Transgender Hurricane
Watching the news out of a quarter-eye, as TS Harvey drenched the city, I saw several discussions of a rotating system at the southwest part of the Gulf of Mexico. The consensus was that nothing would come of it, but they were monitoring it just in case.
A couple weeks later: Hurricane Katia had formed from that system, and hit Mexico. Its remnants emerged into the Pacific Ocean and reformed into Pacific Hurricane Otis.