April 7, 2011
Japan's northeastern coast has been rattled by a strong aftershock. The Japan meteorological agency has issued a tsunami warning for a wave of up to one meter. The warning was issued for a coastal area already ravaged by last month's tsunami.
Officials say the quake was a 7.1-magnitude and hit 25 miles (40 kilometers) under the water and off the coast of Miyagi prefecture. The quake that preceded last month's tsunami was a 9.0-magnitude.
Buildings as far away as Tokyo shook for about a minute.
Officials at Japan's tsunami-ravaged nuclear plant say there's no immediate sign of new problems after the aftershock.
A nuclear safety official says the workers at the Fukushima Daiichi plant are safe but does not know if they have been evacuated.
The metereorological agency issued tsunami warnings and advisories for a stretch of more than 300 miles of the northeastern
coast from Aomori prefecture in the north to Ibaraki prefecture in central Japan, just north of Tokyo.
Announcers on Japan's public broadcaster NHK told coastal residents to run to higher ground and away from the shore.