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 8:15:13 PM (PDT) on Thursday, March 27, 2025.
The magnitude 1.5 event occurred 2 km (2 miles) SSE of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.5 - duration magnitude (Md)
Time Thursday, March 27, 2025 at 8:15:13 PM (PDT)
Friday, March 28, 2025 at 3:15:13 (UTC)
Distance from Ridgemark, CA - 2 km (2 miles) SSE (158 degrees)
Hollister, CA - 7 km (5 miles) SSE (148 degrees)
San Juan Bautista, CA - 17 km (11 miles) ESE (110 degrees)
Prunedale, CA - 28 km (17 miles) E (86 degrees)
Aromas, CA - 28 km (17 miles) ESE (113 degrees)
Coordinates 36 deg. 47.5 min. N (36.792N), 121 deg. 21.3 min. W (121.355W)
Depth 2.99 km (1.90 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=8, Dmin=8.8 km, Rmss=0.06 sec, Erho=0.35 km, Erzz=1.77999997 km, Gp=147 degrees
Event ID# nc75156497
Additional Information Map
Waveforms

For more information, see https://earthquake.usgs.gov

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