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, 2022–Dec 30th, 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 possible, human triggered probable.
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

Vancouver Island, East Island, North Island, South Island.

New storm and wind slabs will build throughout the day. These new slabs likely won't bond well to the underlying crust. Be prepared to make conservative decisions.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported on Wednesday.

We are confident the likelihood of avalanches will increase throughout the day on Friday.

Snowpack Summary

Up to 20cm of new snow has likely been redistributed into wind slabs on north aspects and cross loading on east and west. A new crust likely extends from 1000m up to 1600m. Below 1000m the snow surface could still be moist.

Once again terrain below treeline has limited or no coverage.

Weather Summary

Thursday Night

Cloudy with 5 to 15mm of new precipitation . Moderate to strong southeast winds and Freezing levels rising to 1200m.

Friday

Stormy with 10 to 30mm of new precipitation expected. Light to moderate southwest winds and freezing levels rising to 1400m.

Saturday

Cloudy with light flurries bringing up to 5mm of new precipitation. Light to moderate westerly winds and freezing level around 1200m.

Sunday

Mostly cloudy with the possibility of light flurries bringing trace amounts of new snow. Light southerly winds and freezing levels around 1100m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be alert to conditions that change with aspect and elevation.
  • Closely monitor how the new snow is bonding to the crust.

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.