Avalanche danger ratings reflect the highest danger level expected over the course of the day. Rising temperatures and solar heating will increase avalanche danger. Start early and finish early to take advantage of overnight freezing.
30-50 cm of recent storm snow overlies a weak facetted layer in sheltered locations. This has resulted in wind effected slabs in alpine areas and less slab effect in more sheltered areas. Avoid avalanche terrain for another day still.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Wednesday looks like a beautiful day, with mostly clear skies and the temperature dropping overnight to reach -20 in the morning. Winds should be relatively light out of the NW. On Thursday, overcast skies and light snow returns with up to 5 cm per day for many days in a row. Looks like a long stretch of light snow and clouds coming our way.
The recent storm deposited between 30-40 cm of new snow along with very strong winds and warming temperatures to create widespread storm slabs failing on the Fe 19 facets layer underlying. Expect this snowpack to remain very sensitive to human triggering for the next few days as the snowpack slowly begins settle.
A widespread avalanche cycle is occurring this week, with avalanche control producing large avalanches from almost every target. We have buried the SSV road 200 cm deep x 50 long, hit the creek on Eagle 3, almost hit the road on Whymper South and observed big avalanches in Bosworth. Some natural activity but most avalanches require a trigger.