Incidente

Avalanche: Hells Canyon

UAC Staff/Snowbasin PatrolOgden
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Avalanche

Slab Width
30 m
Weak Layer
Facets
Trigger Type
Snowboarder
Vertical Fall
457 m
Avalanche Type
Soft Slab
Slab Thickness
41 cm
Trigger Detail
Unintentionally Triggered
Start Zone Aspect
Northeast
Avalanche Problem
New Snow
Start Zone Elevation
2713 m

This avalanche was triggered by a solo snowboarder on the afternoon of January 8, 2024 in the Hells Canyon backcountry area outside of the Snowbasin Ski Area boundary. The powder cloud of this avalanche was reported to the Snowbasin Ski Patrol by a local who observed the powder cloud from a distance, however the triggering party did not stick around to talk to the patrollers. When the hasty team arrived on scene they observed one snowboard track in and no tracks out from their very limited vantage point on the ridge. Weber County Search and Rescue was contacted and they worked with the State of Utah DPS and Snowbasin Ski Patrol on this avalanche site. This avalanche, although it was only 16" deep by 100' wide entrained all the new snow and ran 1500' vertical feet to the flats covering over other backcountry tracks in the area. This avalanche ran on weak faceted snow on the ground and although it was a very soft slab the debris set up quite hard and if someone had been buried in the debris they would not have survived. This avalanche was a repeater, which means that this area had slid in early December and had a thinner weaker snowpack. There are many other locations throughout the state with a similar snowpack structure and as we get more snow in the upcoming weeks these areas that are thinner are suspect to be triggered again. This backcountry areas is an avalanche prone piece of terrain that has been the site of a number of fatalities and close calls over the years. Thanks to the Snowbasin Ski Patrol, Weber County Sheriff Search and Rescue, and the State of Utah DPS for responding.

Incident

Number Caught
1
Number Carried
1
Terrain Summary
<p>Photo 1 and 2- Crown Face</p> <p>Photo 3- A portion of the debris</p> <p>Photo 4-Partially covered tracks looking upslope where the avalanche ran through the Gluttony slide path</p>