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 9th, 2024–Mar 10th, 2024

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

Regions

Northwest Coastal, Boundary, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Ningunsaw, Ningunsaw, Ningunsaw.

Choose conservative, low consequence terrain.

Storm slabs will remain rider triggerable and have the potential to step down to deeper layers.

Confidence

Moderate

Avalanche Summary

Rider and remotely triggered persistent slab avalanches continue to occur in the region. Some have been triggered in low angle terrain.

Snowpack Summary

Ongoing snowfall and southerly winds have formed reactive storm and wind slabs.

Several persistent weak layers are likely buried between 70 and 150 cm deep. These weak layers include hard crusts with overlying weak facets and surface hoar. Avalanches continue to fail on these layers.

Weather Summary

Saturday Night

A mix of cloud and clear skies with 1 to 3 cm of new snow. 10 to 20 km/h south alpine wind.  Treeline temperature -4°C.

Sunday

Cloudy with 5 to 15 cm of new snow. 40 to 70 km/h southeast alpine wind. Treeline temperature -1°C.

Monday

Cloudy with up to 5 cm of new snow. 40 to 70 km/h southeast alpine wind. Treeline temperature -3°C.

Tuesday

Cloudy with 20 to 30 cm of  new snow. 30 to 60 km/h southwest alpine wind. Treeline temperature -4°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Remote triggering is a big concern, be aware of the potential for wide propagations and large, destructive avalanches at all elevations.
  • Caution required around non obvious avalanche terrain like road cutbanks, cutblocks and other non obvious avalanche terrain
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Be especially cautious 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.

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.