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Maps are updated within about 5 minutes of an earthquake or once an hour.
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Update time = Fri Jul 20 15:00:02 PDT 2018
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
 1.3 2018/07/20 12:33:09 33.557N 117.507W -0.7    3 km ( 2 mi) SSW of Quarry at ELS  (Probable quarry explosion)
 1.2 2018/07/20 12:22:47 33.855N 117.484W -0.5    2 km ( 1 mi) ENE of Quarry at CORONA  (Probable quarry explosion)
 1.1 2018/07/20 11:01:56 34.042N 117.504W  9.8    4 km ( 2 mi) NNW of Glen Avon, CA
 1.5 2018/07/20 11:00:07 34.036N 117.513W  9.5    4 km ( 2 mi) NW  of Glen Avon, CA
 1.0 2018/07/20 06:33:53 34.577N 118.035W  9.8    6 km ( 4 mi) E   of Palmdale, CA
 0.4 2018/07/20 04:39:27 34.214N 117.502W  6.6    5 km ( 3 mi) S   of Lytle Creek, CA
 0.8 2018/07/20 03:24:47 34.495N 118.343W  8.1    2 km ( 1 mi) W   of Agua Dulce, CA
 0.7 2018/07/20 00:31:38 33.886N 117.753W  7.4    6 km ( 3 mi) E   of Yorba Linda, CA
 0.8 2018/07/19 14:33:08 34.018N 117.218W 15.2    5 km ( 3 mi) SE  of Loma Linda, CA
 1.2 2018/07/19 14:15:27 34.002N 117.163W 13.7    6 km ( 4 mi) SSE of Redlands, CA
 0.9 2018/07/19 14:13:11 33.834N 117.674W  8.2   11 km ( 7 mi) WSW of Corona, CA
 1.3 2018/07/19 12:44:08 34.637N 117.113W -0.8    1 km ( 1 mi) NE  of Quarry at VICTORVILLE  (Probable quarry explosion)
 2.0 2018/07/19 11:20:53 33.819N 117.002W 13.8    6 km ( 4 mi) NW  of San Jacinto, CA
 1.1 2018/07/19 08:14:26 34.042N 117.569W 11.5    6 km ( 3 mi) ESE of Ontario, CA
 0.7 2018/07/19 03:09:58 34.040N 117.511W  8.0    4 km ( 2 mi) NW  of Glen Avon, CA
 0.9 2018/07/19 03:04:18 33.942N 117.102W 13.6    7 km ( 4 mi) SW  of Calimesa, CA
 2.1 2018/07/18 23:55:01 34.036N 117.512W 10.6    4 km ( 2 mi) NW  of Glen Avon, CA
 0.5 2018/07/18 23:51:04 34.242N 117.476W  8.2    3 km ( 2 mi) SE  of Lytle Creek, CA
 1.2 2018/07/18 12:49:54 34.861N 118.779W -1.2    2 km ( 1 mi) NW  of Quarry at GORMAN  (Probable quarry explosion)
 1.0 2018/07/18 12:13:16 33.874N 117.503W -0.5    3 km ( 2 mi) N   of Quarry at CORONA  (Probable quarry explosion)
 1.5 2018/07/18 12:11:09 34.996N 118.186W -0.8    2 km ( 1 mi) SW  of Quarry at TPO-DBM  (Probable quarry explosion)
 1.7 2018/07/18 11:54:25 33.541N 118.368W -0.2   22 km (14 mi) N   of Avalon, CA
 1.3 2018/07/18 10:03:11 33.834N 117.481W -0.6    3 km ( 2 mi) SE  of Quarry at CORONA  (Probable quarry explosion)
 0.8 2018/07/18 08:12:46 34.043N 117.501W 10.1    4 km ( 2 mi) NNW of Glen Avon, CA
 0.9 2018/07/18 06:59:37 34.197N 117.454W  8.8    5 km ( 3 mi) WSW of Devore, CA
 0.8 2018/07/18 05:25:47 34.040N 117.508W  7.0    4 km ( 2 mi) NW  of Glen Avon, CA
 0.8 2018/07/18 04:22:28 34.013N 117.582W  2.6    6 km ( 4 mi) SE  of Ontario, CA
 0.5 2018/07/18 01:08:37 34.096N 117.307W 17.6    3 km ( 2 mi) NNE of Colton, CA
 1.0 2018/07/18 00:30:28 34.009N 117.582W  3.5    6 km ( 4 mi) WNW of Mira Loma, CA
 1.2 2018/07/17 12:59:37 34.167N 117.599W  9.2    5 km ( 3 mi) NNW of Rancho Cucamonga, CA
 1.0 2018/07/17 12:16:01 34.217N 117.427W 12.1    2 km ( 1 mi) WSW of Devore, CA
 1.0 2018/07/17 04:35:49 33.984N 117.182W 15.2    8 km ( 5 mi) NE  of Moreno Valley, CA
