3 simultaneous Horseshoe Vortices, September 16th 2007, Mariakerke (Gent)

Something it takes years before one sees a certain phenomenon, but when it happens, it comes with the lots. I had seen a horseshoe vortice before, but not a very convincing one. And then one evening, while small cumuli dissipate in a clearing sky in the evening, all of a sudden 3 vortices can be seen at different places in the sky.




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