Avalanche: Turnagain

Location: Lower north warmup and triangle bowl

Date:

December 2, 2021 7:50pm

Observer:

Clint Kyffin

Route & General Observations

Snowmachine triggered on convex roll 200 meters from the ridge on lower north warmup. Put 10 ski lines on same aspect without triggering.
4- to 500 foot wide 2’ crown

Triangle went natural or sympathetic at roughly the same time.
4-500 ft wide 2-3’ crown

Another slide went on the same south west aspect between triangle and pipe dreams. Snowmachine triggered.

View of the avalanche in Warmup Bowl.

Contact, Location & General Observations

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Forecaster Comments

Another group that was in Triangle bowl at the same time reached out to us via Instagram to share some additional info. Their estimation of the size of the avalanche in Triangle bowl was roughly the same size as reported by this group. Thanks to Warren Gage for sharing additional details and photos.

We've also received word of two other large snowmachine-triggered slides on Seattle Ridge near Widowmaker and Little Sweeden. More details and photos: https://www.cnfaic.org/observations/seattle-ridge-132/

Avalanche Details

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Trigger	Unknown	Remote Trigger	Unknown
Avalanche Type	Unknown	Aspect	Unknown
Elevation	unknown	Slope Angle	unknown
Crown Depth	unknown	Width	unknown
Vertical Run	unknown

Photos & Video

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View of the avalanche in Triangle Bowl, shared by Warren Gage via social media.

Location

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