Extreme Gusts Of Wind Cause These UK Streetlights To Do The Vortex Shedding Dance

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If you’re a happy streetlight, and you know it… then sway all over the place and freak out English motorists. This video from the M62 motorway captured a rare natural phenomenon called “vortex shredding” that makes these lampposts look like they are dancing in the wind.

Vortex Shedding: Why The Streetlights Swayed In The Wind

What’s “vortex shredding” and why are the lamps swaying? When the natural frequency of a lamp column matches the speed of the wind, it’s called “vortex shedding.” It’s a very rare event and only happens at certain wind speeds.

Via Bobbles Hill