No emergency situations have been recorded at the plant's nuclear facilities, the Fukui prefecture Security Committee said.
A tsunami threat has been issued for all the western coast of Japan from the northern island of Hokkaido to the southern island of Kyushu while a threat of the great tsunami has been declared in the Ishikawa prefecture after a number of the earthquakes, the agency reported.
Starting from 16:06 local time (07:06 GMT), nine earthquakes with magnitudes ranging from 4.3 to 7.6 took place in the area of Ishikawa and Niigata prefectures.