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 #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 5:30:30 PM (PDT) on Thursday, March 20, 2025.
The magnitude 0.8 event occurred 2 km (1 miles) NW of Fontana, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 0.8 - local magnitude (Ml) |
| Time | Thursday, March 20, 2025 at 5:30:30 PM (PDT) Friday, March 21, 2025 at 0:30:30 (UTC) |
| Distance from |
Fontana, CA - 2 km (1 miles) NW (304 degrees) Bloomington, CA - 8 km (5 miles) WNW (299 degrees) Rancho Cucamonga, CA - 10 km (6 miles) E (100 degrees) Rialto, CA - 10 km (6 miles) W (271 degrees) Glen Avon, CA - 11 km (7 miles) N (5 degrees) |
| Coordinates | 34 deg. 6.5 min. N (34.108N), 117 deg. 28.5 min. W (117.475W) |
| Depth | 9.03 km (5.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=22, Nph=29, Dmin=3.5 km, Rmss=0.14 sec, Erho=0.32 km, Erzz=0.54 km, Gp=106 degrees |
| Event ID# | ci40905703 |
| Additional Information | Map Waveforms |
For more information, see https://earthquake.usgs.gov
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