Leavitt Creek Avalanche

Location Name: 
Leavitt Creek Avalanche
Region: 
BWRA
Date and time of avalanche (best estimate if unknown): 
Fri, 04/14/2017 - 10:58
Location Map: 


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Rapid warming
Obvious avalanche path

Observation made by: Avalanche Specialist
Avalanche Observations
Avalanche Type: 
Dry
Slab
Slope: 
45degrees
Trigger type: 
Snowboarder
Crown Height: 
Less than 1 ft
Aspect: 
North
Weak Layer: 
Storm Snow
Avalanche Width: 
90ft.
Terrain: 
Above Treeline
Elevation: 
9 238ft.
Bed Surface: 
Old Snow
Avalanche Length: 
450ft.
Number of similar avalanches: 
4
Number of people caught: 
1
Did the avalanche hit a building, vehicle, or structure?: 
No
More detailed information about the avalanche: 

This Wind-Slab, Snowboarder triggered avalanche happened Friday early in the day. The crown of the avalanche was 6"-12" deep & involved the new wind-driven snow we got the day prior. This avalanche and at least 2 other human triggered slides could be seen in the Leavitt area on North & Northwest aspects at & above treeline. A small roll-over or steepening of terrain on these leeward aspects is where snow was deposited forming the wind-slab. The final 2 pictures are of barrel-shaped cornice & the result of afternoon warm-up & subsequent cornice collapse.

If you see or are involved with any avalanche activety please report it to me (Ryan-Snowmobile Ranger) or post an observation here. No judgements & it can be anonymous. More information is better!

Avalanche Photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
Clear
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Southwest
Accumulation rate: 
None
More detailed information about the weather: