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Archived

Avalanche Forecast

Mar 10th, 2025–Mar 11th, 2025
Alpine
4: High
The avalanche danger rating in the alpine will be high
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
4: High
The avalanche danger rating in the alpine will be high
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Enjoy the fresh snow in simple terrain with no overheard exposure. Natural avalanche cycle is ongoing.

Confidence

Moderate

Avalanche Summary

Bad visibility throughout the day. Several rumbles were heard from the steep headwall in the back of the basin today. On the drive home, there was visible debris below large features and a fresh crown on the SE aspect of tent ridge which ran in to the valley below where most skiers descend from tryst lake basin. Loose dry and sluffs were observed on any feature steep enough.

Snowpack Summary

The storm produced. Field teams in the black prince area today found 70CM of new snow sitting overtop of a sun crust in the tree triangle. This amount seems highly drainage dependant as the weather stations in the burstall pass area recorded 30cm. This new snow now overlies the Jan 30th interface. Below the Jan 30th there is a mostly faceted snowpack to ground with a standout layer about 30cm off the ground of large depth hoar crystals.

Traveling off of established skin tracks at lower elevations is very challenging due to the weak nature of the snowpack. Once higher this becomes easier.

Weather Summary

Tuesday:

Mostly cloudy with sunny periods, isolated flurries. Day time high of -9 with 50km West winds

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Choose simple, low-angle terrain without steep convex rolls.
  • Dial back your terrain choices if you are seeing more than 25 cm of new snow.
  • Be alert to changing conditions throughout the day.
  • Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Cautiously approach steep slopes that are open or sparsely treed.

Avalanche Problems

Persistent Slabs

This sits upon weak faceted crystals, sun crust or a dense layer that are perfect for slab avalanches. This layer will not react well to new loading, or even re-loading from wind.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely - Certain

Expected Size: 1.5 - 3

Wind Slabs

Wind slabs have been building with recent wind. Expect heavy wind loading in lee features.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely - Certain

Expected Size: 1.5 - 2.5

Loose Dry

Concern for steep extreme terrain

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely - Certain

Expected Size: 1 - 2