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 29th, 2023–Dec 30th, 2023

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

Regions

Northwest Coastal, Boundary, Stewart, Ningunsaw, Ningunsaw, Ningunsaw.

Choose terrain that is not exposed to overhead hazard and seek out low angle slopes. Be especially cautious during periods of heavy rain or snow.

Confidence

Moderate

Avalanche Summary

On Thursday explosive control triggered several small wind slabs (up to size 1.5). Two large (size 2- 2.5) naturally occurring wind slabs were also seen. All occurred on north and westerly aspects.

Snowpack Summary

The snow surface is likely to be wet or moist from rain and warming up to 1500 m.

Recent snowfall amounts across the region range from 30 - 50 cm and have formed into reactive storm slabs.

At upper elevations, strong southwesterly winds have formed reactive wind slabs in leeward north and west facing terrain, while scouring windward slopes.

A layer of facets buried at the end of November can be found near the ground.

The snowpack depth varies between 200 and 300 cm at treeline.

Weather Summary

Friday Night

Light to moderate rain, or snow 5-10 cm, above 1500m, southeast winds 40-50 km/h, treeline temperatures 1 °C, freezing level up to 1600 m

Saturday

Cloudy with light to moderate rain or snow 5-15 cm above 1400 m, southeast winds 30 - 50 km/h, treeline temperature -1 °C, freezing level 1500 m.

Sunday

Mostly cloudy with trace amounts of new snow, south west wind 30 km/h, treeline temperature -7 °C.

Monday

Cloudy with no precipitation, easterly winds 10-20 km/h, treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain during periods of heavy loading from new snow, wind or rain.
  • Watch for changing conditions today, storm slabs may become increasingly reactive.
  • Keep in mind that wet avalanches can be destructive due to their high density.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.