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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:38:39 AM (PDT) on Friday, April 3, 2026.
The magnitude 1.7 event occurred 6 km (4 miles) SE of Seal Beach, CA.
The hypocentral depth is 15 km (10 miles).


Magnitude 1.7 - local magnitude (Ml)
Time Friday, April 3, 2026 at 5:38:39 AM (PDT)
Friday, April 3, 2026 at 12:38:39 (UTC)
Distance from Seal Beach, CA - 6 km (4 miles) SE (137 degrees)
Huntington Beach, CA - 6 km (4 miles) W (281 degrees)
Westminster, CA - 8 km (5 miles) SW (219 degrees)
Rossmoor, CA - 10 km (6 miles) SSE (167 degrees)
Fountain Valley, CA - 10 km (6 miles) W (266 degrees)
Coordinates 33 deg. 42.1 min. N (33.702N), 118 deg. 3.7 min. W (118.061W)
Depth 15.44 km (9.60 miles)
Quality Good
Location Quality Parameters Nst=56, Nph=85, Dmin=3.4 km, Rmss=0.22 sec, Erho=0.26 km, Erzz=0.36 km, Gp=88 degrees
Event ID# ci41431832
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