Strong quakes hit Japan, Indonesia

(CNN) - A magnitude 6.9 earthquake rattled Japan on Thursday, within minutes of a magnitude 6.6 earthquake in Indonesia, the U.S. Geological Survey said.

There were no immediate reports of damage or injuries from either quake, but both prompted tsunami warnings, although Japan's Meteorological Agency predicted it would be small, about 50 centimeter (20 inches).

The Indonesian quake occurred at exactly 9 a.m. (8 p.m. Wednesday ET), the USGS said. Its epicenter was offshore, about 75 miles (120 km) north of Ternate in the province of Moluccas in eastern Indonesia.