4.1
Earthquake Details: 135 km SE of Itoman, Japan
Sep 30, 2026, 17:59:20
- Depth
- 10 km
- Felt reports
- No data
Source: USGSUpdated: Oct 23, 2026, 09:47 PM UTC
A magnitude 4.1 earthquake occurred on Sep 30, 2026 at 17:59:20. Epicenter: 135 km SE of Itoman, Japan. Reported depth: 10 km.
Status: Reviewed
Tsunami information
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Time & depth
- Local time
- Oct 1, 2026, 02:59:20 GMT+9
- UTC
- Sep 30, 2026, 17:59:20 UTC
10 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 4.1
us6000u0sq
- Depth:
- 10 km
- Status:
- Reviewed
- Time:
- Updated:
- Oct 23, 2026, 09:47 PM UTC
Technical Details
Depth10 km
Significance259
Latitude25.1961
Longitude128.5386
Event IDus6000u0sq
Magnitude4.1
Updated:Oct 23, 2026, 21:47:39 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: Oct 23, 2026, 21:47 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).