive control near Kootenay Pass.

  • Several naturally triggered avalanches up to size 1.5 were observed near Whitewater.

  • A widespread natural avalanche cycle occurred in the Kokanee Glacier Park area.

Snowpack Summary

Between 25 to 60 cm of storm snow overlies a rain crust from Dec 24th that goes as high as 1700 to 2100 m in the region. Storm slabs may be poorly bonded to the new rain crust. At upper elevations, variable winds have blown storm snow into thicker and more reactive slabs in leeward areas.

The mid and lower snowpack is generally well-settled, but contains multiple crust layers with some overlying facets observed.

Weather Summary

Saturday Night
Mostly clear skies. 40 km/h northwest ridgetop wind. Treeline temperature -16 °C.

Sunday
Sunny. 20 km/h west ridgetop wind. Treeline temperature -12 °C.

Monday
Sunny. 30 km/h west ridgetop wind. Treeline temperature -8 °C.

Tuesday
Sunny. 20 km/h variable ridgetop wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be especially cautious as you transition into wind-affected terrain.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Closely monitor how the new snow is bonding to the crust.

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.