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Avalanche Forecast

Dec 23rd, 2024–Dec 24th, 2024
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
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
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

Regions: East Island, North Island, South Island, Vancouver Island, West Island.

Carefully assess conditions

Storm slabs will be largest and most reactive where precipitation has predominantly fallen as snow

There is uncertainty in the freezing level during the storm

Confidence

Low

Avalanche Summary

No new avalanches have been reported in several days.

Observations have been limited. Please consider sharing your observations through the Mountain Information Network.

Snowpack Summary

By mid day on the 24th  up to 50 mm of precipitation may have fallen. In the alpine much of this precipitation will fall as snow and be accompanied by strong southerly winds. At treeline precipitation will initially fall as rain and switch to snow in the early morning. Below treeline most of this precipitation will likely fall as rain further melting the snowpack.

Snowpack depths at treeline vary from 200 to 250 cm.

Weather Summary

Monday Night

Cloudy with 15 to 30 mm of mixed precipitation. 40 to 70 km/h southeast ridgetop wind. Freezing level rising to 1700 m.

Tuesday

Cloudy with 10 to 20 mm of mixed precipitation. 30 to 60 km/h southwest ridgetop wind. Freezing level around 1200 m.

Wednesday

Cloudy with 10 to 100 mm of mixed precipitation  with the greatest values on the west side of the island. 40 to 70 km/h southeast ridgetop wind. Freezing level around 1400 m.

Thursday

Mostly cloudy with 10 to 50 mm of mixed precipitation with the greatest values on the west of the island. 20 to 40 km/h west ridgetop wind. Freezing level rising to 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Avalanche Problems

Storm Slabs

New storm and wind slabs will likely have formed overnight.

Where precipitation has fallen as rain wet loose avalanches will be possible.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1.5 - 2.5