Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 7:02:53 AM (PDT) on Friday, March 28, 2025.
The magnitude 1.6 event occurred 4 km (2 miles) SE of Rowland Heights, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 1.6 - local magnitude (Ml) |
| Time | Friday, March 28, 2025 at 7:02:53 AM (PDT) Friday, March 28, 2025 at 14:02:53 (UTC) |
| Distance from |
Rowland Heights, CA - 4 km (2 miles) SE (137 degrees) Brea, CA - 4 km (3 miles) NNE (31 degrees) La Habra Heights, CA - 7 km (4 miles) E (100 degrees) La Habra, CA - 7 km (4 miles) ENE (73 degrees) South San Jose Hills, CA - 7 km (5 miles) SSE (159 degrees) |
| Coordinates | 33 deg. 57.0 min. N (33.950N), 117 deg. 52.5 min. W (117.876W) |
| Depth | 8.64 km (5.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=42, Nph=71, Dmin=4.5 km, Rmss=0.19 sec, Erho=0.26 km, Erzz=0.45 km, Gp=83 degrees |
| Event ID# | ci40912071 |
| Additional Information | Map Did You Feel It? First Motion Focal Mechanism Waveforms |
For more information, see https://earthquake.usgs.gov
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