Cornice triggered avalanche on Heavens

Location Name: 
Pro Observation - Heavens Peak, GNP
Region: 
Outside of the Advisory Area
Date and time of avalanche (best estimate if unknown): 
Sun, 05/07/2017 - 12:03
Location Map: 

Red Flags: 
Recent avalanche activity
Observation made by: Professional Observer
Avalanche Observations
Avalanche Type: 
Slab
Trigger type: 
Natural
More detailed information about the avalanche: 

Cornice fall triggered slab on Heavens.  Guessing this happened on Sunday

Avalanche Photos: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: