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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 = Sun Sep 22 1:00:00 PDT 2019
Here are the earthquakes appearing on this map, most recent at top ...

        y/m/d     h:m:s     deg     deg     km
 0.4 2019/09/21 03:53:51 40.070N 120.041W 12.0   44 km (27 mi) N   of Cold Springs, NV
 0.5 2019/09/20 03:38:21 40.013N 120.723W 11.6   17 km (11 mi) ENE of East Quincy, CA
 0.8 2019/09/19 03:30:22 40.461N 121.552W  1.9   29 km (18 mi) E   of Shingletown, CA
 2.3 2019/09/18 23:26:00 40.038N 120.732W  8.9   18 km (11 mi) NE  of East Quincy, CA
 1.4 2019/09/17 04:31:10 40.724N 121.519W -1.5   21 km (13 mi) SE  of Burney, 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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