These clouds were courtesy of Humberto. I took this while driving yesterday evening. The rain started about 30 minutes ago and they're expecting it to last until sometime tomorrow. We've been having drought conditions for the last couple of years, so we can use the rain.
BTW, the color was not enhanced with photoshop. Only minor cropping was done since my composition skills while driving are not very good.
Canon 30D - Canon 17-55 - 1/160s f/2.8 at 55.0mm iso400