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Archived

Avalanche Forecast

Mar 22nd, 2025–Mar 23rd, 2025
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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

Regions: Badshot-Battle, Central Selkirk, Esplanade, Goat, Gold, Jordan, North Columbia, North Selkirk, South Columbia.

Avoid complex and wind-loaded terrain.

Storm slabs will be building throughout Sunday.

Confidence

Moderate

Avalanche Summary

Storm slab activity in the size 1-2 range has been consistently reported at upper elevations across the region. A few larger persistent slabs, up to size 3, have also been observed, these were largely triggered by cornice failures.

With more snow and wind in the forecast, we expect this trend to continue into Sunday.

Snowpack Summary

Up to 20 cm of new snow is expected to fall overnight and through Sunday and will build widespread new storm slabs. Due to forecast winds, these slabs are expected to be thickest and most reactive on wind-loaded north and east-facing slopes. Snow may be moist or wet at lower elevations.

Three persistent weak layers consisting of surface hoar, facets, or a crust may be found in the upper to mid-snowpack:

  • Early March layer down 60 - 100 cm. This is the primary persistent layer of concern.

  • Mid-Feb layer down 90 - 170 cm.

  • Late-Jan layer down 100 - 200 cm.

The lingering concern for the Feb and Jan weak layers is in shallow or rocky areas, otherwise, these are unlikely to trigger without a significant load.

Weather Summary

Saturday Night

Cloudy with 0 to 5 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Sunday

Cloudy with 5 to 15 cm of snow and up to 20 cm coming Sunday night. 25 to 35 km/h south ridgetop winds. Treeline temperature -2 °C. Freezing level rising to 1500 m.

Monday

Cloudy with 10 to 20 cm of snow / potential rain below 1700m. 20 to 30 km/h southwest ridgetop winds. Treeline temperature +1 °C. Freezing level rising to 2000 m.

Tuesday

Cloudy with 0 to 5 cm of snow / light rain. 15 to 30 km/h south ridgetop winds. Treeline temperature +3 °C. Freezing level rising to 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Avoid freshly wind-loaded terrain features.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

Avalanche Problems

Storm Slabs

Storm slabs will be building through Sunday and expected to be most reactive on north through east facing wind-loaded slopes at upper elevations.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Persistent Slabs

Persistent weak layers of surface hoar/facets or crust remain a concern in the upper 60 - 100 cm. Storm slab avalanches could step down to these layers, forming very large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3.5