After 5:30 pm on the 9th, there was an earthquake whose epicenter was very deep in Ise Bay, and we observed shaking with seismic intensity 2 and 1 over a wide area in Tohoku and Kanto.
There is no concern about the tsunami caused by this earthquake, and the Japan Meteorological Agency says that the epicenter is very deep, so it is a phenomenon called "abnormal seismic zone" where shaking is observed over a wide area away from the epicenter.
According to the Japan Meteorological Agency, there was a magnitude 5.1 earthquake with an epicenter at a depth of 340 km in Ise Bay at around 5:33 pm on the 9th.
In addition to observing shaking with seismic intensity 2 in Chiyoda Ward, Tokyo, Shirakawa City, Fukushima Prefecture, Mito City, Utsunomiya City, etc., we also observed shaking with seismic intensity 1 in a wide range of Tohoku and Kanto.
According to the Japan Meteorological Agency, this earthquake seems to have occurred inside the Pacific plate subducting from the east under the Japanese archipelago, and the epicenter of the earthquake was transmitted inside the subducting plate. It seems that it shook in the Kanto and Tohoku regions far away from.
The spread of seismic intensity distribution in areas far from the epicenter is called the "abnormal seismic zone".
It is not that the earthquake itself is abnormal, but similar phenomena have been confirmed so far.