Miami, Florida – Misconceptions about tsunamis could put millions along the Atlantic coastline at risk, even as waves capable of traveling up to 600 mph remain a lesser-known but real threat from Maine to Florida.
According to the National Weather Service and NOAA, one of the most dangerous myths is that tsunamis only impact the Pacific. While less frequent, tsunamis can and have affected the Atlantic Ocean, Caribbean, and Gulf, with potential sources including underwater earthquakes, landslides, and distant events.
Another common belief is that tsunamis arrive as a single wave. In reality, they come in multiple surges that can continue for hours, with later waves often stronger than the first. Coastal areas from Boston and New York City to Charleston and Miami could see repeated flooding and dangerous currents if an event occurs.
Some residents assume there will always be ample warning time. While distant events may allow hours to prepare, locally generated sources—such as submarine landslides—could reduce that window significantly.
Officials stress that warnings should always be taken seriously. Rapid water movement, strong currents, and unexpected coastal surges can develop even without dramatic wave heights.
Preparedness remains essential along the Atlantic Coast, as the next tsunami threat—though rare—could develop quickly and impact multiple states with little notice.
