A minor earthquake occurred at 4:56:22 PM (PDT) on Thursday, April 23, 2009.
The magnitude 3.8 event occurred 3 km (2 miles) NE of Yorba Linda, CA.
The hypocentral depth is 0 km (0.0 miles).
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Magnitude 3.8 - local magnitude (ML)
Time Thursday, April 23, 2009 at 4:56:22 PM (PDT)
Thursday, April 23, 2009 at 23:56:22 (UTC)
Distance from Yorba Linda, CA - 3 km (2 miles) NE (43 degrees)
Placentia, CA - 9 km (5 miles) ENE (72 degrees)
Chino Hills, CA - 9 km (5 miles) SSW (207 degrees)
Orange, CA - 13 km (8 miles) NNE (28 degrees)
Los Angeles Civic Center, CA - 47 km (29 miles) ESE (110 degrees)
Coordinates 33 deg. 54.4 min. N (33.907N), 117 deg. 45.9 min. W (117.766W)
Depth 0 km (0.0 miles)
Location Quality Fair
Location Quality Parameters Nst=124, Nph=124, Dmin=9 km, Rmss=0.52 sec, Erho=0.3 km, Erzz=0.6 km, Gp=18 degrees
Event ID# ci10399801