1.6
Earthquake Details: 0 km WNW of Diablo, California, United States
Oct 31, 2026, 11:31:36
- Depth
- 15.43 km
- Felt reports
- No data
Source: USGSUpdated: Oct 31, 2026, 11:52 AM UTC
A magnitude 1.6 earthquake occurred on Oct 31, 2026 at 11:31:36. Epicenter: 0 km WNW of Diablo, California, United States. Reported depth: 15.43 km.
Tsunami information
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Time & depth
- Local time
- Oct 31, 2026, 04:31:36 PDT
- UTC
- Oct 31, 2026, 11:31:36 UTC
15.43 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
M4.010 km N of Lake Pillsbury, CABeforeM2.29 km N of Lake Pillsbury, CABeforeM2.612 km SW of Ridgemark, CABeforeM2.72 km NE of Pacifica, CABeforeM2.65 km WNW of Madera, CABeforeM2.712 km SW of Ridgemark, CABeforeM2.23 km S of East Shore, CABeforeM2.215 km SE of Lone Pine, CABeforeM2.410 km N of Lake Pillsbury, CABeforeM2.722 km SSW of Big Pine, CABeforeM2.929 km W of Petrolia, CABeforeM2.732 km SE of Bodie, CABefore
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 1.57
nc75460272
- Depth:
- 15.43 km
- Time:
- Updated:
- Oct 31, 2026, 11:52 AM UTC
Technical Details
Depth15.43 km
Significance38
Latitude37.8353
Longitude-121.9597
Event IDnc75460272
Magnitude1.6
Updated:Oct 31, 2026, 11:52:24 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 31, 2026, 11:52 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).