3.9
Earthquake Details: 6 km NW of Pinnacles, California, United States
8/11/2026, 10:19:08 AM
A magnitude 3.9 earthquake occurred near 6 km NW of Pinnacles, California, United States on 8/11/2026 at 10:19:08 AM. The seismic event was recorded at a depth of 4.62 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Regional Seismicity
Technical Details
Depth4.62 km
Significance253
Latitude36.5778
Longitude-121.1823
Event IDnc75415717
Magnitude3.9
Updated:8/12/2026, 10:26:17 AM
External Resources
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Time & depth
- Local time
- 8/11/2026, 3:19:08 AM PDT
- UTC
- 8/11/2026, 10:19:08 AM UTC
4.62 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M2.831 km NNW of Covelo, California, United StatesAfterM3.83 km N of San Leandro, California, United StatesAfterM2.84 km N of San Leandro, California, United StatesAfterM2.74 km S of Petrolia, California, United StatesAfterM3.419 km SW of Toms Place, California, United StatesAfterM2.712 km NNE of Trabuco Canyon, California, United StatesAfterM2.67 km SW of Atascadero, California, United StatesAfterM2.810 km ENE of Coso Junction, California, United StatesAfterM2.86 km SE of Ontario, California, United StatesAfterM2.63 km SE of Concord, California, United StatesAfterM2.712 km S of Lompoc, California, United StatesAfterM2.512 km SSW of Lompoc, California, United StatesAfter
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 12, 2026, 10:26 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.