RSS feed source: USGS Earthquake Hazards Program

Fri, 24 Oct 2025, 06:58 | BY: EARTHQUAKEMONITOR

A magnitude 4.0 earthquake near Inzai, Inzai-shi, Chiba, Japan, was reported only 10 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at an intermediate depth of 70. km beneath the epicenter early afternoon on Friday, October 24th, 2025, at 3:47 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by Japan’s National Research Institute for Earth Science and Disaster Resilience (NIED), which listed it as a magnitude 4.3 earthquake. A third agency, the citizen-seismograph network of RaspberryShake, reported the same quake at magnitude 4.0.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Shiroi (pop. 62,400) located 3 km from the epicenter, Inzai (pop. 105,500) 7 km away, Yachiyo (pop. 199,500) 8 km away, Kamagaya (pop. 109,900) 9 km away, Abiko (pop. 131,800) 11 km away, Kashiwa (pop. 433,400) 13 km away, Narashino (pop. 176,200) 14 km away, Chiba (pop. 979,800) 22 km away, Tokyo (pop. 8,336,600) 39 km away, and Yokohama (pop. 3,761,600) 58 km away.

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RSS feed source: USGS Earthquake Hazards Program

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RSS feed source: USGS Earthquake Hazards Program

Date and TimeMag
DepthDistanceLocationDetailsMap Oct 16, 07:53 pm (GMT +9)

3.0

59 km75 km (47 mi) to the SE North Pacific Ocean, 18 km southeast of Isumi, Chiba, Japan

Info

Oct 16, 02:55 pm (GMT +9)

3.4

101 km54 km (34 mi) to the SW 3.9 km north of Yokohama, Kanagawa, Japan  I FELT IT

Info

Oct 14, 05:02 pm (GMT +9)

3.0

71 km63 km (39 mi) to the SW North Pacific Ocean, 3.2 km north of Yokosuka, Kanagawa, Japan

Info

Oct 13, 08:16 pm (GMT +9)

3.1

163 km68 km (42 mi) to the SW Japan: Kanagawa Pref

Info

Oct 13, 01:53 am (GMT +9)

3.0

68 km104 km (64 mi) to the S North Pacific Ocean, 27 km southeast of Tateyama, Chiba, Japan

Info

May 26, 2023 07:03 pm (GMT +9)

6.1

42 km41 km (26 mi) to the SE North Pacific Ocean, 15 km east of Togane, Chiba, Japan 259 reportsInfoMar 16, 2022 11:36 pm (GMT +9)

7.3

41 km256 km (159 mi) to the NE North Pacific Ocean, 67 km south of Tashiro Jima Island, Miyagi, Japan 101 reportsInfoOct 7, 2021 10:41 pm (GMT +9)

5.9

63 km28 km (17 mi) to the S 14 km south of Chiba, Chiba, Japan 326 reportsInfoFeb 13, 2021 11:07 pm (GMT +9)

7.0

56 km258 km (160 mi) to the NE Near East Coast of Honshu, Japan 472 reportsInfoJul 7, 2018 08:23 pm (GMT +9)

5.8

50 km87 km (54 mi) to the SE North Pacific Ocean, 30 km southeast of Ohara, Chiba, Japan 66 reportsInfoMar 14, 2012 09:05 pm (GMT +9)

6.0

10 km50 km (31 mi) to the E North Pacific Ocean, 5.3 km southeast of Asahi, Chiba, Japan

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