Bright blue "star" with accented with green with a green glowing cloud around it. Left bright yellow/gold tail which persisted for approximately the duration of event ( first trail sighted simultaneously with "star" and faded rapidly around the same time the "star" vanished. 2 seconds. Perhaps 2.5 seconds. Tail end persisted past event similarly ). Glowing cloud ( like how lighting behind a cloud appears ) seemed to follow the "star". Minor smoke like around tail predominantly closet to "star".
More like an incandescent burning out. Flickered more brightly and vanished before the flicker fully registered. Can't specify whether there was any sound accompanying the flash as I had loud music on.