Avalanche forecast

Microwave-Sinclair

Mar 16 – 17, 2025Avalanche Canada
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Avalanche danger

Tue
Wed
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low

Highlights

Reactivity of buried weak layers is uncertain. Avoid large, open features capable of producing large avalanches and watch for signs of instability as you travel.

Avalanche problems

  • Persistent Slabs

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

    Facets and/or surface hoar buried 50 to 80 cm deep is most prominent on north-facing slopes. Avoid areas with a thin or variable (thin to thick) snowpack.

Confidence

Low

Avalanche Summary

There has been no new avalanche activity reported in the last few days.

If you head into the backcountry, please consider posting a MIN report with photos and/or observations from your day.

Snowpack Summary

10 to 30 cm of recent new snow has buried a widespread layer of surface hoar, which overlies crust on solar aspects and at low elevations.

A layer of facets, surface hoar and/or a crust buried in mid February is 30 to 50 cm below the snow surface and has been reactive in snowpack tests.

Deeper in the snowpack, a weak layer of facets and a crust from early December can be found. This layer appears to be dormant but is still worth keeping in mind in thin snowpack areas in the alpine.

Weather Summary

Sunday Night

Partly cloudy. 20 to 30 km/h west wind. Treeline temperature -7 °C.

Monday

A mix of sun and cloud. 25 to 35 km/h northwest wind. Treeline temperature -3 °C.

Tuesday

Cloudy with flurries. 40 to 50 km/h southwest wind. Treeline temperature -4 °C.

Tuesday

Cloudy with flurries. 30 to 40 km/h southerly wind. Treeline temperature -1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid shallow snowpack areas, rocky outcrops, and steep terrain where triggering is most likely.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Make observations and continually assess conditions as you travel.

Regions covered