Our guide on how to prepare for a tsunami alert as this year's Tsunami Preparedness Week approaches on March 22–30.

The California Geological Survey recently released new maps showing that potential tsunamis increase the threat of flooding in Alameda, Monterey, and San Mateo counties, along with other coastal ...

The maps, updated with new data and modeling, show the potential inland reach of a tsunami in a worst-case scenario. Areas of concern include Alameda, Monterey, and San Mateo counties, where ...

CAYUCOS, Calif. - As California officially observes Tsunami Preparedness Week this week, one of the most vulnerable communities in the state is located on the Central Coast. The small coastal town ...

A strong 7.1 magnitude earthquake hit near Tonga, prompting an initial tsunami warning that was later lifted for the Pacific island country. The U.S. Geological Survey said the quake hit about 100 ...

A massive earthquake has hit near Tonga, prompting fears of a tsunami for the Pacific island country. The US Geological ...

Roaring Sound: A loud, roaring noise from the ocean can indicate an incoming tsunami. Rapid Flooding: If you see water rapidly rising or a wall of water approaching, it is time to evacuate.

A magnitude 7.0 earthquake struck off the coast of Tonga early Monday morning, prompting a tsunami warning that has since been lifted. The U.S. Geological Survey said that the earthquake hit about ...

The Valdivian Earthquake, or the Great Chilean Earthquake, is the largest on record. It measured in at a magnitude of 9.5.

A tsunami warning has been lifted for Tonga after a strong 7.1 magnitude earthquake struck near the Pacific Island country.