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

Mar 8th, 2025–Mar 9th, 2025

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

Regions

Kitimat, Nass, Rupert, Seven Sisters, Shames, Howson.

Although avalanche activity on the persistent slab has decreased in this area, it is not gone.

Use caution in steep, north-facing terrain and areas with a low snowpack.

Confidence

Moderate

Avalanche Summary

Persistent slabs were reactive on the February weak layer early this week, with naturals up to size 3. Activity tapered dramatically by Tuesday.

A skier triggered a small (10 cm thick) wind slab that formed over our latest surface hoar layer on Thursday. Along with a renewed possibility of large persistent slab avalanche activity, it's a glimpse of what we should expect as more new snow accumulates.

Weather Summary

Saturday Night

Cloudy with 0 to 5 cm of snow. 20 to 50 km/h south ridgetop wind. Treeline temperature -5 °C. Freezing level 900 m.

Sunday

Cloudy with 1 to 4 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 900 m.

Monday

Cloudy with increasing flurries bringing 5 - 15 cm of new snow, including overnight amounts. 40 - 80 km/h south ridgetop wind, increasing. Treeline temperature -2 °C. Freezing level 800 m.

Tuesday

A mix of sun and cloud with isolated flurries. 30 to 40 km/h southwest ridgetop wind. Treeline temperatures -2 °C. Freezing level 900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.

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.