Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. Aftershocks can occur days, weeks or even years after the first earthquake.

When it does, it releases energy in a burst, which causes the shaking of an earthquake. Earthquakes happen most often where tectonic plates meet. Tectonic plates are pieces of crust that fit ...

A state of emergency has been declred in Santorini, a volcanic island and popular tourist destination in Greece, as an 'earthquake swarm' that began earlier this month continues. Since 31 January ...

A powerful 7.6 magnitude earthquake in the Caribbean Sea Saturday night, north of Honduras and southwest of the Cayman Islands, briefly triggered tsunami alerts that were later lifted. The U.S ...

SAN JUAN, Puerto Rico - A Tsunami Advisory was in effect for Puerto Rico and nearby islands for part of Saturday evening after a powerful earthquake struck between Honduras and the Cayman Islands ...

After a pair of small earthquakes shook San Bernardino on Monday morning, the city was jolted by another earthquake just before 10 p.m., according to the U.S. Geological Survey. It was the second ...

An earthquake with a magnitude of 7.6 occurred on Saturday in the Caribbean Sea, according to the US Geological Survey, sparking a tsunami advisory. The tremor hit 129 miles southwest of ...

A pair of earthquakes at or above 3.0 in magnitude shook San Bernardino Monday morning. The U.S. Geological Survey reported that the first quake hit at 9:44 a.m. as a preliminary 3.5 magnitude ...