Valanga

Anderson Ridge

Andy AndersonCentral Sierra Nevada
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Quick report

The sun and warm weather made it feel like spring and had us shedding layers at the start of our tour. Snow conditions also felt spring-like, with soft, wet snow (almost corn) on a supportable base on sunny slopes. While these sunny slopes still have less snow than the shaded northerly facing aspects, they still had more than enough snow to travel on as long as we carefully avoided the rocks, bushes, and other things sticking out of the snow. When we moved to E aspects, we found a thin sun crust on the surface that broke apart under our skis. The more northerly aspects held a few inches of soft, cold snow on the surface, with surface hoar in a few sheltered spots. More snow exists on more aspects in this area and many of the southerly aspects even held enough snow to travel on. 

Weather

Air Temp
47 °F
Cloud Cover
clear
Snow Avail For Transport
small smounts

Clear skies, warm temperatures, and calm winds continue to prevail across the region.

Snowpack

We probed into the snowpack in several places on various aspects and at different elevations. We could feel softer snow at the base of the snowpack on a few of the upper-elevation north-facing slopes, but most spots held a well-consolidated snowpack almost to the ground. 

Avalanche

Size
D2 R4
Aspect
NE
Trigger
N
Elevation
7850 ft

We came across an old avalanche on a NE-E facing slope at 7800. Based on how much snow was on the bed surface and how eroded the crown and debris blocks were, it likely occurred on 11/23. We dug a snowpit in the crown, and it looks like the avalanche failed on a graupel layer.