Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT 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 explosion occurred at 5:01:10 PM (PDT) on Thursday, September 11, 2025.
The magnitude 1.6 event occurred 5 km (3 miles) ENE (68 degrees) of El Granada, CA.
The hypocentral depth is -0.19 km (-0.10 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Thursday, September 11, 2025 at 5:01:10 PM (PDT) Friday, September 12, 2025 at 0:01:10 (UTC) |
| Distance from |
El Granada, CA - 5 km (3 miles) ENE (68 degrees) Half Moon Bay, CA - 6 km (4 miles) N (9 degrees) Highlands-Baywood Park, CA - 6 km (4 miles) W (266 degrees) Hillsborough, CA - 7 km (4 miles) SSW (208 degrees) Burlingame, CA - 9 km (5 miles) SSW (212 degrees) |
| Coordinates | 37 deg. 31.2 min. N (37.519N), 122 deg. 25.0 min. W (122.417W) |
| Depth | -0.19 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=2.3 km, Rmss=0.07 sec, Erho=0.2 km, Erzz=31.61 km, Gp=68 degrees |
| Event ID# | nc75236647 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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