Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Apr 6th, 2021–Apr 7th, 2021
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
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
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

Regions: South Coast.

Stormy conditions are expected to build fresh and reactive storm slabs throughout the day. Choose conservative terrain and watch for signs of instability such as whumpfing, cracking and recent avalanches.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

Tuesday night - Increasing cloud with a few flurries / moderate to strong southwest wind / alpine low temperature near -2 / freezing level 900 m

Wednesday - Snow, 20-30 cm / strong southwest wind / alpine high temperature near 0 / freezing level 1000 m

Thursday - A mix of sun and cloud / light northwest wind / alpine high temperature near -4 / freezing level 1000 m 

Friday - Snow, 15-20 cm / strong southwest wind / alpine high temperature near -5 / freezing level 700 m 

Avalanche Summary

High snowfall amounts with strong southwest winds on Wednesday are expected to form fresh slabs that are likely to become increasingly reactive throughout the day as the snow piles up.

We haven't received many observations for the South Coast region in the past few days. If you get out, please consider sharing your observations to the Mountain Information Network to help us know what conditions are like.

Snowpack Summary

20-30 cm of new snow is expected to accumulate above 1000 m on Wednesday. Rain is expected below 1000 m. Strong southwest wind is expected to form fresh and reactive storm slabs throughout the day.

The new snow will add to the 15 to 25 cm of recent fresh snow in the central/north of the region, and 5 cm along the North Shore. On sun-exposed aspects and below about 1400 m, the new snow sits on a crust.

Cornices are large and looming along ridgelines. Their release is unpredictable, requiring a large berth if you're travelling above or below them.

Terrain and Travel

  • Watch for changing conditions today, storm slabs may become increasingly reactive.
  • Choose conservative terrain and watch for clues of instability.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Storm Slabs

Fresh storm slabs are expected to build throughout the day and are likely to become increasingly reactive as the day goes on, especially in wind loaded areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Cornices are large and looming along many ridgelines and have likely grown with the recent snow and wind. 

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3