Lampposts swaying in the wind on M62 as snowstorm hits


Telegraph

A man has caught on camera lampposts swaying violently in the wind as the freezing weather conditions continue across Britain.

The video, by Bob Hill, was filmed along the M62 near Lofthouse, a West Yorkshire village between Wakefield and Leeds.

The Highways Agency said the video shows ‘vortex shedding’ – when the natural frequency of a lamp column matches the speed of the wind.

A spokesman for the agency said that the phenomenon “only happens at certain wind speeds and is a known but fairly rare event”.

Watch the dramatic video as several lampposts swing from side to side in the blustery conditions.

http://www.telegraph.co.uk/news/weather/11378717/Lampposts-swaying-in-the-wind-on-M62-as-snowstorm-hits.html

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