PERTH AMBOY, N.J. -- The National Weather Service says powerful thunderstorms created a small tsunami off the New Jersey coast.
Known as a meteotsunami, it resulted in fluctuating water levels for several hours, reaching as high as 10 inches above normal. But there were no reports of damage from the event.
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The abnormally high tides were reported in areas from Perth Amboy in New Jersey to Delaware's Fenwick Island.
Officials say meteotsunamis are driven by air-pressure disturbances often associated with fast-moving weather events, such as severe thunderstorms and squalls.
Most meteotsunamis are too small to notice.
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