Avalanche Forecast
Avalanche Bulletin - Waterton Lakes National Park
Avoid all avalanche terrain as avalanches can run to valley bottom.
Avalanche Problem 1: Deep Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.
- Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.
Avalanche Problem 2: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Watch for slab formation with warming temperatures into the weekend. The new snow may also be sitting on old wind slabs
Travel and Terrain Advice
- If triggered the storm slabs may step down to deeper layers resulting in large avalanches.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Avalanche Summary
There have been large avalanches to the West of Waterton, in the Lizard Range, in the last week.
Snowpack Summary
There is a weak facet layer deep in the snowpack that has been producing large avalanches to the West of Waterton. We are concerned that the new snow on Thursday might cause this weak layer to fail producing large avalanches.
Weather Forecast
Winter Storm Warning in effect for Waterton on Thursday. Forecasts models regarding precipitation amounts range from 20cm-50cm. This snow is accompanied with cold temperatures (-15C) and light NE winds. Snow will taper off into Friday, temperatures will warm-up and skies will clear into the weekend.
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The weak facet layer in the snowpack could wake-up with the new snow forecasted on Thursday.