3.9
Earthquake Details: 15 km NNE of Alder Springs, CA
Jul 3, 2026, 01:39:10
A magnitude 3.9 earthquake occurred near 15 km NNE of Alder Springs, CA on Jul 3, 2026 at 01:39:10. The seismic event was recorded at a depth of 14.18 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth14.18 km
Significance229
Latitude39.7847
Longitude-122.6838
Event IDnc75388321
Magnitude3.9
Updated:Aug 5, 2026, 15:39:51 UTC
External Resources
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Time & depth
- Local time
- Jul 2, 2026, 18:39:10 PDT
- UTC
- Jul 3, 2026, 01:39:10 UTC
14.18 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
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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: Aug 5, 2026, 15:39 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.