6.2 quake strikes Indonesia off Lombok coast

© earthquake.usgs.gov
A powerful 6.2 magnitude earthquake has struck some 190 miles south of the Indonesian island of Lombok, according to preliminary data from the US Geological Survey.

The quake happened at a depth of 29 km some 300 kilometers south of Praya, the main town of Central Lombok Regency on Lombok Island.

There were no immediate reports of casualties or damage.

With tremors lasting for three to four seconds, the jolt briefly startled tourists on the Indonesian resort island of Bali, according to Reuters.

Although the quake was strong, it didn't trigger a tsunami alert, Sutopo Purwo Nugroho, spokesman for Indonesia's Disaster Mitigation Agency (BNPB), was quoted as saying.

"The quake went on for quite a while," a witness in Lombok told Reuters. "People ran out from houses in panic," they added.

READ MORE: 6.5 quake strikes Indonesia off Sumatra coast, tremors felt in Singapore

The quake happened along the 5,600 km of the tectonically active Sunda convergent margin, where India and Australia plates are converging with and subducting beneath the Sunda plate at a rate of approximately 50 to 70 mm/yr, according to the USGS.