According to numerous other websites, the image is not real. It is a composite of two photographs. The image was manipulated to combine two different photos, one of an oil rig (origin unknown), the other of a nighttime waterspout illuminated by a lightning stroke over Lake Okeechobee, Florida, taken by amateur photographer Fred Smith.
Amateur photographer Fred Smith photographed the waterspout and lightning on June 15, 1991 from his backyard overlooking Lake Okeechobee, Florida. He was taking pictures of a lightning storm when he got lucky and snapped a shot (bottom) of a waterspout illuminated by a flash of lightning. The photo subsequently appeared on a calendar, and in 2001 it became available for purchase
online. Soon after it began circulating via email
-- usually with incorrect captions that described it as a photograph of whatever tornado had most recently been in the news.
In early 2008 an unknown hoaxer pasted an oil rig into the picture and added the "not what you want to see" caption. This version has been circulating ever since.