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Archived

Avalanche Forecast

Mar 15th, 2025–Mar 16th, 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
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: Coquihalla, Manning.

With continued snowfalls, human-triggered slab avalanches will remain a concern, especially on wind-loaded features.

Confidence

Moderate

Avalanche Summary

On Friday, a cornice fall triggered a small wind slab avalanche (size 1.5) on a cross-loaded slope near Thar Peak. Several loose wet avalanches were observed on steep southerly slopes in the Coquihalla.

On Thursday, a skier triggered a size 1 avalanche on a northeast aspect at treeline in the Coquihalla. Read full MIN here.

Snowpack Summary

Over the weekend, 15 to 25 cm of new snow will add to 65 cm of recent storm snow. This sits above a crust on all aspects except on high, north-facing alpine terrain. Moderate to strong southwest winds have redistributed storm snow into deeper pockets on lee slopes at ridgeline, forming wind slabs.

A layer of facets and surface hoar that formed in February has been found 90 to 150 cm down, and a layer of facets and surface hoar from late January can be found down to 130 to 190 cm. No recent notable test results have been seen on these layers.

Weather Summary

Saturday Night

Cloudy with 5 to 10 cm of new snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -5 C. Freezing level 1000 m.

Sunday

Cloudy with 3 to 5 cm of new snow. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.

Monday

Cloudy with 10 to 15 cm of new snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level rising to 1200 m.

Tuesday

Cloudy with up to 5 cm of new snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level rising to 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Approach lee and cross-loaded slopes with caution.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Avalanche Problems

Storm Slabs

Rider-triggered storm slabs remain possible as new snow and wind form fresh, reactive slabs, particularly on wind-loaded lee slopes where deeper snow deposits are found.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2