Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 10:24:57 AM (PDT) on Tuesday, September 30, 2025.
The magnitude 1.0 event occurred 19 km (12 miles) SE of Livermore, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Tuesday, September 30, 2025 at 10:24:57 AM (PDT) Tuesday, September 30, 2025 at 17:24:57 (UTC) |
| Distance from |
Livermore, CA - 19 km (12 miles) SE (125 degrees) Mountain House, CA - 23 km (14 miles) S (190 degrees) Tracy, CA - 23 km (14 miles) SW (220 degrees) Pleasanton, CA - 27 km (17 miles) ESE (109 degrees) East Foothills, CA - 30 km (19 miles) NE (42 degrees) |
| Coordinates | 37 deg. 35.0 min. N (37.584N), 121 deg. 35.4 min. W (121.589W) |
| Depth | 8.60 km (5.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=13, Nph=14, Dmin=3.4 km, Rmss=0.06 sec, Erho=0.31 km, Erzz=0.69 km, Gp=84 degrees |
| Event ID# | nc75243061 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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