I think this is real: Waves generated by tsunamis are not surfable, officials warn [via FT] 
Jim Howe, operations chief of the city Ocean Safety Division, said a
tsunami wave on the open ocean travels 500 mph compared to a surfing
wave that travels 30 to 35 mph. 
Howe advised surfers to be sensible during a tsunami warning. "Don't
grab a surfboard and wax it up. Head for high ground," he said. 
Hilarious. 
      12:17:39 PM     
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