Precursor M 3.9 before the 6.1
September 12, 2020 12:12
At around 11:44 am on the 12th, there were earthquakes observing shaking with a seismic intensity of 4 in various parts of Tohoku. There is no need to worry about the tsunami caused by this earthquake.
It was the observation of the shaking of seismic intensity 4
▽ Hashikami Town, Aomori Prefecture
▽ Morioka City, Ofunato City, Kitakami City, Tono City, Ichinoseki City, etc. in Iwate Prefecture, etc.
▽ It was Aoba Ward, Sendai City, Ishinomaki City, Kesennuma City, Iwanuma City, Tome City, etc. in Miyagi Prefecture.
In addition, shaking with seismic intensity 3 to 1 was observed in Tohoku, Hokkaido, Kanto Koshinetsu, Shizuoka prefecture, etc.
According to the observations of the J
apan Meteorological Agency, the epicenter is off the coast of Miyagi prefecture, the depth of the epicenter is 40 km, and the magnitude indicating the magnitude of the earthquake is estimated to be 6.1.
According to the disaster prevention management office in Ofunato City, Iwate Prefecture, which observed the shaking of seismic intensity 4, I felt a small rolling motion for a few seconds during the earthquake, but the materials and equipment did not fall from the shelves. is. Ofunato City has set up a disaster alert headquarters to collect information on damage caused by earthquakes.
Earthquake Early Warning announcement was not observed with seismic intensity 5 lower or higher
The Japan Meteorological Agency issued an Earthquake Early Warning saying that strong tremors are expected in Miyagi and Iwate prefectures, but no strong tremors with a seismic intensity of 5 lower or higher were observed. The Japan Meteorological Agency said,
"Earthquake Early Warning predicts shaking in a short time immediately after an earthquake, so there may be an error of about one step in seismic intensity, but when the breaking news comes out, please be wary of strong shaking." I am.