Avalanche Forecast
Avalanche Bulletin - Little Yoho
Summer conditions are here, but keep the deep persistent weak layer in the back of your mind if you are considering venturing into steep alpine snowy terrain!
Avalanche Problem 1: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Watch for clues, like sluffing off of cliffs, that the snowpack is warming up.
- Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.
Avalanche Problem 2: Deep Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
The deep persistent layer has still been sporadically reactive on hot days in high alpine terrain. Think twice about committing to the big faces unless you have a very good freeze.
Travel and Terrain Advice
- Travel early before the heat of the day melts surface crusts, and avoid big slopes in the afternoon.
Avalanche Summary
In general, avalanche hazard will be greatest during hot sunny days or warm rain. This has the potential to trigger smaller loose wet avalanches and larger wet slab avalanches on the basal weak layer. For current avalanche activity and observations, check out the Mountain Conditions Report
Snowpack Summary
The deep persistent weakness still exists and has been sporadically active on hot days in high alpine terrain. This will be the big thing to consider when deciding whether to get on the bigger snow and ice routes.
Weather Forecast
Some helpful weather links:
Remote weather stations in Banff, Yoho & Kootenay - Real time, raw, actual weather data.
Avalanche Canada Mountain Weather Forecast - Good for getting an overview of the major weather systems.
SpotWx - Good for a localized forecast
Environment Canada Yoho forecast - Simplified valley bottom forecast for Lake Louise area.
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For the most part, the snowpack has settled into a summer-like state, but loose wet avalanches are still possible on hot days in steep alpine terrain.