The Japan Meteorological Agency announced that at approximately 6:33 p.m. on June 30, a magnitude 5.1 earthquake occurred in the waters off the Tokara Islands in Kagoshima Prefecture, Kyushu, Japan. This area has recently experienced a series of small earthquakes.
The Meteorological Agency stated that there is no risk of a tsunami (seismic sea wave) resulting from the earthquake. The epicenter was located at latitude 29.40 degrees north and longitude 129.30 degrees east, with a depth of 30 kilometers.
Some islands experienced shaking equivalent to a lower 5 on the Japanese seismic intensity scale due to this earthquake.
Unlike magnitude, which indicates absolute strength, the Japanese seismic intensity scale is a relative concept that numerically expresses how people in the affected area feel the earthquake and the extent to which surrounding objects shake.
An intensity of lower 5 means that most people feel fear, and items such as dishes or books may fall from shelves.
According to the Yomiuri Shimbun, more than 650 earthquakes with an intensity of 1 or higher have occurred in the Tokara Islands over the ten-day period since June 21.
The Tokara Islands also experienced a series of more than 300 small earthquakes in both December 2021 and September 2023.
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