4.0
Earthquake Details: 53 km from Pinotepa Nacional, Oaxaca, Mexico
8/18/2026, 1:57:37 AM
A magnitude 4.0 earthquake occurred near 53 km from Pinotepa Nacional, Oaxaca, Mexico on 8/18/2026 at 1:57:37 AM. The seismic event was recorded at a depth of -9.6 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Regional Seismicity
Technical Details
Depth-9.6 km
Significance0
Latitude16.7430
Longitude-98.3140
Event IDemsc:20260818_0000068
Magnitude4.0
Updated:8/18/2026, 2:22:16 AM
External Resources
View on EMSC Official SiteLoading map...
Time & depth
- Local time
- 8/17/2026, 7:57:37 PM CST
- UTC
- 8/18/2026, 1:57:37 AM UTC
-9.6 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M3.9off the coast of Chiapas, MexicoBeforeM4.0Offshore Oaxaca, MexicoBeforeM3.8Oaxaca, MexicoBeforeM3.8Oaxaca, MexicoBeforeM4.0Offshore Oaxaca, MexicoBeforeM4.2Offshore Chiapas, MexicoBeforeM4.2Offshore Guerrero, MexicoBeforeM4.1Offshore Guerrero, MexicoBeforeM4.0Oaxaca, MexicoBeforeM4.0Offshore Oaxaca, MexicoBeforeM4.0Veracruz, MexicoBeforeM3.8Offshore Oaxaca, MexicoBefore
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 18, 2026, 02:22 AM 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.