Banff Yoho & Kootenay National Park Avalanche Forecast

Issued: Apr 28th, 2021 4:00PM

Wed Apr 28th Current Conditions
Alpine Below Threshold Treeline Below Threshold Below Treeline Below Threshold
Thu Apr 29th 2 Day Outlook
Alpine Below Threshold Treeline Below Threshold Below Treeline Below Threshold
Fri Apr 30th 3 Day Outlook
Alpine Below Threshold Treeline Below Threshold Below Treeline Below Threshold

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold. Known problems include Loose Wet and Wet Slabs.

Minimal freeze overnight at tree line and below as we approach the 'All Melt, No Freeze' Spring conditions scenario, as the freezing level rise to 3000m on Thursday.

Click the "More Spring Conditions details" link for more info.

Summary

Weather Forecast

Thursday is forecasted to be mainly cloudy with a chance of snow flurries or rain. The freezing level will remain at 1800m Wednesday night and will rise up to 3000m on Thursday. Wind will be 20-60km/hr from the South West. For more details, see the Mountain Weather Forecast.

Snowpack Summary

Poor overnight crust recovery, weak crusts on all aspects up to 2000m. Crusts at higher elevations will gradually break down with daytime warming. 10-20cm of settled dry snow in high Northerly terrain. Isolated pockets of wind slab may exist in the alpine.

Avalanche Summary

No new avalanche activity observed or reported for the past few days.

Confidence

Problems

Loose Wet

An icon showing Loose Wet

Likelihood

Likely

Expected Size

1 - 2

With a poor overnight crust recovery and a freezing level up to 3000m on Thursday, expect wet loose activity on all aspects but high Northerly terrain.

  • Use caution on solar slopes if the snow is moist or wet.
  • Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.

Aspects:

South East, South, South West, West.

Elevations:

All elevations.

Wet Slabs

An icon showing Wet Slabs

Likelihood

Possible

Expected Size

2 - 3.5

As the snowpack warms there is potentially for large and deep avalanches. Plan to be off large terrain features before it gets warm, as uncertainty exists about this problem.

  • If triggered loose wet sloughs may step down to deeper layers resulting in larger avalanches.
  • Use extra caution on solar slopes if the snow is moist or wet.

Aspects:

South East, South, South West, West.

Elevations:

All elevations.

Valid until: Apr 29th, 2021 4:00PM

Forecast Trend

The latest forecast danger ratings, broken down to elevation. See how an elevation is trending.