Japan’s Fukushima region was struck by a magnitude 7.1 earthquake on Saturday, creating small waves that hit three cities under a tsunami warning.
The Japan Meteorological Agency, which canceled the advisory, said that the first waves hit Soma, Kamaishi, and Ishinomaki-shi Ayukama, but that none reached the height of 1 meter, the threshold for issuing a stronger warning.
No injuries or damage were reported after the quake that was described by the agency as an aftershock of the major earthquake that hit Japan in March 2011, killing around 19,000 people and destroying one of the Fukushima nuclear plants.
The epicenter of the 2:10 a.m. quake was located around 370 kilometers east of Japan’s Honshu Island at a depth of around 10 kilometers. The tremor was felt around 480 kilometers away in Tokyo, according to the international press.
U.S. Geological Service said the quake was caused by “normal faulting in the shallow oceanic crust of the Pacific plate.”
The Kyodo news agency reported that a woman in her 60s hurt her head and back when she was knocked out of bed at her home in Miyako, Iwate Prefecture.
Fukushima Prefecture’s residents were warned by the Japan Meteorological Agency to “get out of the water and leave the coast immediately.” The warning was later expanded to include Iwate, Miyagi, Ibaraki, and Chiba Prefectures.