Cloud structure of Saturn's 2010 storm from ground-based visual imaging

► We present observations in December 2010 and January 2011 of Saturn's GWS. ► We model the vertical cloud structure (10−3 to 1.4 bar) using these visible images. ► An ascent of the top level of the bottom cloud is found. ► Particles in the storm disturbed region are more reflecting than in the surroundings.