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Archived

Avalanche Forecast

Mar 16th, 2024–Mar 17th, 2024
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Coquihalla, Manning, Skagit.

⚠️ Continue to avoid avalanche terrain and exposure to overhead hazard⚠️

Natural avalanches are expected as heat continues to weaken the snowpack.

Confidence

High

Avalanche Summary

Wet avalanche activity was observed on Thursday, up to size 2.5. Avalanches were only observed in the recent storm snow and not reported to have stepped down to the buried weak layers.

Check out this MIN report from Zupjok on Thursday.

Continued activity is expected - with possible persistent slabs, widespread loose wet avalanches, and cornice failures as warming persists.

Weather Summary

Saturday Night

Clear skies. 20km/h southerly ridgetop wind. Freezing level remains above 3000 m.

Sunday

Sunny. 20 km/h southerly ridgetop wind. Treeline temperature +7 °C with freezing level at 3300 m.

Monday

Sunny. 20 km/h southerly ridgetop wind. Treeline temperature +7 °C with freezing levels remaining above 3000 m.

Tuesday

Sunny. 20-40 km/h southwest ridgetop wind. Treeline temperature +6 °C with freezing levels falling to 2500 m over the day.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain as temperatures increase.
  • Cornice failure may trigger large avalanches.
  • Keep in mind that wet avalanches can be destructive due to their high density.
  • If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.

Avalanche Problems

Persistent Slabs

We have had no reports of persistent slab activity since last weekend. Concern still exists for the possibility of natural avalanches on this layer with the warm temperatures and sunshine. If triggered, large avalanches are expected

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3.5

Loose Wet

Continued wet loose/slab activity is expected within the surface snow as warming continues and the snowpack has little chance to refreeze overnight. Greatest concern is for sun affected slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2.5