| Magnitude | 4.5 |
| Region | EASTERN HONSHU, JAPAN |
| Date time | 2025-04-21 13:11:17.7 UTC |
| Location | 36.017 ; 139.795 |
| Depth | 110 km |
| Distance | 17 km NE of Saitama, Japan / pop: 1,193,000 / local time: 22:11:17.7 2025-04-21 14 km N of Koshigaya, Japan / pop: 317,000 / local time: 22:11:17.7 2025-04-21 |
Source parameters reviewed by a seismologist
All data providers for this event:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)Geophysical Survey of the Russian Academy of Sciences -- Obninsk, Russia (GSRAS)
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
Ukrainian NDC, Main Center of Special Monitoring -- Kyiv, Ukraine (MCSM)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
The research institute NORSAR -- Kjeller, Norway (NORSAR)
EMSC -- Arpajon, France (SC4)
Further information can be found at:
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)