Avalanche Forecast
Avalanche Bulletin - Little Yoho
Start early to take advantage of good travel conditions and cool temperatures on Tuesday morning. We expect the hazard will rise later in the day as things warm up and the precipitation arrives.
Avalanche Problem 1: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be cautious with convexities and steep slopes on solar aspects.
Avalanche Problem 2: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Recent new snow and moderate West winds have created wind slabs in immediate lees areas of the alpine that can be triggered by skiers in some locations. This problem may increase later in the day on Tuesday as more snow arrives.
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Avalanche Summary
Some loose dry sluffing in the alpine due to strong wind gusts on Monday, as well as thin touchy wind slabs in immediate lee areas at local ski hills. Explosive control at Sunshine produced one size 2 wind slab. On Sunday a size 2 wind slab was observed on a NE aspect at 2600m near Lake Louise and some loose wet sluffing out of steep solar terrain.
Snowpack Summary
Moderate west winds over the past 24 hrs have created wind effect in open areas, and wind slabs in lee areas in the alpine, On solar aspects the March 15 sun crust is down 25-50 cm and has been sensitive to skier triggering over the last week. A temperature crust is present on all aspects below 2000m and higher on solar aspects.
Weather Forecast
Tuesday will start out as a mix of sun and cloud with below freezing temperatures overnight helping with travel conditions. Some precipitation is expected to arrive Tuesday afternoon with up to 5-10 cm accompanied by strong West winds and freezing levels up to 2300m. Cooler temps and slightly drier conditions with some cloud is expected Wednesday.
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Dig down to find and test the bond of the surface snow with the Mar 15 crust down 25-50 cm on steep solar aspects, bearing in mind that the bond can vary significantly with subtle changes in slope aspect, steepness or warming temperatures.