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Around 6:09 pm on the 20th, there was an earthquake with a maximum seismic intensity of more than 5 in Miyagi prefecture. According to the Japan Meteorological Agency, the epicenter is off the coast of Miyagi Prefecture (about 20 km northeast of the Oshika Peninsula) and the depth of the epicenter is 59 km. The magnitude of the earthquake is estimated to be magnitude (M) 6.9. The Japan Meteorological Agency issued a tsunami warning saying that a 1 meter tsunami was expected in the coastal area of the prefecture, but it was canceled after about 1 hour and 20 minutes. According to the agency, no clear tsunami was observed.
The announcement of the tsunami warning to Miyagi prefecture has passed approximately 4 years and 4 months since the tsunami warning and the warning issued for the earthquake in the epicenter of Fukushima prefecture on November 22, 2016.
According to the fire department, at least nine people were injured in Iwate and Miyagi prefectures due to falls. The breakdown is 4 from Sendai City, 2 from Ishinomaki City, 1 from Kesennuma City, 1 from Misato City, Miyagi Prefecture, and 1 from Morioka City.
A landslide occurred in Ashiguro-cho, Shiogama city, and dirt and sand blocked the city road. A fire broke out at the Shiomi-cho factory, Ishinomaki.
In Miyagi prefecture, eight cities and coastal towns such as Sendai, Shiogama, Watari and Shichigahama issued evacuation orders to residents on the tsunami alert, but all were lifted.
According to JR East, the Tohoku-Hokkaido line has suspended operation between Tokyo and Morioka. Conventional lines were canceled on the Tohoku, Sendai Airport Access, Joban, Sengoku and Sendai lines.
According to the Sendai City Transportation Office, the operation of the Nanboku Line and Tozai Line city subway was suspended on all lines. According to the East Nippon Expressway, some areas such as the Tohoku Expressway, the Sanriku Coastal Highway, the Ban-etsu Highway, and the Yamagata Highway have been closed.
According to Tohoku Electric Power Co., Inc., there are no abnormalities in the safety equipment of the Onagawa Nuclear Power Plant (Onagawa City, Miyagi Prefecture, Ishimaki City) and Higashidori Nuclear Power Plant (Village of Higashidori, Aomori Prefecture). From Shin-Sendai Thermal Power No. 3 (Sendai City) series, No. 3-1 running stopped automatically.
According to the Nuclear Regulatory Agency and Japan Nuclear Fuel Limited, TEPCO Fukushima No. 1 Central Nuclear Power Plant (Okuma Town, Fukushima Prefecture, Futaba Town), No. 2 Nuclear Power Plant (Naraha Town, Tomioka Town, Fukushima Prefecture), Used Nuclear Fuel reprocessing plant (Rokkasho village, Aomori prefecture), but no anomalies confirmed.
According to the Miyagi branch of the Tohoku power grid, a total of 350 households were without power in Miyagino District, Sendai City, Tome City, Kurihara City and Yamatomachi.
The following are the seismic intensities for each region where a seismic intensity of 3 or more was observed in Miyagi Prefecture.
Seismic intensity 5 higher = Sendai Miyagino, Ishinomaki Okaido Minami, Ishinomaki Momou, Iwanuma, Tomai Yoneyama, Tomai Minami, Higashi Matsushima, Osaki Matsuyama, Osaki Tajiri, Zao, Matsushima, Wakutani, Misato Kimazuiciseki Humi, lower 5 Iwanuma = intensity Ichism Seumich Sumita (Iwate) Sendai, Ishinomaki, Kesennuma, Natori, Okawara, Watari, Rifu, Minami Sanriku Shizugawa (Miyagi) Soma, Minami Soma Kashima, Okuma, Futaba, Namie, Shinchi, Iitate (Fukushima), etc. Seismic intensity 4 = Hachinohe Nango, Goto, Southern Tomomechi (Aomori) Morioka, Miyako, Hanamaki, Kamaishi (Iwate) Sendai Aoba, Sendai Taishiro, Shiogama, Shiraishi, Tagajo (Miyagi) Yokote Daio, Daisen (Akita) Yonezagata, Tendo , Koriyama, Iwaki, Inaeyo Chiyoda, Hirono, Kawauchi (Fukushima) Hitachi, Mango, Tokaimura (Ibaraki) Ichigai, Takanezawa, Nasu (Tochigi) Akiwa, Yuraku (Gunma) Saitama Chuo, Kasugabe (Mihama Hibino) Chiba Nakade (Chiba Nakade) -ku Yamabuki (Kanagawa) Agakase Junior High School (Niigata) Shinobu (Yamanashi) Minamimaki (Nagano) ▽ Seismic intensity 3 = Hakodate Shinhama (Hokkaido) Aomori (Aomori) Kuji, Nito (Iwate) Nanagajuku (Miyagi) Akita, Noshiro (Akitagi) Akita, Noshiro (Akitagi) ) Yamagata, Tsuruoka (Yamagi) Aizu Wakamatsu, Nishi Aizu (Fukushima), etc.
