I went out for a walk, with no intention of taking pictures, but I got a quarter a mile or more down the road before I really regretted not having my camera because the clouds in the sky were so interesting. So I pretty much ran back to the house to get my camera and got this progression of photos that shows a huge dark cloud moving over the area. In the space of about 30 minutes it went from bright and sunny to almost night as the dark clouds came in and enveloped everything.

25/365 - January 25, 2010