[Update 12:06 p.m. ET, 1:06 a.m. Friday in Japan] The tsunami warning and advisories for Japan have been lifted, public broadcaster NHK reported.

[Update 11:20 a.m. ET, 12:20 a.m. Friday in Japan] Workers evacuated the Fukushima Daiichi nuclear plant following an earthquake Thursday, Tokyo Electric Power Co. said. TEPCO has communication with the plant and the power is still on. There were no immediate reports of damage.

The U.S. Geological Survey downgraded the magnitude of the latest Japan earthquake to 7.1; the quake had been given a preliminary magnitude of 7.4.

[Posted 10:57 a.m. ET, 11:57 p.m. in Japan] A magnitude-7.4 earthquake struck Japan on Thursday, the Japan Meteorological Agency said. The epicenter was off the coast of Miyagi Prefecture.

Public broadcaster NHK reported a tsunami warning for Miyagi, saying people in the area should evacuate from the shore to a safe place.

NHK also reported a tsunami advisory for Iwate Prefecture, saying a tsunami is expected to arrive in coastal regions there as well.

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