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Archived

Avalanche Forecast

Apr 16th, 2025–Apr 17th, 2025
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Babine, Hudson Bay, Microwave-Sinclair, North Bulkley, South Bulkley, Telkwa.

Dangerous avalanche conditions are expected.

Large persistent slabs may occur with warm temperatures.

Confidence

Low

Avalanche Summary

A large avalanche was reported in the Evelyn area on a northeast aspect on Saturday. Check out the details in this MIN.

Snowpack tests continue to show reactivity on buried weak layers, but it's getting hard to pinpoint where they are a problem.

Read a great report from the field team here.

Snowpack Summary

10 to 15 cm of recent snow covers variably wind-affected snow in open terrain at upper elevations. A crust is found up to 2000 m and higher on solar slopes.

Below treeline, depending on overnight refreeze, a surface crust is likely over a wet and unconsolidated snowpack.

Two layers currently exist in the mid-snowpack.

  • A layer of surface hoar that formed in early March can be found at a depth of 40 to 70 cm.

  • A layer of facets, surface hoar, and/or a crust from mid-February is buried 60 to 120 cm deep.

Weather Summary

Wednesday Night

Clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Thursday

Sunny. 20 to 30 km/h northwest ridgetop wind. Treeline temperature +5 °C. Freezing level rising to 3200 m.

Friday

Mostly cloudy with up to 5 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2800 m in the morning, falling to 1500 m by the end of day.

Saturday

Mix of sun and cloud with 1 to 2 cm of snow. 15 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1300 m.

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.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.

Avalanche Problems

Persistent Slabs

Triggering may still be possible where there is no crust on high alpine slopes. Consider if the risk is worth the reward, it's difficult to predict where and when this problem will be reactive.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3

Loose Wet

Small wet loose avalanches may occur if its calm and sunny. Avoid overhead avalanche terrain.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Cornices

Cornices may fail during warm temperatures. Potentially triggering a slab on the slope below.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2