HS is more than 280cms. Skied a nearby NW aspect around 40 deg in steepness, and the skier triggered sluffs started initially slow, but eventually entrained a good bit of (new) snow, and became quite large, running full track.
Was curious about the possibility of buried surface hoar, that was observed around Cooke City on March 17 to upper elevations, but did not find it in this location.