'Hurricane' on Saturn

My first though was 'cool', my second was science-fictional: 'microscopic black hole'. Sometimes I wonder why my brain works in these ways...

One Nasa scientist, Michael Flasar, told Reuters news agency that the storm looked just like water swirling down a bath plug hole, only on a colossal scale. "We've never seen anything like this before," Mr Flasar said. "It's a spectacular-looking storm."

That's consistent with my 'microscopic black hole' thought!