Avalanche Forecast
Avalanche Bulletin - Little Yoho
This is our first big warmup - the hazard will be Low in the morning and rise to Considerable on solar aspects. Northern aspects will stay at a lower hazard. Cornices overhead may start to fail, and could potentially trigger deeper layers.
Avalanche Problem 1: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Avalanche Problem 2: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Increasing West winds have moved new snow around in the alpine forming small slabs in lee areas. Watch for these in the high alpine, especially in steep unsupported terrain where skier triggering may be possible.
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Avalanche Summary
No new avalanches reported in Little Yoho, but suspect there may have been some loose wet avalanches at lower elevations from steep solar rocky terrain with prolonged sun affect.
Snowpack Summary
Very little wind effect overall except in the high alpine. Sun crust on steep solar aspects is forming. Generally, 10-20 cm of snow sits over a firm mid-pack. The Jan surface hoar layers down 100-150 cm are inactive in tests. In shallow areas the deeper facet layers are currently dormant, but could become active with the warm days ahead.
Weather Forecast
Our first major warming trend will occur over the next several days. Expect sunny skies and temperatures to get incrementally warmer with each day, peaking on Tuesday/Wednesday. For Saturday, expect treeline highs to be around -3C, winds light from the SW and freezing levels to be around 1600 m.
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Climbers avoid terrain exposed to the sun, we expect solar related avalanche activity over the next few days with prolonged sun affect and warmer day time temperatures. Loose wet avalanches can be expected to initiate from overhead rocks and cliffs.