HONG KONG, July 6 (Xinhua) -- An earthquake of 6.2 magnitude jolted 78 km NE of Ohonua, Tonga on Monday, the U.S. Geological Survey (USGS) said.
The epicenter, with a depth of 1.0 km, was initially determined to be at 20.7852 degrees south latitude and 174.4748 degrees west longitude.
