Island Park

From facebook message: "North facing slope 15 miles south of west Yellowstone probably 30ish degree slope. Probably 16-18 inch slab". Photo: T. Taubman

From facebook message: "North facing slope 15 miles south of west Yellowstone probably 30ish degree slope. Probably 16-18 inch slab"

The snowpack at low elevations is thin (<1 foot). Off-trail riding looked questionable, and we let the sleds stay in one piece for another day or two. We went a  cornice line at 9000.’ We walked over to our pit site on a NE facing slope, triggered a large collapse, and got an ECTP13 in a snowpack that resembled what Dave saw at Lionhead and Ian and Alex saw in Cooke City. There was 8” of new snow with 1” of SWE with a total snow height of just over 105cm.

Across the way, we dug on a SW-facing slope and found a similar snowpack structure although there were a few more ice crusts mixed into the 90cm deep snowpack (ECTP14).

We rode up a bit farther to get a view of the Jefferson Bowl and saw one, small natural avalanche that occurred within the storm snow.

There was no real way to navigate avalanche terrain without rolling the dice with the persistent weak layer that makes up the foundation of the snowpack. Avoidance is key.

From FB Comment: "We were seeing shooting cracks in the snow Sunday in the Black Canyon area."