Waterspouts Over the Adriatic Sea
Earth Science Picture of the Day.
No it’s not a photo-shopped image, it’s really a photograph taken by Roberto Giudici while on a boat trip to Brindisi, Italy, taken on July 23, 1999. The funnel clouds dropped from the sky in front of the boat, with the most resent funnel cloud in the foreground.
Waterspouts can generate winds over 70mph which would make it an F0 on the Fujita Scale.
More on Waterspouts.