Tsunami warning as Japan reports earthquake
A strong earthquake has shaken northern Japan, and regional tsunami advisories have been issued.
The Japan Meteorological Agency said the quake was 6.8 preliminary magnitude. A tsunami of about half a metre is expected for Aomori and Iwate prefectures.
Iwate was in the region heavily damaged by last year's earthquake and tsunami.
The epicentre was about 146 miles south of Kushiro, on Hokkaido, Japan’s northern island.
It was a relatively shallow 16 miles from the ocean floor.
The Pacific Tsunami Warning Centre in Hawaii said there was no threat there or across the Pacific.
