| Magnitude | 4.1 |
| Region | EASTERN HONSHU, JAPAN |
| Date time | 2025-08-01 13:58:30.0 UTC |
| Location | 36.200 ; 139.500 |
| Depth | 100 km |
| Distance | 15 km SSE of Ashikaga, Japan / pop: 159,000 / local time: 22:58:30.0 2025-08-01 12 km NE of Kumagaya, Japan / pop: 155,000 / local time: 22:58:30.0 2025-08-01 |
Source parameters provided by:
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
All data providers for this event:
EMSC - CSLOC -- Arpajon, France (CSLC)Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
Further information can be found at:
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)