4.3
Earthquake Details: 213 km WSW of Houma, Tonga
Oct 18, 2026, 15:39:40
- Depth
- 271.23 km
- Felt reports
- No data
Source: USGSUpdated: Oct 18, 2026, 06:18 PM UTC
A magnitude 4.3 earthquake occurred on Oct 18, 2026 at 15:39:40. Epicenter: 213 km WSW of Houma, Tonga. Reported depth: 271.23 km.
Tsunami information
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Time & depth
- Local time
- Oct 18, 2026, 03:39:40 GMT-12
- UTC
- Oct 18, 2026, 15:39:40 UTC
271.23 km · Intermediate-focus
Between 70 and 300 km deep.
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Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 4.3
us6000u36h
- Depth:
- 271.23 km
- Time:
- Updated:
- Oct 18, 2026, 06:18 PM UTC
Technical Details
Depth271.23 km
Significance284
Latitude-21.6837
Longitude-177.2893
Event IDus6000u36h
Magnitude4.3
Updated:Oct 18, 2026, 18:18:27 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 18, 2026, 18:18 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.