 0.9 2018/07/17 00:54:09 33.939N 117.925W  7.7    2 km ( 1 mi) ENE of La Habra, CA
 1.2 2018/07/16 23:57:22 34.011N 117.211W 16.6    6 km ( 3 mi) SSW of Redlands, CA
 0.6 2018/07/16 15:35:43 33.992N 117.159W 14.4    7 km ( 5 mi) SSE of Redlands, CA
 0.9 2018/07/16 15:33:31 33.997N 117.149W  5.6    7 km ( 4 mi) SSE of Redlands, CA
 0.8 2018/07/16 15:33:25 33.999N 117.151W  2.2    7 km ( 4 mi) SSE of Redlands, CA
 0.9 2018/07/16 14:24:37 34.008N 117.582W  3.8    6 km ( 4 mi) WNW of Mira Loma, CA
 0.8 2018/07/16 14:23:57 34.007N 117.589W  2.4    6 km ( 4 mi) SE  of Ontario, CA
 0.9 2018/07/16 12:52:21 33.878N 117.504W -0.5    3 km ( 2 mi) SSE of Quarry at GAV  (Probable quarry explosion)
 1.0 2018/07/16 10:51:34 34.188N 117.612W  6.9    8 km ( 5 mi) NNW of Rancho Cucamonga, CA
 0.8 2018/07/16 10:14:24 34.020N 117.455W -0.7   10 km ( 6 mi) WSW of Quarry at SLOVER  (Probable quarry explosion)
 1.0 2018/07/16 09:46:43 34.034N 117.253W 15.9    2 km ( 1 mi) SSE of Loma Linda, CA
 0.8 2018/07/16 09:44:41 34.450N 117.939W  9.8    7 km ( 4 mi) SSW of Pearblossum, CA
 1.1 2018/07/16 03:34:58 34.175N 118.005W 10.8    3 km ( 2 mi) N   of Monrovia, 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
 0.8 2018/07/16 01:38:51 33.979N 117.753W  8.9    2 km ( 1 mi) SSE of Chino Hills, CA
 0.7 2018/07/15 22:25:06 34.012N 117.204W 11.0    5 km ( 3 mi) SSW of Redlands, CA
 1.1 2018/07/15 22:11:32 34.010N 117.583W  2.9    6 km ( 4 mi) SE  of Ontario, CA
 0.9 2018/07/15 20:55:04 34.008N 117.582W  2.9    6 km ( 4 mi) WNW of Mira Loma, CA
 2.4 2018/07/15 20:53:53 34.009N 117.584W  3.1    6 km ( 4 mi) SE  of Ontario, CA
 1.7 2018/07/15 20:43:29 34.008N 117.587W  3.2    6 km ( 4 mi) SE  of Ontario, CA
 0.7 2018/07/15 18:50:52 34.067N 117.263W 17.1    2 km ( 1 mi) N   of Loma Linda, 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
 0.9 2018/07/15 17:06:30 34.010N 117.581W  4.3    6 km ( 4 mi) WNW of Mira Loma, CA
 0.8 2018/07/15 14:05:21 34.017N 117.577W  4.5    6 km ( 4 mi) SE  of Ontario, CA
 0.8 2018/07/15 11:44:22 34.087N 117.279W 13.8    4 km ( 2 mi) ENE of Colton, CA
 0.7 2018/07/15 01:26:24 34.006N 117.176W 14.4    6 km ( 3 mi) S   of Redlands, CA
 0.9 2018/07/15 00:22:38 34.151N 117.476W  6.4    6 km ( 4 mi) NNW of Fontana, CA
 1.0 2018/07/14 21:52:47 33.953N 117.333W 15.6    6 km ( 4 mi) E   of Riverside, CA
 2.1 2018/07/14 21:34:42 34.208N 117.394W 11.7    2 km ( 1 mi) SSE of Devore, CA
 0.7 2018/07/14 21:33:55 34.014N 117.584W  2.7    6 km ( 4 mi) SE  of Ontario, CA
 1.3 2018/07/14 16:41:59 33.722N 118.131W 10.1    3 km ( 2 mi) SW  of Seal Beach, CA
 1.5 2018/07/14 12:05:27 34.990N 118.185W -0.8    3 km ( 2 mi) SSW of Quarry at TPO-DBM  (Probable quarry explosion)
 0.8 2018/07/14 11:56:27 34.443N 117.944W 10.8    8 km ( 5 mi) SSW of Pearblossum, CA
 0.9 2018/07/14 10:34:30 34.080N 117.272W 12.7    4 km ( 2 mi) NNW of Loma Linda, CA
 1.6 2018/07/14 08:02:52 33.451N 117.688W 13.5    2 km ( 1 mi) SSE of Dana Point, CA
 1.2 2018/07/14 01:51:24 34.050N 118.180W 11.0    2 km ( 1 mi) NNW of East Los Angeles, 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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