UDOT PLANNED AVALANCHE CLOSURES!!

Avalanche: UFO Bowls

Observer Name
Nalli
Observation Date
Tuesday, February 23, 2010
Avalanche Date
Tuesday, February 23, 2010
Region
Provo » American Fork » UFO Bowls
Location Name or Route
UFO Bowl #3
Elevation
9,800'
Aspect
Northeast
Slope Angle
37°
Trigger
Unknown
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Weak Layer
Surface Hoar
Depth
14"
Width
100'
Vertical
800'
Caught
2
Carried
2
Buried - Partly
1
Injured
1
Comments

Normal 0

On the way up, we identified this trouble layer yet again and saw that it was below 8” of partially settled snow. It was still reactive in our pits with CT14’s Q2. We noted that while it was still reactive and not going away any time soon, there wasn’t that big of a slab on top of it on this specific slope and we felt like we could manage it.

I skied first and enjoyed fine powder turns until about ¾ of the way down when I came to the steeper breakover that caused trouble for two skiers one week ago. They had a similar episode as us and may have broken some of the same rules. I pulled up and ski cut the breakover anticipating the small slab that I found. It broke 10’ above me and propagated 40’ wide. After digging in and letting it go by, I recognized the hoar that here was buried 14”. I stopped to take a closer look and snapped these next three photos.

Comments

Normal 0 Because of the terrain, I was now out of sight with my partner and thought to myself that I should get moving because he didn’t know that I was still on the slope and also that I had triggered this slide. How many mistakes it this so far… Just then I was hit by a fast moving wall of snow that picked me up and cartwheeled me about 200’ before I came to rest mostly buried. I had no chance to get out of the flow and stroked vigorously to stay close to the surface. I then got hit by another pulse of debris that moved me downhill a bit more and allowed me to swim closer to the surface. When I finally stopped, I was facing downhill with only my head, right arm and tail of my right ski out of the snow. I wiggled my right leg out and dug with my right hand to get the rest free. I lost both poles, hat and glasses and later found the poles.

Comments

Normal 0

The slide above me was about 100’ wide and 14” deep and was triggered on a 37° slope by my partner who was carried a short way before stopping in some trees. It traveled at least 500’vert. before hitting me.

I often struggle with how to manage terrain that makes you lose sight of your partners, but that combined with not great communication at the top, a couple of curious avalanche guys, disregarding obvious signs of instability, a bluebird day, alluring powder, and some pesky buried surface hoar, you get the recipe for an accident. We should know better!

Coordinates