25.10.2026 10:02
An earthquake of magnitude 7 occurred at a depth of 470 kilometers off the west of the Ogasawara Islands in Japan. The Japan Meteorological Agency (JMA) announced that there was no tsunami risk after the earthquake. According to the country's Japanese seismic intensity scale, the highest intensity was measured as 3 on the islands of Chichijima and Hahajima. The tremor was felt over a wide area from the Kanto region to the Tohoku region, including the capital Tokyo.
A deep-focus earthquake off the Ogasawara Islands south of Japan was also felt in areas about 1000 kilometers from its epicenter. No casualties or damage were reported in the earthquake.
RECORDED AT A DEPTH OF 470 KILOMETERS
According to the JMA, the earthquake occurred off the western coast of the Ogasawara Islands at around 11:10 local time. The magnitude of the earthquake was determined to be 7 and its depth about 470 kilometers. The epicenter was reported to be at 28 degrees north latitude and 139.9 degrees east longitude.
The U.S. Geological Survey (USGS) and the European-Mediterranean Seismological Centre (EMSC) recorded the earthquake's magnitude as 6.5 and its depth as 492 kilometers. The USGS issued a "green" alert level for the earthquake, stating that the probability of casualties and damage was low.
FELT FROM TOKYO TO AOMORI
According to the Japanese seismic intensity scale, the highest intensity, 3, was measured on Chichijima and Hahajima islands in Ogasawara village, Tokyo. In a wide area extending from the Kanto region to southern Tohoku, the intensity was recorded as 2, and in some parts of Tohoku, including Aomori, as 1. The earthquake was felt in Tokyo as well as in Miyagi, Yamagata, Fukushima, Ibaraki, and Tochigi. In Kakuda, Iwanuma, and Marumori in Miyagi, the intensity was measured as 2.
According to the Japanese weather company Weathernews, in deep-focus earthquakes, shaking can be transmitted along the subducting oceanic plate and felt more strongly in areas far from the epicenter. Because of this effect, called the "abnormal shaking area," the earthquake was reported to have been felt in the Tohoku region in the northeast as well.
NO TSUNAMI THREAT
The JMA announced that there was no tsunami threat after the earthquake. The U.S. National Tsunami Warning Center also announced that no tsunami was expected due to the earthquake's depth.
FIRST TIME IN 11 YEARS
According to Weathernews data, an earthquake of magnitude 7 or higher occurred in the region for the first time since the magnitude 8.1 earthquake that occurred in 2015. In the region, an intensity of 3 or higher had last been recorded in a deep-focus earthquake in July 2024.