Avalanche Forecast

Issued: Jan 13th, 2024 4:00PM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada wlewis, Avalanche Canada


As temperatures return to normal, continue to make conservative terrain choices in wind affected terrain. Wind slabs may remain reactive to human triggers for several days.




Avalanche Summary

Naturally triggered wind slabs were reported to size 2 on Friday, in wind affected alpine features. We expect reactivity to continue.

A machine remotely triggered an avalanche on a northeast facing slope at treeline on Tuesday. It's unknown what layer this avalanche failed on, likely within the recent storm snow or on the buried melt freeze crust.

Snowpack Summary

Dense wind slab exists on south facing slopes at treeline and above, from strong northerly winds. Slabs may overly wind affected surfaces or surface hoar in sheltered areas. Exposed north facing slopes may be stripped back to crust or older snow surfaces.

A crust is buried 60-80 cm deep and becomes thin and variable above 1900 m. Reports suggest this is beginning to break down.

A crust from early Dec sits 80-150 cm deep. Large avalanches observed in the region on January 6th are suspected of failing on this layer. While reports suggest this layer is becoming less reactive, it is most likely triggered in shallow areas at high elevations.

Snowpack depths vary from 120-230 cm at treeline and decrease rapidly below.

Weather Summary

Saturday Night

Clear with northerly winds increasing overnight to 70 km/h. Treeline temperatures around-15 °C.


Sunny with strong northerly winds easing slightly in the afternoon, 20-50 km/h. Treeline temperatures reach -10 °C.


Sunny with light northerly winds 10-20 km/h. Treeline temperatures around -8 °C.


Sunny with southwest winds 30-40 km/h. Treeline temperatures around -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Expect slab conditions to change drastically as you move into wind exposed terrain.
  • Watch for areas of hard wind slab on alpine features.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.


Wind Slabs

An icon showing Wind Slabs

Slabs are most prevalent at alpine elevations. Be aware wind loading may be found near ridgelines or lower on the slope than usual. Watch for crossloading in unusual features like mid slope gullies.

Aspects: East, South East, South, South West, West.

Elevations: Alpine, Treeline.


Possible - Likely

Expected Size

1 - 2

Valid until: Jan 14th, 2024 4:00PM