4.1
Earthquake Details: 256 km WNW of Houma, Tonga
Sep 17, 2026, 19:22:37
- Depth
- 422.654 km
- Felt reports
- No data
Source: USGSUpdated: Oct 1, 2026, 03:10 PM UTC
A magnitude 4.1 earthquake occurred on Sep 17, 2026 at 19:22:37. Epicenter: 256 km WNW of Houma, Tonga. Reported depth: 422.654 km.
Status: Reviewed
Tsunami information
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Time & depth
- Local time
- Sep 17, 2026, 07:22:37 GMT-12
- UTC
- Sep 17, 2026, 19:22:37 UTC
422.654 km · Deep-focus
More than 300 km deep. Deep earthquakes can be felt across a wide area.
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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
us7000tiwb
- Depth:
- 422.65 km
- Status:
- Reviewed
- Time:
- Updated:
- Oct 1, 2026, 03:10 PM UTC
Technical Details
Depth422.654 km
Significance259
Latitude-20.3719
Longitude-177.6181
Event IDus7000tiwb
Magnitude4.1
Updated:Oct 1, 2026, 15:10:02 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 1, 2026, 15:10 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).