A tsunami is a series of waves that can be caused by earthquakes, the National Oceanic and Atmospheric Administration (NOAA) said. A 7.4 magnitude earthquake struck 219 kilometers south of Ushuaia ...

A new tool that assesses the level of danger posed by tsunamis in real-time has been made operational on a global scale.

While the tsunami warning was canceled shortly after evacuations and transportation shut down, San Francisco forecasters said a small wave had been seen off the California coastline.

Unlike the waves we enjoy at the beach, tsunami waves don’t break because they don’t get steep enough. ... but property damage was minimal because there were few cities or towns nearby.

Fortunately, damage was relatively minimal. A tsunami warning was issued for coastal areas of the Pacific Northwest, including the San Francisco Bay area, then was canceled a couple of hours later.

A tsunami that never ends? Study highlights a looming West Coast risk. The tsunami wave from an anticipated earthquake off the West Coast could reach 100 feet and permanently flood parts of the coast.