Leavitt Field Day

Location Name: 
Leavitt Drainage
Region: 
BWRA
Date and time of observation: 
Thu, 01/10/2019 - 12:30
Location Map: 


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain

Observation made by: Public
Snowpit Observations
More detailed information about the snowpack: 

Spent the day around Leavitt Lake watching high angle slope testing and looking for any lingering persistent slab instability.  I aimed for terrain features that had a thin snowpack prior to last week's storm cycle.  

SnowPilot Graph: Observed repeated ECT propagation on an E aspect at 8900' in an area with a thin (>40cm) snowpack capped with 80cm of settled snow from our recent cycle.  

Photos 1: Hardness profile with temp crusts exposed.  

Photo 2: Location of snow pit (N of Deadman Creek)

Photo 3: Snowpit E of Leavitt Cirque: W Aspect @9800', HS: 158, 96 hr HNS: 76cm, Slope Angle: 28 degrees - ECTP23 RP in this at the new snow/old snow interface but could not repeat with multiple attempts.  Otherwise observed various ECTN results within the 96 hr HNS only.  

Photo 4: Snowpit: N Aspect @ 9600', HS: 150cm, 96 hr HNS: 100-120cm - Thin previous snowpack in this area but not noticeably weak/faceted.  Various ECTN results in the new snow only.  We buried a 320cm probe about 10 ft. down slope from our snowpit on this slope.  

Photo 5: Wind slab/cornice formation in protected areas below treeline from Sat-Mon extreme S/SW winds.  

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
No
Air temperature: 
Above Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
None
More detailed information about the weather: 

Beautiful day with calm winds and warm temps.  Wet activity was limited to one or two pinwheels on solar aspects below rock features.