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Maps are updated within about 5 minutes of an earthquake or once an hour.
Brown lines represent known hazardous faults or fault zones. White lines are roads.
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Update time = Fri Jul 20 14:00:03 PDT 2018
Here are the earthquakes appearing on this map, most recent at top ...

        y/m/d     h:m:s     deg     deg     km
 1.7 2018/07/18 11:54:25 33.541N 118.368W -0.2   22 km (14 mi) N   of Avalon, CA
 1.2 2018/07/16 03:34:31 33.907N 118.554W 14.1   12 km ( 8 mi) SW  of Marina del Rey, CA
 1.6 2018/07/15 18:27:53 33.915N 118.561W 10.7   12 km ( 8 mi) SW  of Marina del Rey, CA
 1.3 2018/07/14 16:41:59 33.722N 118.131W 10.1    3 km ( 2 mi) SW  of Seal Beach, CA

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Data Sources

US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Southern California - UCSD = University of California, San Diego
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)

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