4.2
Earthquake Details: 4 km SE of San Ramon, CA
Feb 2, 2026, 15:01:13
A magnitude 4.2 earthquake occurred near 4 km SE of San Ramon, CA on Feb 2, 2026 at 15:01:13. The seismic event was recorded at a depth of 9.56 km. A tsunami warning was issued for this event.
Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth9.56 km
Significance729
Latitude37.7563
Longitude-121.9437
Event IDnc75305736
Magnitude4.2
Updated:Aug 24, 2026, 15:11:22 UTC
External Resources
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Time & depth
- Local time
- Feb 2, 2026, 07:01:13 PST
- UTC
- Feb 2, 2026, 15:01:13 UTC
9.56 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 24, 2026, 15:11 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.