An unexpected culprit toppled beach chairs along the sand at normally calm Clearwater Beach, Florida, last Wednesday. West Coast surfers might snicker at the cause, but the National Weather Service confirms the rare 4-foot (1.2 meter) wave was caused by a kind of tsunami, just not the kind you usually hear about.
It was a meteotsunami, a type caused by storms with strong gusting winds, rather than the dramatic tsunamis triggered by earthquakes.