Magnitude-5.7 quake strikes eastern Japan: USGS

Posted at 03/14/2012 8:54 PM | Updated as of 03/14/2012 8:54 PM

TOKYO - A magnitude-5.7 earthquake struck east of Tokyo late Wednesday, but no tsunami warning was issued, US authorities said.

The quake, which occurred at 9:05 p.m. (1205 GMT) off Chiba prefecture in the Pacific, came hours after another strong earthquake rocked northeastern Japan, triggering small tsunami waves.

The US Geological Survey rated the latest jolt's magnitude at 5.7, but Japan's meteorological agency had earlier measured it as 6.1.

The Japanese agency said there was no fear of a tsunami following the latest quake "although sea levels may change slightly in a few hours".

The series of quakes Wednesday come almost a year to the day after a 9.0-magnitude earthquake triggered a monster tsunami that killed more than 19,000 people and crippled Japan's Fukushima nuclear plant.

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