| Magnitude | 4.9 |
| Region | EASTERN HONSHU, JAPAN |
| Date time | 2026-04-18 05:54:31.2 UTC |
| Location | 36.630 ; 137.858 |
| Depth | 11 km |
| Distance | 29 km WSW of Nagano, Japan / pop: 360,000 / local time: 14:54:31.2 2026-04-18 14 km NNW of Ōmachi, Japan / pop: 30,500 / local time: 14:54:31.2 2026-04-18 |
Source parameters reviewed by a seismologist
All data providers for this event:
HUN-REN EPSS Kövesligethy Radó Seismological Observato -- Budapest, Hungary (BUD)Badan Meteorologi, Klimatologi dan Geofisika -- Jakarta, Indonesia (BMKG)
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)
Geophysical Survey of the Russian Academy of Sciences -- Obninsk, Russia (GSRAS)
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
Kandilli Observatory and Earthquake Research Institute -- Istanbul, Türkiye (KOERI)
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:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)