Observation: Public

Observation Details

Signs of Unstable Snow

Observations

The most notable observation is widespread poor snowpack structure from the combined rain events and high pressure. Four finger to fist strength facets exist below the January crusts (bar and glove in photo) and now have 60-90cm of snow since last Wednesday around 5000'. Pit results showed no propagation on NE, 5200' and cornice drops at 5600' on east only resulted in cornice chunks going for a sled ride.

Changing weather conditions from AM to PM when temps increased (estimated -4 to -1 at 5000'), winds picked up BTL and precip rates increased to S2+ NTL. Sky obscured all day and westerly winds strong enough for high transport all day.

With additional wind and snow, and rising temps tonight into the 7th, the PWLs will get a test, especially above the BTL/NTL slopes we topped out on at 5600'.