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Archived

Avalanche Forecast

Apr 15th, 2023–Apr 16th, 2023
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
4: High
The avalanche danger rating below treeline will be high
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
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: North Shore, Powell River, Sasquatch, South Coast, Stave, Tetrahedron.

Avoid avalanche terrain. Rapid loading from snowfall and wind is likely to induce a natural avalanche cycle.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported in the past couple days but observations are limited this time of year.

We expect that a natural avalanche cycle will occur on Sunday.

If you are venturing into the backcountry please consider filling out a Mountain Information Network report.

Snowpack Summary

Ongoing snowfall accompanied by southerly wind will continue to add to the storm slab problem with the largest being found on west through east aspects. This storm snow will overlie a crust on all terrain except north facing above 1000 m.

Multiple crusts exist in the upper snowpack. Below this is a well settled snowpack.

Thanks for the details! MIN

Weather Summary

Saturday Night

Stormy with 20 to 30 cm of new snow expected. Moderate to strong southeast winds and a low of -2°C at 1200 m.

Sunday

Stormy with 20 to 40 cm of new snow expected. Strong southeast winds and Freezing levels around 1300 m. Snowline falling to 600 m.

Monday

Mostly cloudy with  up to 20 cm of new snow possible. Moderate southeast winds and a high of -3°C at 1200 m.

Tuesday

Stormy with up to 20 cm possible. Light to moderate southerly winds and a high of -3°C at 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of heavy snowfall.
  • Watch for fresh storm slabs building throughout the day.
  • Be especially cautious as you transition into wind affected terrain.
  • Avoid exposure to slopes that have cornices overhead.

Avalanche Problems

Storm Slabs

Ongoing snowfall accompanied by southerly winds will add to the storm slab problem throughout the day. The largest and most reactive slabs will be found on lee and cross loaded features on west through east aspects. Strong winds mean that loading could occur further down slope than expected.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1.5 - 2.5

Cornices

Ongoing snowfall and southerly wind will add to cornices making them weaker and more likely to fail.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3