1.7
Earthquake Details: 13 km SW of Chester, California, United States
Oct 29, 2026, 10:15:31
- Depth
- 0.22 km
- Felt reports
- No data
Source: USGSUpdated: Oct 29, 2026, 10:47 AM UTC
A magnitude 1.7 earthquake occurred on Oct 29, 2026 at 10:15:31. Epicenter: 13 km SW of Chester, California, United States. Reported depth: 0.22 km.
Tsunami information
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Time & depth
- Local time
- Oct 29, 2026, 03:15:31 PDT
- UTC
- Oct 29, 2026, 10:15:31 UTC
0.22 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Nearby major cities
Nearby earthquakes · 12
M2.54 km SE of Aromas, CABeforeM2.614 km E of Seven Trees, CABeforeM2.8236 km W of Ferndale, CaliforniaBeforeM4.010 km N of Lake Pillsbury, CABeforeM2.612 km SW of Ridgemark, CABeforeM2.72 km NE of Pacifica, CABeforeM2.65 km WNW of Madera, CAAfterM2.712 km SW of Ridgemark, CAAfterM2.410 km N of Lake Pillsbury, CAAfterM2.722 km SSW of Big Pine, CAAfterM2.929 km W of Petrolia, CAAfterM2.732 km SE of Bodie, CAAfter
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 1.74
nc75459332
- Depth:
- 0.22 km
- Time:
- Updated:
- Oct 29, 2026, 10:47 AM UTC
Technical Details
Depth0.22 km
Significance47
Latitude40.2227
Longitude-121.3367
Event IDnc75459332
Magnitude1.7
Updated:Oct 29, 2026, 10:47:26 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 29, 2026, 10:47 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).