Sawtooth Slide Paths, wet loose avalanche

Location Name: 
Sawtooth #3
Region: 
Lick Creek Area
Date and time of avalanche (best estimate if unknown): 
Thu, 02/09/2017 (All day)
Location Map: 
United States
45° 0' 28.0008" N, 115° 56' 20.0112" W
US


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

Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Wet
Trigger type: 
Natural
Aspect: 
West
Weak Layer: 
Other - explain below
Terrain: 
Below Treeline
Elevation: 
7 000ft.
Bed Surface: 
Old Snow
Avalanche Length: 
1 000ft.
More detailed information about the avalanche: 

Confined path wet loose avalanche that probably ran during major high elevatio rain event.  Rated as R3,D3. This avalanche broke small trees mid path and looked like it started from a point release in the upper 1/3 of the path.  The snowpack was saturated down more than 3.5 feet by nearly 2.5 inches of SWE during this storm. Numerous wet avalanches of varying sizes were observed in the Lake Fork Drainage on Friday 2/11/17 including one similar sized avalanche across the canyon from Slickrock Dome. Some of the smaller avalanches had crowns visible in steep, unsupported terrain.  Large glide cracks were also widespread and the heavy accumulation of ice on the Slickrock Dome had shed as well.  All of these events coincided with the rainline rising to over 8000 feet.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
50% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Precipitation: 
Mixed rain and snow
Air temperature trend: 
Cooling
Wind Direction: 
South
Accumulation rate: 
Less than 1 in. per hour