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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 = Sat Aug 24 21:00:03 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 2019/08/21 08:45:32 37.460N 115.978W  0.0   73 km (45 mi) W   of Alamo, NV
 0.0 2019/08/20 23:27:27 37.183N 115.742W 13.6   55 km (34 mi) WSW of Alamo, NV
 0.5 2019/08/20 22:04:39 37.440N 115.636W 14.5   42 km (26 mi) W   of Alamo, NV
 2.0 2019/08/20 05:54:58 38.334N 115.806W  8.4  122 km (76 mi) NNW of Alamo, NV

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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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