4.0 moderate series.

Mar, September 9, 2025, 00:10 | By: treathquakemonitor

An earthquake of 4.0 intermediate magnitude was reported in the morning near Kisarazu, Kisarazu Shi, Chiba, Japan.
According to the European-Mediterranean seismological center (EMSC), the earthquake struck Tuesday, September 9, 2025, at 8:53 a.m., local time at an intermediate depth of 70 km. The exact magnitude, epicenter and depth of the earthquake could be revised in the coming hours or minutes while seismologists examine the data and refine their calculations, or other agencies publish their report.
Our surveillance service identified a second report from the National Institute for Research in Japan for the resilience of science and disasters in Japan (NIED) which listed the earthquake to magnitude 4.3. A third agency, the Citizen-Seismograph Network of Raspberrykes, reported the same earthquake to magnitude 4.0.
Cities or cities near the epicenter where the Mamight earthquake felt like very weak tremors include Sodegaura (pop. 64,900) located 2 km from the epicenter, Kisarazu (pop. 136 200) 6 km away, Ichihara (pop. 283,500) at 15 km, pop. 88,300) at 27 km, Payasu (pop. 32 km, Yokohama (pop. 3,761,600) at 32 km, and Tokyo (pop. 8.336 600) at 43 km.

Earthquake data:

I felt this earthquake

Date and time: September 9, 2025 08:53 (GMT +9) Local time (September 8, 2025 23:53 GMT)
Maîtrité: 4.0
Depth: 70.00 km
Epicenter latitude / Longitude: 35.4 ° N / 140 ° E (Sodegaura-Shi, Chiba, Japan)
Primary data source: EMSC