NASA keeps a web site of satellite imagery for various natural disasters that occur across the world. The picture to the right is of the fires and smoke in California and is from the MODIS Rapid Response Team, Goddard Space Flight Center. You can read more about this image on Earth Observatory page.
The Earth Observatory Natural Hazards page in addition to having images of the US also covers natural disasters, such as the dust storm in Egypt this weekend.
Want more aerial photography and satellite imagery? Check out the library's guide.