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Archived

Avalanche Forecast

Mar 17th, 2025–Mar 18th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: East Island, North Island, South Island, Vancouver Island, West Island.

Stay vigilant of changing conditions, especially when the March sun comes out.

Carefully manage your exposure to overhead hazards during periods of sun.

Confidence

Moderate

Avalanche Summary

Small storm slabs (size 1) were reactive to riders on alpine convex slopes near Cokely on Sunday.

Observations of small natural avalanches (dry and wet loose, wind and storm slabs) from this stormy weekend are still being reported throughout the region.

Thanks for sharing your observations via the MIN if you are going out into the backcountry.

Snowpack Summary

The region received 15 to 20 cm of new snow this past weekend, accompanied by moderate to strong southerly wind. Variable conditions exist at upper elevations and reactive slabs are found at upper elevations. Southerly slopes were affected by the sun, resulting in heavy wet snow sitting on a thin crust.

A robust crust, formed in early March, can be found down 50 to 100 cm. The snow above is well bonded to this crust. Below this, the snowpack is well consolidated and strong.

Weather Summary

Monday Night

Partly cloudy isolated flurries. 20 to 30 km/h northwest ridgetop wind. Treeline temperature -6 °C. Freezing level 500 m.

Tuesday

Mostly sunny. 15 to 25 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1200 m.

Wednesday

Cloudy with 10 to 25 cm of new snow. 60 to 80 km/h south ridgetop wind. Treeline temperature -4°C. Freezing level 1000 m.

Thursday

Cloudy with 5 to 10 cm of new snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Be careful as you transition into wind-affected terrain.
  • Wind slabs are isolated, but may remain reactive.

Avalanche Problems

Loose Wet

Small wet loose avalanches will be likely on steep sun-exposed slopes. Avoid overhead hazard from steep sunny faces during the warmest parts of the day.

Aspects: South East, South, South West, West.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Wind Slabs

Recent snow and wind have created fresh wind slabs. Use caution as you transfer into wind-affected terrain, as these slabs can still be triggered by riders.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2