I think I saw this once in Florida as a child.

I had climbed a tree (at night) and looked down and there was a red glowing ball of light that drifted and bobbed along horizontally maybe 6 or 8 feet off the ground, and then disappeared. It was maybe a foot across or a little less. A friend was with me, we both watched in amazement.

I never knew what it was and halfway thought maybe I imagined it (except my friend saw it too). Until today I never knew what it might have been as this is my first time hearing of ball lighting. But it seems likely that is what it was.

After so many decades, glad to have a rational explanation at last! Thanks HN!