Wunderground is best known for a long-running National/International Weather Site (enter your zip-code - get your local weather).  It's one of the best for that, but for almost as long as they're been around, they've also been inviting folks to send in their photos of the "weather".  They've got close to a million photos by now (including a few of mine) - and folks, I gotta tell ya ...

... some of the best photography I have ever seen is on this site - most of it taken by "amatures"!

You're welcome to upload your own too - and maybe you'll make it into the "Approver's Choice" category (where all the best photos wind up!)  This site is worth visiting at least once-a-day just to see what's new, though it update every few minutes.  You can also get a special desktop screensaver that will download updated photos as it runs...

Visit  http://www.wunderground.com/wximage/viewimages.html