2.1
Earthquake Details: 16 km WSW of Johannesburg, California, United States
Oct 4, 2026, 04:38:08
- Depth
- 6.8 km
- Felt reports
- No data
Source: USGSUpdated: Oct 4, 2026, 02:40 PM UTC
A magnitude 2.1 earthquake occurred on Oct 4, 2026 at 04:38:08. Epicenter: 16 km WSW of Johannesburg, California, United States. Reported depth: 6.8 km.
Status: Reviewed
Tsunami information
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Time & depth
- Local time
- Oct 3, 2026, 21:38:08 PDT
- UTC
- Oct 4, 2026, 04:38:08 UTC
6.8 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Nearby major cities
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSml 2.08
ci41342775
- Depth:
- 6.8 km
- Status:
- Reviewed
- Time:
- Updated:
- Oct 4, 2026, 02:40 PM UTC
Technical Details
Depth6.8 km
Significance67
Latitude35.3135
Longitude-117.7972
Event IDci41342775
Magnitude2.1
Updated:Oct 4, 2026, 14:40:50 UTC
Regional Seismicity
External Resources
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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: Oct 4, 2026, 14:40 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under 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.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).