A strong, magnitude 8.3 earthquake hit off the coast of Chile, 81 miles (130 km) west-northwest of Iquique, Chile, the US Geological Survey said on Wednesday.

The quake was upgraded to magnitude 8.3 from previously reported at 7.9.

Hazardous tsunami waves from the quake were possible along the coasts of Chile and Peru within the next several hours, the Pacific Tsunami Warning Center said.

The quake struck at a depth of 5.2 miles (8.4 km), the USGS said. A Reuters witness said the quake shook buildings in Chile's capital, Santiago. There were no immediate reports of injuries or damage.

A tsunami watch was issued on Wednesday for Hawaii following the quake, the Pacific Tsunami Warning Center said.

The center said if tsunami waves impact Hawaii, the estimated earliest arrival time would be 2:28 a.m. Hawaii Standard Time (1228 GMT) on Thursday.