Monster storm on Saturn. Click for larger. Credit: NASA/JPL-Caltech/SSI

Now this is a storm!  The storm is overtaking itself.  The image was taken on February 25, 2011 after the storm was 12 weeks old and apparently the storm is still active.  The interesting thing is the article (included below) the clouds moved and I had myself convinced the storm itself was instead moving north.

Check out the story at NASA.