3.3
Earthquake Details: 27 km WSW of Westley, California
Sep 27, 2026, 14:21:50
A magnitude 3.3 earthquake occurred near 27 km WSW of Westley, California on Sep 27, 2026 at 14:21:50. The seismic event was recorded at a depth of 3.37 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth3.37 km
Significance173
Latitude37.4158
Longitude-121.4527
Event IDnc75443097
Magnitude3.3
Updated:Sep 28, 2026, 15:12:53 UTC
External Resources
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Time & depth
- Local time
- Sep 27, 2026, 07:21:50 PDT
- UTC
- Sep 27, 2026, 14:21:50 UTC
3.37 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 11
M2.71 km S of Orange Cove, CaliforniaBeforeM2.5central CaliforniaBeforeM3.96 km SSW of Philo, CaliforniaBeforeM3.710 km W of Boonville, CaliforniaBeforeM2.710 km W of Boonville, CaliforniaBeforeM2.626 km WSW of Westley, CaliforniaAfterM3.57 km WSW of Hermosa Beach, CaliforniaAfterM2.69 km NW of Redwood Valley, CaliforniaAfterM4.797 km W of Petrolia, CaliforniaAfterM2.52 km SSW of Round Valley, CaliforniaAfterM2.66 km W of Yountville, 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 28, 2026, 15:12 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.