Avalanche: Hatcher Pass

Location: Gold Cord Lake moraine

Date:
Observer:
Route & General Observations

Skied Nosebleed and was coming out Gold Cord Lake heading for the mine road to ski the groomer. Avalanche was on the moraine coming out of the lake.

Also, slope skiers left on Nosebleed, the steeper part where sometimes the uptrack is put, all slid in one of the recent storms. Lots of chunks on the slope and debris on the lake covered by a couple inches of fresh snow.

Avalanche Details
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Trigger SkierAvalanche Type Soft Slab
Aspect SouthwestElevation 3900ft
Slope Angle 30degCrown Depth 8in
Width 150ftVertical Run 300ft
Avalanche Details

Went to ski the slope and made two hard, cautious turns to test the snow and slope. Snow was more heavy and wet from the sun. On 2nd turn the snow cracked and propagated below me, spreading across the slope. The speed of the moving snow was moderate, chunky and heavy enough it might knock a person down. Debris wasn't enough to bury someone, but did go in a small terrain feature that made it pile up a bit more. Definitely failed on the infamous drizzle/sun crust. Skied the bed surface out which was unbreakable crust. No dogs or people caught.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?No
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?Yes
Observer Comments

Group of 2 that broke trail to the top of Microdot said they heard whumphing, not right near the trail but nearby. There was a large shooting crack when I stopped for the avalanche that continued from my skis across the gully another 75ft or so.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Bluebird with clouds quickly coming in. Hot in the sun. Flat light before reached the parking lot.

Snow surface

Mix of sun crust and moderately wet snow on south and west faces.

Photos & Video
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