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 4:52:46 AM (PST) on Monday, December 1, 2025.
The magnitude 1.1 event occurred 14 km (9 miles) SE of Ridgemark, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Monday, December 1, 2025 at 4:52:46 AM (PST) Monday, December 1, 2025 at 12:52:46 (UTC) |
| Distance from |
Ridgemark, CA - 14 km (9 miles) SE (124 degrees) Hollister, CA - 19 km (12 miles) SE (128 degrees) San Juan Bautista, CA - 30 km (18 miles) ESE (113 degrees) Gonzales, CA - 32 km (20 miles) NE (36 degrees) Chualar, CA - 32 km (20 miles) NE (54 degrees) |
| Coordinates | 36 deg. 44.4 min. N (36.741N), 121 deg. 13.9 min. W (121.231W) |
| Depth | 8.83 km (5.50 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=4.6 km, Rmss=0.07 sec, Erho=0.62 km, Erzz=1.45000005 km, Gp=145 degrees |
| Event ID# | nc75272676 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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