In September, an 8.3 magnitude earthquake in Chile triggered a 16-foot tsunami. Some of the damage is shown in this photo. On Saturday, a new, magnitude-6.8 earthquake rocked the central coast of the country.

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There are no immediate reports of damage

The quake hit 66 miles southwest of Coquimbo

CNN  — 

A magnitude-6.8 earthquake rocked the central coast of Chile on Saturday, two months after a temblor struck the same area.

The most recent quake hit 66 miles southwest of Coquimbo, the U.S. Geological Survey reported.

There were no immediate reports of damage or injuries.

In September, a magnitude-8.3 earthquake struck off Chile’s coast, killing 11 people and unleashing massive waves on coastal towns. It triggered a 16-foot tsunami wave in one of the hardest-hit regions.

How are earthquakes measured?

Advance planning and authorities’ quick reaction saved lives. About 1 million people were evacuated to higher ground in the September quake.

No tsunami warning has been issued after the most recent quake.