Incident

Avalanche: Guardsman Pass area

JohnSalt Lake
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Quick report

Slope Angle
45°

Avalanche

Slab Width
61 m
Weak Layer
Facets
Trigger Type
Skier
Avalanche Type
Hard Slab
Slab Thickness
91 cm
Trigger Detail
Unintentionally Triggered
Start Zone Aspect
East
Avalanche Problem
Persistent Weak Layer
Start Zone Elevation
2743 m

Skier triggered on a shallow rocky convex steep slope. 4th skier on the slope that day. Crown brake was 6 inches (at trigger point) up to 3 feet deep. 3 people skiing. We knew the steep part of the slope had a likelihood of breaking but thought it would be manageable. we all underestimated the amount of snowpack that broke.... that being said we all had avalanche gear and had one person up top in eyesight of the skier and one at the bottom out of the path. Skier was buried under about a foot deep, with one ski sticking out. Buried For less then a minute.

Forecaster Comments: Trent Meisenheimer, visited the avalanche site on February 17th 2019. Below are pictures and comments from his investigation. Photo below is an overview of the avalanche.

This avalanches failed on near surface facets. It's likely these faceted grains formed over the cold dry period around the new year. It was hard to tell exactly the time period that the faceted snow formed in. However, it was very easy to find weak snow in the snowpit wall in this location. There was a very strong (1 finger) slab on top of loose faceted snow. My best guess is this area was wind loaded from the strong SW winds over the past few weeks. It's a very steep (48° degree) rocky slope.

Photo: Looking up at the avalanche crown. This slide was 2-3' deep and about 200' feet wide. The second photo shows the burial location of the victim. Thankfully, everyone had rescue gear and was able to dig out the buried person in just a minute or two. A few learning objectives:

1. Keep a close eye on your partners.

2. Have a beacon, shovel and probes.

3. Be in a place that you can perform a fast and successful rescue.

4. This was a good outcome - the group all had the right equipment and gear to make a successful recover in case anything happened.

Incident

Number Caught
1
Number Carried
1
Number Fully Buried
1

See below; full burial and recovery though ski sticking out.