4.8
Earthquake Details: 58 km ESE of Koshima, Japan
Aug 29, 2026, 21:00:19
A magnitude 4.8 earthquake occurred near 58 km ESE of Koshima, Japan on Aug 29, 2026 at 21:00:19. The seismic event was recorded at a depth of 35 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth35 km
Significance354
Latitude29.9927
Longitude131.0784
Event IDus7000tcv5
Magnitude4.8
Updated:Aug 29, 2026, 21:56:50 UTC
External Resources
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Time & depth
- Local time
- Aug 30, 2026, 06:00:19 GMT+9
- UTC
- Aug 29, 2026, 21:00:19 UTC
35 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M2.9Kumamoto region, Kumamoto PrefectureBeforeM2.7Amakusa and Ashikita region, Kumamoto PrefectureBeforeM3.6off the west coast of Satsuma PeninsulaBeforeM3.6Kumamoto region, Kumamoto PrefectureBeforeM3.5Adjacent Sea of Amami-Oshima IslandAfterM3.1Amakusa and Ashikita region, Kumamoto PrefectureAfterM3.2Amakusa and Ashikita region, Kumamoto PrefectureAfterM2.9Central Kochi PrefectureAfterM4.0Hyuganada SeaAfterM2.8Amakusa and Ashikita region, Kumamoto PrefectureAfterM3.2Iyonada SeaAfterM3.2Amakusa and Ashikita region, Kumamoto PrefectureAfter
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Aug 29, 2026, 21:56 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. CC BY 4.0
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.