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Archived

Avalanche Forecast

Apr 23rd, 2025–Apr 24th, 2025
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
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
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: Dogtooth, East Purcell, Purcells, West Purcell.

Riders may still trigger wind slabs in the alpine.

Periods of low danger can be a good time to check out larger objectives.

Confidence

Moderate

Avalanche Summary

On Tuesday, there were several small natural dry loose avalanches when the recent snow saw the sun.

On Monday, several small skier-triggered wind slabs were reported on lee aspects in the alpine.

NOTE: Observations are currently very limited.

Snowpack Summary

Up to 20 cm of recent snow may be found at upper elevations. This snow overlies a thick crust everywhere except northerly aspects at in the alpine. Recent westerly wind may have formed small wind slabs on lee aspects in the alpine.

While weak layers lower in the snowpack have been a concern throughout the season, the current lack of avalanche activity and benign weather suggest they are not a concern at this time. They could become problematic again this spring when temperature rises significantly.

Weather Summary

Wednesday Night

Partly cloudy. 10 to 20 km/h north ridgetop wind. Treeline temperature -4 °C.

Thursday

Mix of sun and clouds. 20 to 30 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing level 2500 m.

Friday

Sunny. 5 to 10 km/h southeast ridgetop wind. Treeline temperature 5 °C. Freezing level 2700 m.

Saturday

Sunny. 5 to 10 km/h north ridgetop wind. Treeline temperature 5 °C. Freezing level 2900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate big and steep terrain features before committing to them.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Make observations and continually assess conditions as you travel.

Avalanche Problems

Wind Slabs

Small wind slabs may linger below alpine ridge tops.

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

Elevations: Alpine.

Likelihood: Unlikely

Expected Size: 1 - 1.5