A massive 8.8 magnitude earthquake struck 80 miles off the east coast of Russia on Tuesday night, prompting a tsunami advisory for Southern California that will remain in place until Saturday. Tsun… ...

What is a tsunami? Unable to view our graphics? Click here to see them. Tsunamis are a series of giant waves caused by undersea earthquakes at tectonic plate boundaries, or volcanic eruptions.

Tsunami waves hit Hawaii after 8.8 earthquake. We explain the natural disasters While South Florida is safe from earthquake and tsunami threats, many are wondering about how the phenomena work.

What is a tsunami warning? What to know after huge earthquake. Tsunami warnings are more serious than tsunami watches, according to the U.S. Tsunami Warning System.

Tsunamis aren’t just bigger-than-average waves. Triggered by undersea earthquakes or volcanic eruptions like the one in Tonga, they are fast, massive and potentially destructive. Here’s why.

Tsunamis radiate in all directions from their source and cover enormous distances. They are a rare phenomenon but can create dangerously powerful currents and cause deadly flooding in coastal areas.

Tsunami Warning: A magnitude 8.8 earthquake hit Russia’s Far East, generating small tsunamis in Japan and Alaska. Warnings were issued across the Pacific, including Hawaii and Central America.

Scientists say they have identified the exact mechanism responsible for the exceptional tsunami that spread quickly across the world after the colossal eruption of the Tonga volcano earlier this year.

Warnings, advisories and watches were issued in Alaska, Hawaii, California, Oregon and Washington after a magnitude 8.8 earthquake off Russia's coast.

Tsunami Warning: A magnitude 8.8 earthquake hit Russia’s Far East, generating small tsunamis in Japan and Alaska. Warnings were issued across the Pacific, including Hawaii and Central America.