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 14th, 2022–Mar 15th, 2022

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 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.

Regions

Kootenay Boundary.

Avoid avalanche terrain at treeline and above. Give the storm snow time to bond to the underlying surfaces.

Confidence

Moderate - Uncertainty is due to the track & intensity of the incoming weather system.

Weather Forecast

Monday night: stormy with 10 to 20 cm of new snow expected. Moderate southwest winds and freezing levels falling to 1300 m. 

Tuesday: stormy with 10 to 25 cm of new snow expected. Moderate southwest winds and freezing levels rising to 1700 m.

Wednesday: a mix of sun and cloud with the possibility of light flurries bringing trace amounts of new snow. Light westerly winds and freezing levels rising to 1500 m.

Thursday: cloudy with the possibility of light flurries bringing trace amounts of new snow. Light to moderate southwest winds and freezing levels rising to 1700 m.

Avalanche Summary

We suspect rider triggerable wind and storm slabs will be found throughout the region on Tuesday.

Over the past few days several skier triggered storm and wind slab avalanches up to size 1.5 have been reported. These avalanches have all been at treeline and generally on north aspects.

Snowpack Summary

New wind and storm slabs will likely form throughout the day on Tuesday. Wind slabs will generally be found on north and east aspects. Moist snow could be observed below treeline.

A new surface hoar/crust layer has recently been buried. In the southern half of the region a crust from earlier this month exists on all aspects and elevations down up to 50cm. 

The late February layer is down 70cm on average. It consists of surface hoar crystals in shady, wind-sheltered areas around treeline and a crust on solar aspects.

Several other persistent weak layers from February and January can be found in the upper and mid snowpack.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be careful to keep storm day fever from luring you out into bigger terrain features.

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.