Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 3:06:27 PM (PST) on Sunday, December 21, 2025.
The magnitude 1.3 event occurred 15 km (9 miles) SSE of Livermore, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Sunday, December 21, 2025 at 3:06:27 PM (PST) Sunday, December 21, 2025 at 23:06:27 (UTC) |
| Distance from |
Livermore, CA - 15 km (9 miles) SSE (147 degrees) Pleasanton, CA - 20 km (12 miles) ESE (120 degrees) East Foothills, CA - 24 km (15 miles) NNE (30 degrees) Milpitas, CA - 26 km (16 miles) NE (52 degrees) Alum Rock, CA - 26 km (16 miles) NNE (30 degrees) |
| Coordinates | 37 deg. 34.3 min. N (37.571N), 121 deg. 40.7 min. W (121.678W) |
| Depth | 8.90 km (5.50 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=4, Nph=4, Dmin=33.4 km, Rmss=0.16 sec, Erho=11.78 km, Erzz=3.74000001 km, Gp=223 degrees |
| Event ID# | nc75284426 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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