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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Authorities ordered the evacuation of 1,500 people as a huge ash cloud spread across the sparsley populated mountainous area.
The 6,500 ft Calbuco is considered one of the top three most potentially dangerous among Chile's 90 active volcanos but no hot rocks or lava have been seen this time.