Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Quake of Magnitude 7.3 Strikes Off Japan's Coast by Associated Press An earthquake with preliminary magnitude of 7.3 has struck off the coast of Fukushima prefecture in Japan. A tsunami warning for waves of up to three meters (10 feet) has been issued. The Japan Meteorological Agency says the quake struck around 6 a.m at a depth of 10 kilometers (6 miles). There were no immediate reports of fatalities. Fukushima prefecture is north of Tokyo and home to the nuclear power plant that was destroyed by a huge tsunami following an offshore earthquake in 2011. Please check back for updates on this developing story.