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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 0:00:04 PDT 2019
Here are the earthquakes appearing on this map, most recent at top ...

 MAG    DATE    LOCAL-TIME  LAT     LON    DEPTH    LOCATION
        y/m/d     h:m:s     deg     deg     km
 1.2 2019/09/21 17:12:38 33.998N 117.887W 16.6    2 km ( 1 mi) SE  of South San Jose Hills, CA
 1.7 2019/09/21 09:34:55 33.942N 117.201W 13.3    3 km ( 2 mi) NE  of Moreno Valley, CA
 1.6 2019/09/20 23:38:37 33.791N 118.518W  6.5   12 km ( 7 mi) W   of Palos Verdes Estates, CA
 1.5 2019/09/20 13:47:20 33.862N 117.522W  0.7    2 km ( 2 mi) WNW of Quarry at CORONA  (Probable quarry explosion)
 1.0 2019/09/20 13:09:04 33.872N 117.501W -0.5    2 km ( 2 mi) N   of Quarry at CORONA  (Probable quarry explosion)
 0.6 2019/09/20 12:47:32 33.761N 117.104W  1.7    4 km ( 2 mi) NW  of Green Acres, CA
 1.7 2019/09/19 12:22:17 33.846N 117.490W  2.4    1 km ( 1 mi) ESE of Quarry at CORONA  (Probable quarry explosion)
 1.1 2019/09/19 10:00:01 33.818N 117.485W -0.6    4 km ( 2 mi) SSE of Quarry at CORONA  (Probable quarry explosion)
 0.7 2019/09/18 10:37:13 32.641N 117.157W -0.1    6 km ( 3 mi) SSE of Coronado, CA
 0.8 2019/09/18 07:09:35 33.955N 117.120W  3.2    7 km ( 4 mi) WSW of Calimesa, CA
 0.8 2019/09/17 23:23:27 33.868N 117.028W 12.7    8 km ( 5 mi) SW  of Beaumont, CA
 1.0 2019/09/17 14:39:06 33.873N 117.499W  2.2    2 km ( 1 mi) ESE of Home Gardens, CA
 1.7 2019/09/16 01:00:34 32.837N 117.240W 12.8    3 km ( 2 mi) ESE of La Jolla, CA
 0.9 2019/09/15 13:25:32 34.000N 117.257W 14.7    5 km ( 3 mi) S   of Loma Linda, CA
 0.6 2019/09/15 07:20:28 33.531N 117.333W 16.4    9 km ( 6 mi) SSW of Wildomar, CA
 1.2 2019/09/15 03:58:06 33.987N 118.233W 14.3    1 km ( 1 mi) NW  of Huntington Park, CA
 0.9 2019/09/15 01:20:30 33.837N 117.659W  9.9    9 km ( 6 mi) WSW of Corona, 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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