2.3
Earthquake Details: 5 km SSW of Alameda, CA
Aug 21, 2026, 11:38:49
A magnitude 2.3 earthquake occurred near 5 km SSW of Alameda, CA on Aug 21, 2026 at 11:38:49. The seismic event was recorded at a depth of 18.17 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth18.17 km
Significance85
Latitude37.7248
Longitude-122.2613
Event IDnc75422342
Magnitude2.3
Updated:Aug 22, 2026, 04:44:41 UTC
External Resources
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Time & depth
- Local time
- Aug 21, 2026, 04:38:49 PDT
- UTC
- Aug 21, 2026, 11:38:49 UTC
18.17 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M3.010 km ENE of Coso Junction, CAAfterM3.310 km ENE of Coso Junction, CAAfterM2.84 km NW of Parkfield, CAAfterM4.010 km ENE of Coso Junction, CAAfterM3.410 km ENE of Coso Junction, CAAfterM3.510 km ENE of Coso Junction, CAAfterM2.810 km N of Lake Pillsbury, CAAfterM2.710 km ENE of Coso Junction, CAAfterM2.74 km W of Walker, CAAfterM2.819 km SW of Toms Place, CAAfterM2.919 km SW of Toms Place, CAAfterM2.717 km SSE of Shandon, CAAfter
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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 22, 2026, 04:44 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.