The U.S. Geological Survey reports an earthquake of magnitude-7.3 struck off Japan's east coast early Saturday morning.
Minor tsunamis measuring up to 15 inches were reported along the coast, but no damage has been reported and all tsunami warnings have been suspended.
The quake, striking at 2:10 a.m. Tokyo time, occurred about 170 miles off Fukushima. According to local news reports, the quake was felt in Tokyo, some 300 miles away.
In March 2011 a magnitude-9.0 quake generated a massive tsunami that killed an estimated 19,000 people and caused multiple meltdowns at the Fukushima nuclear plant.
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Pacific Tsunamis Warning Center: http://ptwc.weather.gov/