日本再度7.4级地震，海啸警报

A tsunami warning has been issued for north-eastern Japan after an earthquake with a magnitude of 7.4.
The tsunami is predicted to have a wave 1m (3ft) high. Those in the warning zone should move to high ground, Japanese TV said.
The area was ravaged by an earthquake and tsunami last month which severely damaged the Fukushima nuclear plant.
The quake struck 40km (28 miles) offshore, the AFP news agency said.

Three people have been killed and scores injured after a powerful aftershock struck north-east Japan.

Several buildings were destroyed and power was cut to 3.6 million homes.

It was the most powerful tremor since the 9.0-magnitude quake that triggered a devastating tsunami four weeks ago.

At the crippled Fukushima nuclear power station workers briefly retreated to a quake-proof shelter. The plant's operator later said there was no sign problems there were any worse.

The latest earthquake struck just before midnight on Thursday, at a depth of 49km (32 miles), close to the epicentre of the 11 March quake.

First reports said it had a magnitude of 7.4 but that was later revised to 7.1, according to the US Geological Survey (USGS).

A tsunami warning was lifted after about 90 minutes.

快讯：东北地区发生强烈地震

【日本新闻网4月7日消息】23时32分，东北地区发生强烈地震，东京震感强烈。气象厅已经发表海啸警报，海啸高度将有1米，或者超过。
初步震级：岩手县大部分地区6级，山形县5级，宫城县5级，青森县5级。地震范围覆盖整个东北地区。
日本气象厅说，这次地震的震源位于宫城县近海，深40米，最大震级为7.2级。

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由于日本把消息封锁了不少，没有更具体的咨询。。。