Slide Images: Saturn and Titan
(1) Changing methane clouds near Titan's south pole taken with the W.M. Keck II telescope in December 2001 and February 2002. Nearly the same face of the moon is viewed in all three images. The large storm in the 28 Feb. image is over 1400 km long.
(2) Hubble Space Telescope image of a storm on Saturn.

Image Source: M.E. Brown, A.H. Bouchez, C.A. Griffith, HST/NASA;
Website: http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-saturn.html