Hammil Bowl

AVALANCHE OBSERVATION
Hammil Bowl

Drainage:

Submission Info
Saturday, February 8, 2014 - 3:00pm
Red Flags: 
Avalanche Type: 
Slab
Slope: 
40degrees
Trigger type: 
Natural
Crown Height: 
4 ft
Aspect: 
Northeast
Weak Layer: 
Other - explain below
Avalanche Width: 
1 000ft.
Terrain: 
Above Treeline
Elevation: 
11 000ft.
Bed Surface: 
Other - explain below
Number of similar avalanches: 
1
More detailed information about the avalanche: 

Large, D4 avalanche. Probably triggered by cornice drop and/ or windloading during Feb 7-10 storm. Failure layer, small, < 2mm facets. Avalanche debris hit Hammil Lake and broke lake ice.  Pits dug along flank of avalanche at 10,100 ft.  5-10 crowns ranging in elevation from 10,000 to 11,000 feet. In places above smooth rock surfaces, avalanche stepped down to old depth hoar and facet layers.

Avalanche Photos: 
Snowpit or crown profile photo or graph: 
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Calm
Precipitation: 
Air temperature trend: 
Static
Wind Direction: 
Accumulation rate: 
None
More detailed information about the weather: 
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