The earthquake registered 6.7 and was 130 kilometres (81 miles) off the city of Kuji in Iwate prefecture.
TOKYO: A 6.7-magnitude earthquake struck off northern Japan on Friday, according to the weather service, just days after a 7.5-magnitude tremor in the same area injured at least 50 people.
The Japan Meteorological Agency (JMA) increased its initial magnitude estimate of 6.5 and warned that tsunami waves of high to one metre (three feet) might hit the northern Pacific coastline.
The United States Geological Survey (USGS) also reported that the quake magnitude 6.7 and occurred 130 kilometres (81 miles) off the city of Kuji in Iwate prefecture on the main island of Honshu.
According to NHK, the shaking was less intense than the larger tremor that struck late Monday, knocking products off shelves, tearing apart roads, smashing windows, and triggering tsunami waves of up to 70 cm. The Nuclear Regulation Authority reported Friday that there were no initial evidence of irregularities at the region’s nuclear facilities.
Following Monday’s jolt, the JMA issued an unusual special advisory, warning that another quake of similar or larger magnitude was conceivable for another week.