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Strong Earthquake Rattles Japan; Tsunami Warning Issued

There's been a powerful earthquake off the North Central coast of Japan, near the same location of the 9.0-magnitude temblor on March 11 that set off a tsunami that pummeled cities along the coast, leaving thousands dead or missing.

That's the greatest magnitude of any quake in the area since that March 11 disaster.

The Japan Meteorological Agency has a issued tsunami warning — and says the wave's height could be about 2 meters — for part of the coast. A tsunami advisory has been issued for parts of the coast further from the epicenter. They should expect a wave about half a meter in height.

We'll keep updating this post as the story develops.

Update at 11:25 a.m. ET. Magnitude Now Put At 7.1:

After first saying it was a 7.4-magnitude earthquake, the U.S. Geological Survey is now saying it was a 7.1-magnitude temblor. It also puts the time of the quake at 10:32 a.m. ET — 11:32 p.m. local time in Japan.

Update at 11:17 a.m. ET. Power Company Says 'No Problem' At Crippled Nuclear Plant:

The latest from Kyodo News is that "no problem at all 6 reactors of Fukushima Dai-Ichi" nuclear power plant after this latest earthquake, according to Tokyo Electric Power Co.

Update at 11:12 a.m. ET. No Word Of New Problems At Nuclear Plant:

Kyodo News has posted this breaking news alert: "No extra abnormality at Fukushima Dai-Iichi plant as of 11:50 p.m."

That is the nuclear power plant where workers are still trying to deal with crippled reactors and radioactivity.

Update at 11:07 a.m. ET. Tsunami Arrival Times:

The Japan Meteorological Agency has "estimated tsunami arrival" times for places on the coast posted here. The times have passed in some locations — but are just coming up in Sendai-ko and Fukushima prefecture.

Update at 11:03 a.m. ET: The Japan Meteorological Agency's tsunami warning — which puts the tsunami height at up to 2 meters — is for the coast of Miyagi Prefecture. The lesser "tsunami advisories" cover Iwate, Fukushima and Ibaraki prefectures.

Update at 11:01 a.m. ET: From Tokyo, NPR's Greg Dixon reports that the shaking lasted for about 2 minutes. Japan's NHK is urging anyone along the coast in the region near the epicenter to head for higher ground, Greg adds. Copyright 2011 National Public Radio. To see more, visit

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