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Avalanche Forecast

Archived

Apr 13th, 2026–Apr 14th, 2026

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 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.

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Natural avalanches are possible; human-triggered avalanches are likely.

Use conservative terrain while the avalanche danger is elevated.

Confidence

Moderate

  • We are uncertain due to the timing, track, and intensity of the incoming weather system.
  • We are confident the likelihood of avalanches will increase with the forecast weather.

Avalanche Summary

No recent avalanches have been reported. We expect avalanche activity to increase with the forecasted weather.

If you get out into the backcountry, post a MIN!

Snowpack Summary

20 to 30 cm of new snow is expected by the end of the forecast period on Tuesday, with the highest amounts in the western part of the region (Allison Pass receiving closer to 5 cm). This new snow overlies a melt-freeze crust, moist snow, or isothermal conditions, depending on aspect and elevation.

The snowpack has undergone multiple warming and cooling cycles, forming a series of crusts interspersed with dense, rounded grains.

Snowpack depth decreases significantly below 1000 m.

Weather Summary

Monday Night

Cloudy. 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Tuesday

Cloudy. 15 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Wednesday

Mostly cloudy. 15 to 25 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Thursday

Mix of sun and clouds. 2 to 10 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.
  • Don't let storm day fever lure you into consequential terrain.

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.