TOKYO - A strong earthquake with a preliminary magnitude of 5.5 jolted the Ibaragi Prefecture near Tokyo on Sunday, Japanese public broadcaster NHK said.
日本公共广播NHK表示周日毗邻东京的茨城县发生5.5级强地震。
The quake, at around 10:23 (0123GMT), was also felt in Tokyo.
地震约在10：23 分(0123GMT)爆发，在东京也能感觉到震感。
There were no immediate reports of injuries or damage and no tsunami warning was issued. The US Geological Survey measured the quake with an initial magnitude of 5.2.
无伤亡或损毁的直接报道，也没有发出海啸警告。美国地质局初步监测此次地震为5.2级。
