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

Feb 19th, 2025–Feb 20th, 2025

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

New snow and moderate winds may add to existing wind slab problems. Warming temperatures may increase their sensitivity to triggering.

Confidence

Moderate

Avalanche Summary

At the time of publishing, no new avalanches were reported in the past 7 days.

Snowpack Summary

An average of 10 cm of recent storm snow, has fallen with variable wind, potentially forming wind slab on all aspects. In sheltered terrain this new snow may overlie soft, faceted snow or surface hoar. In exposed terrain it will overlie a sun crust or firm wind-affected snow.

In the Manning park area there has been less snow and significantly less wind.

At lower elevations a new crust is on or near the surface.

A weak layer from late January, buried 40 to 60 cm deep, is a hard crust in many areas but consists of facets or surface hoar on sheltered upper-elevation slopes.

A crust from December is buried 80 to 140 cm deep, with facets around it in shallow snowpack areas. Otherwise, the lower snowpack is strong and bonded.

Weather Summary

Wednesday Night

Cloudy with up to 5 to 15 mm of mixed precipitation. 30 to 50 km/h southwest ridgetop wind. Freezing level falling to 1000 m.

Thursday

Cloudy with up to 10 mm of mixed precipitation. 20 to 40 km/h southwest ridgetop wind. Freezing level rising 1300 m.

Friday

Cloudy with up to 5 mm of mixed precipitation. 30 to 50 km/h southwest ridgetop wind. Freezing level 1800 m.

Saturday

Cloudy with up to 10 mm of mixed precipitation. 40 to 60 km/h southwest ridgetop wind. Freezing level 2200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Closely monitor how the new snow is bonding to the old surface.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.