2.8
Earthquake Details: 15 km SE of Petrolia, California
Sep 3, 2026, 16:54:30
A magnitude 2.8 earthquake occurred near 15 km SE of Petrolia, California on Sep 3, 2026 at 16:54:30. The seismic event was recorded at a depth of 11.31 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth11.31 km
Significance119
Latitude40.2242
Longitude-124.1752
Event IDnc75429247
Magnitude2.8
Updated:Sep 3, 2026, 18:12:25 UTC
External Resources
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Time & depth
- Local time
- Sep 3, 2026, 09:54:30 PDT
- UTC
- Sep 3, 2026, 16:54:30 UTC
11.31 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 9
M1.88 km E of Vallejo, CaliforniaBeforeM1.93 km WSW of Tumalo, OregonBeforeM2.9233 km W of Ferndale, CaliforniaBeforeM2.34 km E of Challenge-Brownsville, CaliforniaBeforeM2.115 km W of Ukiah, CaliforniaBeforeM2.62 km N of Middletown, CaliforniaBeforeM3.04 km WSW of Hamilton city, CaliforniaBeforeM3.2196 km W of Port Orford, OregonBeforeM3.33 km ESE of Larkfield-Wikiup, CaliforniaAfter
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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: Sep 3, 2026, 18:12 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.