Afton Wyoming Avalanche

Location Name: 
Afton Wyoming
Date and time of avalanche (best estimate if unknown): 
Thu, 01/31/2019 - 15:11
Location Map: 
United States
42° 38' 16.8" N, 110° 46' 8.3028" W
US


Red Flags: 

Observation made by: Public
Avalanche Observations
Avalanche Type: 
Slab
Slope: 
35degrees
Trigger type: 
Snowmobiler
Crown Height: 
3 ft
Aspect: 
South
Weak Layer: 
Old Snow
Avalanche Width: 
200ft.
Terrain: 
Above Treeline
Elevation: 
9 300ft.
Bed Surface: 
Old Snow
Avalanche Length: 
300ft.
Number of people caught: 
2
Number of partial burials: 
1
Number of full burials: 
0
More detailed information about the avalanche: 

Observer Notes:Two riders were riding side hill on the slope at the same time when they triggered a large slab avalanche. One rode off of the slab. The other was partially buried but not injured. Here is a link to great video of the slide: https://www.youtube.com/watch?v=Nahs_eSGGK0&t=60s

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
Clear
Air temperature: 
Above Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: