Recent Earthquakes in California and Nevada


== PRELIMINARY EVENT 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 quarry occurred at 12:21:28 PM (PST) on Friday, February 27, 2026.
The magnitude 0.6 event (a probable quarry explosion) occurred 3 km (2 miles) NE (35 degrees) of Green Acres, CA.
The hypocentral depth is -1 km (-0.40 miles).


Magnitude 0.6 - local magnitude (Ml)
Time Friday, February 27, 2026 at 12:21:28 PM (PST)
Friday, February 27, 2026 at 20:21:28 (UTC)
Distance from Green Acres, CA - 3 km (2 miles) NE (35 degrees)
Winchester, CA - 6 km (4 miles) NNE (22 degrees)
Hemet, CA - 8 km (5 miles) W (278 degrees)
Menifee, CA - 9 km (5 miles) ENE (68 degrees)
Nuevo, CA - 9 km (6 miles) ESE (122 degrees)
Coordinates 33 deg. 45.4 min. N (33.757N), 117 deg. 3.6 min. W (117.060W)
Depth -0.63 km (-0.40 miles)
Quality Poor
Location Quality Parameters Nst=12, Nph=12, Dmin=7.7 km, Rmss=0.27 sec, Erho=1.71 km, Erzz=31.61 km, Gp=213 degrees
Event ID# ci41405704
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