Michelle Lynn Hahn, 47, disappeared in Honolulu on August 26, 2015, after a sudden storm surge transformed a drainage runoff near Liliuokalani Botanical Gardens into a violent torrent. At the time she was living on a makeshift raft secured in the runoff and was with a male companion when heavy rains snapped the raft free and swept them into Nuuanu Stream.

Search and rescue teams and volunteers searched the stream and surrounding area but found no trace of her. Investigators concluded she was lost to the floodwaters and she is presumed to have drowned, although her body has never been recovered.

Anyone who knew Michelle, her movements around the botanical gardens that summer, or who has information about the events of August 26, 2015, is asked to come forward.