Photos

"Avalanche debris we encountered while skinning up the access road. It piled roughly 15-20 feet onto the road." Photo: T. Papritz

"Another of many deep slab avalanches observed. This one was located south of Emigrant peak on a east-facing aspect." Photo: T. Papritz

"Another of many deep slab avalanches observed. This one was located below the saddle south of Emigrant peak on a east-facing aspect." Photo: T. Papritz

"Very large and destructive deep slab just north of emigrant peak on a east-facing aspect. The debris likely ran over 1000 vertical feet and stopped towards the bottom right of the image. We think the smaller slide on the far right was triggered as a secondary slide as a result." Photo: T. Papritz

"Very large and destructive deep slab just north of emigrant peak on a east-facing aspect. The debris likely ran over 1000 vertical feet and stopped towards the bottom right of the image. We think the smaller slide on the far right was triggered as a secondary slide as a result." Photo: T. Papritz

A skier near Paradise Valley "... noted some recent dry slab (I'd wager within the last 3 days/warm-up) activity above Green and Blue gullies up Pine Creek." Photo: G. Antonioli

A skier near Paradise Valley "... noted some recent dry slab (I'd wager within the last 3 days/warm-up) activity above Green and Blue gullies up Pine Creek." Photo: G. Antonioli

An image of the 4 crown and location of debris.

This crown was the one to the furthest looker's left of the bowl. Photo: GNFAC

These trees were bent over from repeated avalanches in this bowl. Photo: GNFAC

The deepest part of the crown was estimated to be 10-12' deep. It was a steep and heavily wind-loaded with a rocky starting zone.  Photo: GNFAC

The avalanche was powerful and put debris far down the slope along the flat bench. Photo: GNFAC

These 4 avalanches seem to have run at the same time (estimated 15 or 16 February) although the crown does not connect them, but the weak layer of depth hoar surely does. Slides 1 and 2 merged into the huge debris field. Photo: GNFAC

The end of the runout is marked with the arrow. Photo: GNFAC

I measured the Alpha Angle (angle from crown to toe of debris) at 16 degrees. This is a very low angle that signifies the avalanche ran about as far as it ever could based on the size of the path. I took 5 measurements using 2 inclinometers to make sure this was correct. Photo: GNFAC

The uphill branches on this stand of trees was freshly limbed up to 15' high. Photo: GNFAC

From IG #gnfacobs post: "An avalanche from early Tuesday (02/18) morning caused by a natural cornice fall. Note the step down partway down the path. ENE @ 9700. Ran 1300’." Photo: A. Whitmore

From IG #gnfacobs post: "An avalanche from early Tuesday (02/18) morning caused by a natural cornice fall. Note the step down partway down the path. ENE @ 9700. Ran 1300’." Photo: A. Whitmore

We saw this crown on an east aspect around 9,000 feet above Blackmore lake on 2/21/20. It likely broke during the weekend of 2/15-2/16, but could be more recent. Photo: GNFAC

Crown of an avalanche that broke the weekend of 2/14-2/15 on a SE aspect around 9,700' on Mt. Blackmore in Hyalite. Depth was 3-5 feet. Avalanche in background is one of at least seven we saw in this drainage. Photo taken 2/21/20: GNFAC