A moderate seismic event measuring 4.3 magnitude was recorded off the east coast of Chiba Prefecture, Japan. The tremor occurred on February 3, 2026, at 18:36 UTC.
Preliminary geophysical analysis places the hypocenter at a relatively shallow focal depth of 25.0 kilometers. The epicenter coordinates were calculated near 35.45 degrees North and 140.55 degrees East, positioning the seismic activity beneath the Pacific Ocean, slightly east of the main coastline.
This location is situated along a highly active tectonic boundary frequently subject to seismic movement. At the time the motion was registered, local weather conditions included scattered clouds, with the ambient temperature registered at 10.1 degrees Celsius.
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