4.7
Earthquake Details: 10 km W of Onna, Japan
Aug 21, 2026, 00:01:20
- Depth
- 42.689 km
- Felt reports
- 1
Source: USGSUpdated: Sep 14, 2026, 01:22 AM UTC
A magnitude 4.7 earthquake occurred on Aug 21, 2026 at 00:01:20. Epicenter: 10 km W of Onna, Japan. Reported depth: 42.689 km.
Status: Reviewed
Tsunami information
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Time & depth
- Local time
- Aug 21, 2026, 09:01:20 GMT+9
- UTC
- Aug 21, 2026, 00:01:20 UTC
42.689 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Nearby major cities
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSmb 4.7
us6000tmc4
- Depth:
- 42.69 km
- Status:
- Reviewed
- Time:
- Updated:
- Sep 14, 2026, 01:22 AM UTC
Technical Details
Depth42.689 km
Significance340
Latitude26.5040
Longitude127.7470
Event IDus6000tmc4
Magnitude4.7
Updated:Sep 14, 2026, 01:22:30 UTC
Regional Seismicity
External Resources
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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: Sep 14, 2026, 01:22 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under 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.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).