Avalanche forecast

Microwave-Sinclair

Mar 15 – 16, 2026Avalanche Canada
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Archived · expired 7 months ago

Avalanche danger

Tue
Wed
Alpine
4 · High
Treeline
4 · High
Below
2 · Moderate
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Highlights

New snow and strong southerly winds will build reactive storm slabs on Monday.

Storm slabs have the potential to step down and trigger large, destructive avalanches.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–2.5

    A buried layer of facets in the snowpack is expected to be more reactive in wind-affected thin rocky terrain features. Triggering of this layer is less likely where a supportive crust is present above.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2

    Moderate to heavy precipitation and strong southerly winds will build reactive storm slabs on Monday.

Confidence

Moderate

  • Deep persistent slabs could become more likely with the forecast weather.
  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

No new avalanches have been reported in the past few days.

If you head out in the backcountry, let us know what you're seeing by submitting a MIN report.

Snowpack Summary

Sunday Night
Cloudy. 15 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Monday
Cloudy. 10 to 20 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Tuesday
Mostly cloudy. 15 to 20 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday
Mix of sun and clouds. 1 to 4 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Weather Summary

Sunday Night
Cloudy. 15 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Monday
Cloudy. 10 to 20 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Tuesday
Mostly cloudy. 15 to 20 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday
Mix of sun and clouds. 1 to 4 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Watch for fresh storm slabs building throughout the day.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

Regions covered