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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 = Mon Oct 19 16:00:03 PDT 2020
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
 1.1 2020/10/19 13:33:19 33.335N 117.128W  1.8    6 km ( 4 mi) SW  of Pala, CA
 1.4 2020/10/19 12:25:04 33.847N 117.495W  2.1    1 km ( 0 mi) ESE of Quarry at CORONA  (Probable quarry explosion)
 0.6 2020/10/18 19:12:30 33.994N 117.850W  6.5    3 km ( 2 mi) SSE of Walnut, CA
 0.7 2020/10/18 10:58:30 33.526N 117.085W 11.6    7 km ( 4 mi) ENE of Temecula, CA
 0.8 2020/10/18 06:50:16 33.936N 117.060W 18.2    6 km ( 4 mi) S   of Calimesa, CA
 0.9 2020/10/18 02:27:32 33.828N 117.718W  7.4    9 km ( 6 mi) E   of Villa Park, CA
 0.7 2020/10/17 15:10:52 33.921N 117.164W  9.5    6 km ( 4 mi) E   of Moreno Valley, CA
 0.6 2020/10/16 12:08:15 33.340N 117.144W -0.3    5 km ( 3 mi) N   of Quarry at PALA-HWY  (Probable quarry explosion)
 0.5 2020/10/16 05:35:58 33.692N 117.404W  8.9    8 km ( 5 mi) WNW of Lake Elsinore, CA
 1.0 2020/10/15 16:24:37 33.914N 117.558W 15.7    2 km ( 1 mi) SSW of Norco, CA
 0.9 2020/10/15 12:30:45 33.140N 117.152W -0.2    1 km ( 1 mi) N   of Quarry at E-VISTA  (Probable quarry explosion)
 1.9 2020/10/15 11:14:13 33.847N 117.496W  2.4    0 km ( 0 mi) SE  of Quarry at CORONA  (Probable quarry explosion)
 1.2 2020/10/14 14:36:39 33.938N 117.197W 12.1    3 km ( 2 mi) ENE of Moreno Valley, CA
 0.9 2020/10/13 14:21:05 33.876N 117.491W -0.5    3 km ( 2 mi) NNE of Quarry at CORONA  (Probable quarry explosion)
 0.9 2020/10/13 03:01:37 33.729N 117.520W  5.8   10 km ( 6 mi) NE  of Trabuco Canyon, CA
 0.8 2020/10/13 00:24:03 33.957N 117.546W  2.4    3 km ( 2 mi) N   of Norco, CA
 0.6 2020/10/13 00:23:59 33.956N 117.545W  2.8    3 km ( 2 mi) N   of Norco, CA
 1.5 2020/10/12 22:05:20 33.938N 117.950W  8.4    1 km ( 0 mi) NNW of La Habra, CA
 2.4 2020/10/12 17:57:56 33.851N 118.447W 12.6    5 km ( 3 mi) WSW of Hermosa 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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