Koenig Bowl

Location Name: 
Koenig Bowl
Region: 
BWRA
Date and time of avalanche (best estimate if unknown): 
Sat, 04/06/2019 - 16:13
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: 
41degrees
Trigger type: 
Natural
Crown Height: 
Less than 1 ft
Aspect: 
East
Weak Layer: 
Storm Snow
Avalanche Width: 
225ft.
Terrain: 
Above Treeline
Elevation: 
10 444ft.
Bed Surface: 
Storm Snow
Avalanche Length: 
175ft.
Number of similar avalanches: 
4
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0
Did the avalanche hit a building, vehicle, or structure?: 
No
More detailed information about the avalanche: 

The BWRA has had a unique & active avalanche cycle this week. We have been observing new avalanches all week with a variety of forms including: Loose Wet, Wind Slab, Cornice Fall, & Wet Slab. Many of the avalanches have released naturally but some have been initiated by skiers & snowmobilers, with very little information provided. Photo 1 is of a Wind Slab avalanche, in Koenig Bowl, which can be seen from a great distance away & was not there on Saturday. It is unclear if the tracks underneath the debris are associated with the release mechanism of the slide. Photo 2 is in the Deadman Crk drainage on a NE aspect with two snowboard tracks through the avalanche starting zone. These two avalanches have the same Wind Slab problem that slid on a density change within the most recent snow, roughly 15cm (6") deep. Photo 3 is in the Leavitt Cirque on its West wall, & was a large Cornice failure. Lingering pockets of Wind Slab & large growing Cornices are still scattered across the alpine & could prove reactive to triggers. The lack of a substantial overnight refreeze will allow for continuous melting & loosening of snow grains.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Moderate
Precipitation: 
None
Air temperature trend: 
Static
Wind Direction: 
West
Accumulation rate: 
None
More detailed information about the weather: 

Sunny skies with fast moving patches of clouds. Temperatures in the sun were around 40F. West to Northwest winds were strong to moderate & blowing snow was observed. Surface snow was either being transported by wind or baked by the sun.