Roll Cloud Photo... Waves From "Bertha"... Local Upwelling & Cooler Waterhttp://community.fox30online.com/blogs/bureshblog/archive/2008/07/07/3179394.aspx Classic summertime set-up on the First Coast with afternoon thunderstorms driven by sea breezes & outflows with some occasional "oomph" from a few upper level disturbances.  Check out the photo below from Amanda Seidel of a roll clouden-USCommunityServer 2.0 (Build: 60217.2664)