All-Free-Download.com, CanStockPhoto.com and Digital-Photography-School.com all offer free images of lightning. National Geographic magazine also offers several free images of lightning from locations around the world on its website.
Most of the lightning images from All-Free-Download.com are free to use, but some of them feature watermarks from their sources. CanStockPhoto.com features a variety of lightning images, including both daytime and night-time scenes. The lightning photos on Digital-Photography-School.com are in a variety of settings, including cities, airports and at sea. National Geographic offers users professional photographs from iconic locations, such as the Oriental Pearl TV Tower in Shanghai, China, the Grand Canyon and Kavala, Greece.