At around 4:33 a.m. on the 19th, there was an earthquake with a seismic intensity of 4 in Iwate, Miyagi, and Fukushima prefectures. There is no need to worry about a tsunami from this earthquake.
The seismic intensity in each area is
▼Seismic intensity 4 was recorded in Ichinoseki City, Iwate Prefecture, Ishinomaki City, Miyagi Prefecture, Tome City, Higashi Matsushima City, Matsushima Town, Wakuya Town, Misato Town, and Tamura City, Fukushima Prefecture.
▼Seismic intensity 3
▽Ofunato City, Rikuzentakata City, Kamaishi City, Oshu City, Sumita Town in Iwate Prefecture,
▽Miyagi Prefecture’s Aoba Ward, Sendai City, Miyagino Ward, Sendai City, Wakabayashi Ward, Sendai City, Shiogama City, Kesennuma City, Natori City, Kakuda City, Tagajo City, Iwanuma City, Kurihara City, Osaki City, Zao Town, Okawara Town, and Villages Tamachi, Shibata Town, Kawasaki Town, Marumori Town, Watari Town, Yamamoto Town, Shichigahama Town, Rifu Town, Yamato Town, Osato Town, Ohira Village, Onagawa Town, Minamisanriku Town, ▽Fukushima City, Iwaki City, Soma in Fukushima Prefecture They were Nihonmatsu City, Minamisoma City, Date City, Motomiya City, Kunimi Town, Tenei Village, Tamagawa Village, Naraha Town, Tomioka Town, Okuma Town, Futaba Town, Namie Town, Shinchi Town, and Iitate Village.
In addition, tremors with a seismic intensity of 2 or 1 were observed across a wide area, including the Tohoku and Kanto regions.
According to observations by the Japan Meteorological Agency, the epicenter was estimated to be off the coast of Miyagi Prefecture, at a depth of 60 km, and with a magnitude of 5.5.
Miyagi Prefecture: Long-period earthquake motion “class 1” observed
An earthquake with a seismic intensity of 4 was observed in Iwate, Miyagi, and Fukushima prefectures around 4:33 a.m. on the 19th, and in Miyagi prefecture, long, slow shaking, class 1 long-period ground motion was observed.
Tremors in “Class 1”, the smallest of the four classes, were observed in Tome City and Wakuya Town in Miyagi Prefecture.
Long-period ground motion is large, slow shaking with a period of more than 2 seconds that occurs in large-scale earthquakes, and is particularly effective in high-rise buildings.
The Japan Meteorological Agency says that a class 1 tremor is a “moderately large tremor” that will be felt by most people indoors in tall buildings, and will cause hanging objects such as blinds to sway.
Earthquake intensity 4 Miyagi Ishinomaki Shaking as if rising from below
In a two-story wooden house in Ishinomaki City, Miyagi Prefecture, where an earthquake of magnitude 4 was observed, the tremor started as if it were shaking upwards from below, and then the horizontal shaking continued for several tens of seconds, causing the cosmetics and other items on the shelves to be destroyed. fell to the floor.
Earthquake intensity 4 Iwate Ichinoseki A creaking sound coming from the building for about 3 seconds
A security guard at Ichinoseki City Hall in Iwate Prefecture, which observed the earthquake with an intensity of 4, said, “I was on the first floor of the city hall when I heard a creaking sound coming from the building for about 3 seconds. , there was a short lateral tremor. There is no power outage, and other security guards are patrolling the building, but so far we have not received any reports of any abnormalities or damage.”
Tags: Earthquake seismic intensity Iwate Miyagi Fukushima worries tsunami NHK
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