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A powerful 6.7-magnitude earthquake jolted Chile's northwestern coast Sunday, US geologists said, generating a small tsunami and prompting authorities to evacuate two towns.
The quake struck at 6:16 pm (2116 GMT), according to the US Geological Survey, which had originally put the magnitude at 7.0.
Located 60 kilometers (38 miles) west-northwest of the port city of Iquique, the quake was 20km deep, the USGS said in an update. It was followed by a series of aftershocks.
The Pacific Tsunami Warning Center said in a bulletin that "sea level readings indicated a tsunami was generated". Tsunami wave activity was measured at 28cm (one foot).
"It may have been destructive along coasts within 200 km of the earthquake epicenter," the center added.
"Danger to boats and coastal structures can continue for several hours due to the rapid currents," it said.
Chile's national Emergency Office said an evacuation was ordered for the towns of Arica and Tocopilla due to the threat of a tsunami, though there were no immediate reports of injuries or damage to infrastructure.