These were some clouds that I shot right before sunset right outside my window about 2 days ago, the night before we had one of the worst rainstorms of the year. It knocked out the power and drove sheets of rain right under my front door. Out here in So. Cali, we don't really know what rain is (compared to the rest of the people in the country, so this was bad by our standards)
I personally love how the light catches in the top layers of the cloud and is almost totally black underneath. (It was near dusk, so the shot was overexposed and the flash is damn near useless when I'm trying to shoot clouds.)
The contrast wasn't this good in real life, but I liked how the photo came out, so i decided to keep it.
Comments are welcome. I took some other shots, I should have them ready to post sometime tommorrow.