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Observation type
Snowpack

Observer
Kevin Koenig

Keep me anonymous if published
no

Location (general area)
Alto Diablo

Latitude

Longitude

Date (yyyymmdd)
03/19/23

Time
11:00

Road conditions to area
Clear

Temperature
15

Sky
Obscured (fog or base layer prevents view of sky)

Wind speed
Extreme (>38mph gale force or +)

Wind direction
SE

Wind direction in degrees

Slope aspect
North

Aspect in degrees

Slope angle
27

Elevation
10200

Snow depth

Boot/ Ski penetration
Ankle

Precipitation
Medium 

Activity, recent avalanches
No

Brief description

Whumphing noises, shooting cracks. collapsing
no

Rapid warming
no

Obvious avalanche path
no

Comment
Toured up the North Face of Alto Diablo Sunday morning 3/19/23 to the false peak at 10,200’. 
There was roughly 2-3” of new snow above 9500’
There was a rain/snow mix below 9500 down to about 7000’. 
A VERY strong SE Wind was depositing snow on the north west aspects. This was surprising as the forecast had been saying the wind was to be from the west.
North east face was wind scoured. North and North West faces had accumulated deposited snow 6”-1’ deep over a harder layer that seemed to have been rained on or experienced heavy freeze/thaw.
Above 9500’ this harder layer disappears and Boot penetration varies from ankle deep to below the knee.
We did not dig a pit and opted for a low angle retreat out of the wind. We did not see any red flags but remained on low angle and did not venture on western faces which I’d assume were pretty suspect. 

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Yes I would like this observation Published

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