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Archived

Avalanche Forecast

Apr 10th, 2024–Apr 11th, 2024
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
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

Regions: Brandywine, Garibaldi, Homathko, Powell River, Sea To Sky, Sky Pilot, Tantalus.

Avalanche danger will increase throughout the day as new snow accumulates.

Watch for changing conditions and dial back your terrain choices if you see signs of instability.

Confidence

High

Avalanche Summary

Earlier in the week, numerous natural and explosive-triggered wind slab avalanches up to size 2 were reported, primarily on northerly aspects in the alpine.

Looking forward to Thursday, riders should watch for fresh storm slabs forming throughout the day as new snow accumulates.

Snowpack Summary

15 to 30 cm of new snow will accumulate by the end of the day on Thursday. This overlies up to 30 cm of recent snowfall.

The recent snow overlies a crust on all slopes except true north facing terrain at upper elevations where the previous snow remained dry.

Many areas below treeline are either snow-free or have very thin snow coverage. Expect difficult travel at lower elevations.

Weather Summary

Wednesday Night

Cloudy. 15 to 30 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Thursday

Cloudy with 15 to 30 cm of new snow accumulation above the rain-snow line. 20 to 50 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1000 m.

Friday

A mix of sun and cloud. 5 to 15 km/h south ridgetop wind. Treeline temperature +1 °C. Freezing level 2000 m.

Saturday

Partly cloudy. 5 to 20 km/h northwest ridgetop wind. Treeline temperature +2 C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • As the storm slab problem gets trickier, the easy solution is to choose more conservative terrain.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Closely monitor how the new snow is bonding to the crust.

Avalanche Problems

Storm Slabs

Up to 30 cm of new snow accompanied by southwest winds will build fresh storm slabs throughout the day. Deeper, more reactive slabs may form in north and east facing lee terrain features.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2