Cooke City

From IG: Wet slide to the ground above Quake Lake. 

From obs: "Natural cornice failure and small slab on Iceberg Peak’s NE face. We skied by the day prior and judging by what the wind did to our tracks overnight, this looked like it happened in the morning." Photo A. Joy

Natural cornice failure and small slab on Iceberg Peak’s NE face. We skied by the day prior and judging by what the wind did to our tracks overnight, this looked like it happened in the morning.

Dug a pit on our way up the west side of Henderson Mountain. Incline 26 degrees, elevation 9545. Surface depth at 165cm, dug down to about 65cm. Performed extended column test and yielded ECTN17 along melt freeze crust at 135cm above ground. 

From email: "Had propagation on 1.5mm rounding facets below the mid-March, 1/2cm thick and knife hard MF crust. This location is always shallow and has a poor structure, but I was surprised to get propagation.

Further up valley on a west aspect, HS 130, 1 of 2 pits had ECTP28 on the basal facets. Pretty wild to still be getting propagation in mid April. 

Winds were light out of the south, gusting to strong at ridgetops out of the west with active snow transport. No wet loose activity seen today, but several old wet loose avalanches on Climax from the last warm up. "