| Magnitude | 4.4 |
| Region | NEAR WEST COAST OF HONSHU, JAPAN |
| Date time | 2026-05-31 20:54:40.7 UTC |
| Location | 37.424 ; 138.042 |
| Depth | 23 km |
| Distance | 87 km NNW of Nagano, Japan / pop: 360,000 / local time: 05:54:40.7 2026-06-01 35 km NW of Jōetsu, Japan / pop: 204,000 / local time: 05:54:40.7 2026-06-01 |
Source parameters reviewed by a seismologist
All data providers for this event:
HUN-REN EPSS Kövesligethy Radó Seismological Observato -- Budapest, Hungary (BUD)GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)
Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
EMSC -- Arpajon, France (SC4)
Further information can be found at:
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)Japan Meteorological Agency Seismic Network -- Tokyo, Japan (JMA)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)