SENDAI, JAPAN: A magnitude-7.1 aftershock has rattled Japan on the one-month anniversary of a massive earthquake that spawned a deadly tsunami.
The epicentre is close to the nuclear plant crippled by the tsunami a month ago. The US geological survey said the 7.1 magnitude onshore quake hit with a depth of just 10 kilometres (six miles), its epicentre 86 kilometres south-southeast of Fukushima city.
Japan's meteorological agency issued a tsunami warning saying a one-metre (three feet) wave could hit Ibaraki prefecture, the area worst hit by last month's massive tsunami.
A wave half a metre high was expected in Fukushima prefecture.
Narita airport temporarily closed a runway following the quake for safety checks.
The epicentre is close to the nuclear plant crippled by the tsunami a month ago. The US geological survey said the 7.1 magnitude onshore quake hit with a depth of just 10 kilometres (six miles), its epicentre 86 kilometres south-southeast of Fukushima city.
Japan's meteorological agency issued a tsunami warning saying a one-metre (three feet) wave could hit Ibaraki prefecture, the area worst hit by last month's massive tsunami.
A wave half a metre high was expected in Fukushima prefecture.
Narita airport temporarily closed a runway following the quake for safety checks.