Tremors from a magnitude 8.3 earthquake off the coast of Chile were felt across the border with Argentina, hundreds of miles inland.
One Twitter user, Vickivillalobos, posted this video reportedly of heavy swells in a swimming pool in the Argentine town of Tunuyan, some 442km (274 miles) inland from Valparaíso - the nearest Chilean coastal city to the epicentre of the quake.
Residents in Buenos Aires 1,457km (905 miles) away on the eastern seaboard of South America also reported feeling the tremors, according to reports.
Tsunami alerts have been issued for parts of California's Pacific coast following an earlier strong magnitude 8.3 earthquake near Chile.
At least one person has died and 15 others injured in Chile following a strong earthquake off the country's west coast.
The mayor of Illapel, a town near the epicentre of the quake, said on a radio broadcast that one person had been killed by a collapsing wall, and 15 others were reported injured.
Reports from the Reuters news agency say the quake was felt as far away as the Argentine capital, Buenos Aires, on the eastern coast of South America.
Buildings and mining facilities have been evacuated after a strong earthquake struck off the coast of Chile.
Local media and news agency reporters say there are no initial reports of casualties following the magnitude 8.3 quake.
Aftershocks of magnitude 6.2 and 6.4 have since been reported by the US Geological Survery.
@huella_digital posted this image to Twitter showing scores of people in the streets in Valparaiso, the coastal city nearest to the epicenter.
Chilean news anchor Hugo Chávez also tweeted this photo of Santiago airport being evacuated.
Hazardous Tsunami waves warning have issued for the Pacific island of Hawaii and coastal regions in parts of Peru and Chile.
A tsunami warning has been issued for the Pacific island of Hawaii following a magnitude 8.3 earthquake off the west coast of Chile.
Reuters report that tremors from the quake shook buildings in Chile's capital city Santiago.
There are no initial reports of injuries or damage, the news agency said.
Tsunami waves are also possible along the coasts of Chile and Peru, the Pacific Tsunami Warning Center said.
If tsunami waves reach Hawaii, experts have estimated the earliest arrival time to be 02:28 Hawaii Standard Time (12:28 GMT).
The US Geological Survey initially reported the quake at a preliminary magnitude of 7.9, but it was quickly upgraded.
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