Avalanche Forecast
Avalanche Bulletin - Little Yoho
The danger is Low/Low/Low in the morning, but rising with daytime warming and sun. Start and finish early and avoid exposure to solar aspects and cornices once the sun is out.
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?
Alpine West winds formed windslabs last week. These are bonding, but in steep unsupported terrain, skier triggering is still possible.
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Avalanche Summary
Evidence of a loose wet avalanche cycle was isolated to steep solar gullies. Also observed were a few size 2 slabs on steep solar convex rolls.
Snowpack Summary
Facetted, wind effected snow exists in the alpine. A sun crust has formed on solar aspects at treeline and below. The deeper facet layers down 80-150 cm remain weak and are currently dormant, but could become active with the warm days ahead.
Weather Forecast
Expect the daily diurnal temperature variation to continue, each day a little bit warmer than the last. Freezing levels will rise to ~2500m later in the week, and dropping to valley bottom overnight. Clear skies will also provide a condition for intense solar radiation. Wind will remain light from the SW.
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Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.