Date: 04.15.17
 Location:  Vader-Marsh Ck Zone/Region:  Banner Summit
 Activity:   Skate skiing/crust cruising near Cape Horn
 How Many?  Many
 Trigger:   Natural
 What type of avalanches?   loose dry, loose wet
 What size?
 Size 1: Relatively harmless to people
 What Elevation?  Alpine
 What Aspect?   E, SE
 Comments: Most activity was north of Decker Peak. Lots around Williams/Meadow Ck Bowl, otherwise no more than a few in each cirque. One slide near Cabin Ck in Boulders on ~SW aspect. All small slides. One dry loose on N face of Mystery Mt, natural slide that was there before skiers today.
 Comments: Cool day with 1-3cm of newer snow in the flats getting moist but not really wet. Intermittently forming surface crust during day when clouds moved in and out. Skies were PC, air temp 20's-30's F. Lots of tracks visible (on drive back to Hailey) in interesting terrain (N face Mystery, gang skied Abe's, Horton Peak, Funnel, Titus Lake Chutes) with no significant activity seen from roads.