Wow now that is a hurricane.
NASA Sees into the Eye of a Monster Storm on Saturn
"NASA's Cassini spacecraft has seen something never before seen on another planet -- a hurricane-like storm at Saturn's south pole with a well-developed eye, ringed by towering clouds. The "hurricane" spans a dark area inside a thick, brighter ring of clouds. It is approximately 8,000 kilometers (5,000 miles) across, or two thirds the diameter of Earth. "
There is also a short movie of it in action at the above url.