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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 = Wed Sep 18 4:00:03 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 2019/09/18 03:17:59 34.016N 117.232W 14.4    5 km ( 3 mi) SE  of Loma Linda, 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
 1.3 2019/09/17 12:09:23 34.213N 117.615W  9.8   11 km ( 7 mi) NNW of Rancho Cucamonga, CA
 1.2 2019/09/17 10:13:38 34.043N 117.273W 15.9    1 km ( 1 mi) WSW of Loma Linda, CA
 1.0 2019/09/16 22:59:00 34.005N 117.240W 18.6    5 km ( 3 mi) SSE of Loma Linda, CA
 1.3 2019/09/16 13:00:59 34.061N 117.259W 15.8    1 km ( 1 mi) N   of Loma Linda, CA
 1.1 2019/09/16 10:19:34 34.041N 117.249W 14.0    1 km ( 1 mi) SE  of Loma Linda, CA
 1.0 2019/09/16 08:25:17 34.141N 117.731W 10.6    5 km ( 3 mi) NNW of Claremont, CA
 0.9 2019/09/15 18:12:08 34.012N 117.527W  1.8    2 km ( 1 mi) NNW of Mira Loma, CA
 1.0 2019/09/15 15:36:17 34.022N 117.508W  2.2    2 km ( 2 mi) WNW of Glen Avon, CA
 1.4 2019/09/15 14:14:39 34.019N 117.120W  8.7    6 km ( 4 mi) SSE of Mentone, CA
 0.9 2019/09/15 13:25:32 34.000N 117.257W 14.7    5 km ( 3 mi) S   of Loma Linda, CA
 0.8 2019/09/15 10:45:22 34.058N 117.503W  2.5    5 km ( 3 mi) NNW of Glen Avon, 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
 1.2 2019/09/15 03:56:17 34.043N 117.512W  3.6    4 km ( 3 mi) NW  of Glen Avon, CA
 0.9 2019/09/15 01:20:30 33.837N 117.659W  9.9    9 km ( 6 mi) WSW of Corona, CA
 1.2 2019/09/14 19:57:51 33.868N 117.874W  8.0    1 km ( 0 mi) SW  of Placentia, CA
 0.5 2019/09/14 17:04:24 33.777N 117.555W  7.6   10 km ( 6 mi) S   of Corona, CA
 0.8 2019/09/14 16:54:36 34.034N 117.229W 15.4    3 km ( 2 mi) ESE of Loma Linda, CA
 1.5 2019/09/14 10:34:48 33.530N 117.027W 13.5   12 km ( 7 mi) ENE of Temecula, CA
 2.2 2019/09/14 09:16:32 33.961N 117.510W  9.7    3 km ( 2 mi) WSW of Pedley, CA
 0.9 2019/09/14 09:14:21 34.017N 117.540W  3.2    4 km ( 2 mi) NW  of Mira Loma, CA
 1.1 2019/09/14 08:56:23 34.033N 117.517W  3.2    4 km ( 2 mi) NW  of Glen Avon, CA
 0.7 2019/09/14 03:53:02 34.032N 117.504W  3.1    3 km ( 2 mi) NW  of Glen Avon, CA
 3.5 2019/09/14 02:48:39 33.546N 118.172W 11.7   23 km (14 mi) SSW of Seal Beach, CA
 1.2 2019/09/14 01:43:22 33.932N 118.018W 16.4    2 km ( 1 mi) NNW of La Mirada, CA
 2.0 2019/09/13 18:01:12 33.960N 117.508W  9.3    3 km ( 2 mi) WSW of Pedley, CA
 1.2 2019/09/13 17:11:58 34.020N 117.534W  2.1    3 km ( 2 mi) NNW of Mira Loma, CA
 1.5 2019/09/13 16:54:12 33.958N 117.513W  7.6    4 km ( 2 mi) S   of Mira Loma, CA
 1.3 2019/09/13 16:29:25 34.009N 117.228W 16.3    5 km ( 3 mi) SE  of Loma Linda, CA
 2.0 2019/09/13 16:24:17 34.009N 117.234W 16.4    5 km ( 3 mi) SSE of Loma Linda, CA
 1.6 2019/09/13 13:57:37 34.016N 117.537W  2.4    3 km ( 2 mi) NW  of Mira Loma, CA
 1.5 2019/09/13 13:25:03 34.020N 117.530W  2.5    3 km ( 2 mi) NNW of Mira Loma, CA
 1.1 2019/09/13 07:23:28 34.355N 117.897W  9.0   17 km (10 mi) S   of Pearblossum, CA
 0.6 2019/09/13 02:23:57 33.630N 117.007W  4.5   11 km ( 7 mi) SE  of Winchester, CA
 0.6 2019/09/12 20:36:17 33.611N 117.269W 17.9    2 km ( 1 mi) NE  of Wildomar, CA
 1.0 2019/09/12 13:59:30 33.870N 117.502W -0.5    2 km ( 1 mi) N   of Quarry at CORONA  (Probable quarry explosion)
 0.9 2019/09/12 09:54:12 33.660N 117.332W  6.7    1 km ( 1 mi) SSW of Lake Elsinore, CA
 1.7 2019/09/12 07:03:49 34.004N 117.197W 15.9    6 km ( 4 mi) SSW of Redlands, CA
 1.0 2019/09/12 06:51:29 34.031N 117.505W  2.6    3 km ( 2 mi) NW  of Glen Avon, CA
 0.9 2019/09/12 05:00:10 33.522N 117.091W 11.6    6 km ( 4 mi) ENE of Temecula, CA
 1.5 2019/09/11 16:28:20 33.843N 117.492W -0.5    1 km ( 1 mi) SE  of Quarry at CORONA  (Probable quarry explosion)
 1.0 2019/09/11 14:39:01 34.026N 117.132W  8.3    5 km ( 3 mi) S   of Mentone, CA
 1.7 2019/09/11 11:50:56 34.794N 118.959W 12.1    3 km ( 2 mi) SSW of Frazier Park, CA
 1.6 2019/09/11 08:42:15 34.013N 117.583W  3.5    6 km ( 4 mi) SE  of Ontario, CA
 0.8 2019/09/11 08:12:37 34.005N 117.096W 14.4    4 km ( 3 mi) WNW of Calimesa, CA

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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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