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Archived

Avalanche Forecast

Mar 11th, 2025–Mar 12th, 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
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Assess bond of new snow to underlying surfaces. Take extra caution when transitioning into wind affected terrain.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported, but snowpack tests done by our field team east of Elkford suggest that the persistent weak layer may still be triggerable by humans.

Avalanches on buried weak layers may be difficult to trigger, but if one is triggered, it is likely to be large and destructive.

Snowpack Summary

Up to 10 cm of new snow is being redistributed by strong southwest winds. Below 1900 m, and on solar aspects, this sits on a surface crust from recent sun and warming.

At treeline and above, the new snow falls on 5 to 10 cm of snow that has been redistributed by predominantly southwest wind.

The main feature of the region's overall shallow snowpack is a persistent weak layer of surface hoar or facets from late January now buried 40 to 80 cm deep.

Weather Summary

Tuesday Night

Mainly cloudy, with up to 5 cm of new snow. 20 to 45 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Wednesday

Mainly cloudy, with up to 8 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Thursday

Mainly cloudy, with up to 15 cm of snow. 20 to 60 km/h southwest ridgetop wind. Treeline temperature 0 °C.

Friday

Mainly cloudy, with up to 3 cm of snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Be mindful that deep instabilities are still present and have produced recent large avalanches.

Avalanche Problems

Wind Slabs

New snow arrives with moderate to strong southwest winds. Old wind slabs exist beneath the new snow

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 1.5

Persistent Slabs

The persistent weak layer has recently produced several large to very large avalanches. It remains a concern where there is no thick, supportive crust near the surface.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 3