Dead man creek Sled Trigger Avalanche

Location Name: 
Dead man creek drainage
Region: 
BWRA
Date and time of avalanche (best estimate if unknown): 
Sun, 03/24/2019 - 13:00
Location Map: 


Red Flags: 
Recent avalanche activity

Observation made by: Professional Observer
Avalanche Observations
Avalanche Type: 
Dry
Loose/Point-Release
Slope: 
36degrees
Trigger type: 
Snowmobiler
Crown Height: 
Less than 1 ft
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Avalanche Width: 
40ft.
Terrain: 
Above Treeline
Elevation: 
9 000ft.
Bed Surface: 
Old Snow
Avalanche Length: 
300ft.
Number of similar avalanches: 
1
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0
Did the avalanche hit a building, vehicle, or structure?: 
No
More detailed information about the avalanche: 

NE facing slope down in the drainage. We saw the sled triggerd avalanche among many other highmarks with no reaction.

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

Clear blue skies, temps around 40F, calm SW winds 5-10 mph.