BEIJING, June 4 (Xinhua) -- An earthquake measuring 5.5 on the Richter scale jolted 84km ENE of Hihifo, Tonga at 09:18:37 GMT on Saturday, the U.S. Geological Survey said.
The epicenter, with a depth of 10.0 km, was initially determined to be at 15.5368 degrees south latitude and 173.0914 degrees west longitude.
