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

Apr 3rd, 2021–Apr 4th, 2021

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

Regions

Kootenay Boundary.

A storm may increase avalanche danger for parts of the region. Danger will be LOW until at least ~10 cm of snow accumulates. Watch for changing conditions over the course of the day.

Confidence

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

Weather Forecast

SATURDAY NIGHT: Increasing clouds, 40 km/h southwest wind, alpine temperature 0 C, freezing level 2100 m.

SUNDAY: Cloudy with snowfall, accumulation 5 to 15 cm with local amounts up to 20 cm possible, 20 km/h southwest wind, alpine temperature -4 C, freezing level 1600 m.

MONDAY: Clear skies, 10 km/h northwest wind, alpine temperature 1 C, freezing level rising to 2200 m.

TUESDAY: Clear skies, 10 km/h southwest wind, alpine temperature 1 C, freezing level 2300 m.

Avalanche Summary

Looking forward, avalanche activity may spike during Sunday as the new snow accumulates, particularly where it overlies a hard melt-freeze crust.

Snowpack Summary

New snow is forecast at higher elevations for Sunday with elevated wind. The snow will fall onto a hard melt-freeze crust everywhere except above 2000 m on north aspects, where it will fall onto previously wind-affected snow. Below the rain-snow line, rain will soak an already wet snowpack.

Terrain and Travel

  • Watch for fresh storm slabs building throughout the day.
  • Wind slabs are most reactive during their formation.
  • Closely monitor how the new snow is bonding to the crust.
  • Make observations and assess conditions continually as you travel.

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.