Avalanche Forecast
Issued: May 7th, 2024 3:45PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wet Slabs, Cornices and Deep Persistent Slabs.
JMackenzie,
Avalanche Canada
We are entering a massive warm up. Danger ratings indicate the highest avalanche danger for the day.
Time to avoid all avalanche terrain and any exposure to avalanche run outs.
Scramblers be aware of what's overhead and stay out of gully's.
Summary
Confidence
High
Avalanche Summary
Loose wet avalanches up to size 2.0 have been observed in the last 24hrs. More significant avalanche activity is expected over the next few days.
Snowpack Summary
With above freezing temperatures and high freezing levels the next few days, finding any quality skiing will be difficult. Overnight freezes will be minimal and even northerly slopes will not maintain much, if any, dry snow. This would be a great time to avoid any exposure to avalanche terrain as this hot weather passes through.
Weather Summary
We are entering the big warm up of the spring. Freezing levels are going to rapidly rise to 3900m by Friday, and stay there through the weekend. This is the warm up we have been waiting for. Valley temperatures are forecasted to be in the +20 range.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be alert to conditions that change throughout the day.
- Be alert to conditions that change with aspect and elevation.
- Keep in mind that wet avalanches can be destructive due to their high density.
- A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
- If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.
- Be aware that wet activity at low elevations is a classic situation for step-down failures in deeply buried persistent weak layers.
- Cornices become weak with daytime heating.
Problems
Wet Slabs
As the heat comes through the region, overnight freezes will be minimal to non-existent. The snowpack will be in a full time state of melt and weakening
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Cornices
If there were ever a time to avoid cornices, this would be it! With the drastic change in temperatures, Cornices will destabilize.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Deep Persistent Slabs
Concern remains for basal instabilities on high north areas. Be cautious in thin areas. This is low probability high consequence.
Aspects: North, North East, East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: May 12th, 2024 3:00PM
