Re: It's a hurricane?
also you have fastest spinning at the equator, and in the 'hurricane region' the differences in speed (over small latitude changes) are the highest. So you also have slow vs fast air, coupled with (probable) liquid core, solar heating, and not a whole lot of possible things to slow it down (like land masses and a relatively thinner atmosphere that you find on Earth).
And the discoloration of the red spot may affect temperature of things it 'shadows'. be of a different mass than the rest of the atmosphere, etc. etc. all contributing to its formation and behavior.