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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 1:23:26 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
 0.7 2019/09/21 15:22:40 34.036N 117.267W 15.9    1 km ( 1 mi) SSW of Loma Linda, CA
 1.0 2019/09/21 11:28:33 34.264N 117.633W 10.0   11 km ( 7 mi) S   of Wrightwood, CA
 1.7 2019/09/21 09:34:55 33.942N 117.201W 13.3    3 km ( 2 mi) NE  of Moreno Valley, CA
 1.3 2019/09/21 07:59:34 34.649N 118.599W 23.7   14 km ( 9 mi) S   of Neenach, CA
 1.1 2019/09/21 06:26:13 34.028N 117.528W  2.0    4 km ( 3 mi) NNW of Mira Loma, 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
 0.8 2019/09/20 23:20:53 34.018N 117.522W  1.5    3 km ( 2 mi) N   of Mira Loma, 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 12:55:40 34.857N 118.971W  2.0    5 km ( 3 mi) NNW of Frazier Park, CA
 0.6 2019/09/20 12:47:32 33.761N 117.104W  1.7    4 km ( 2 mi) NW  of Green Acres, CA
 1.0 2019/09/20 12:14:05 34.038N 117.084W 13.2    4 km ( 2 mi) W   of Yucaipa, CA
 1.0 2019/09/20 12:01:16 34.005N 117.153W 11.4    6 km ( 4 mi) SSE of Redlands, CA
 1.2 2019/09/20 11:55:05 34.035N 117.104W  7.1    5 km ( 3 mi) SE  of Mentone, CA
 1.4 2019/09/20 10:14:08 34.024N 117.113W 11.6    6 km ( 3 mi) SSE of Mentone, CA
 2.2 2019/09/20 02:54:21 34.028N 117.533W  2.8    4 km ( 3 mi) NNW of Mira Loma, CA
 1.1 2019/09/19 20:27:55 34.031N 117.035W 13.3    1 km ( 0 mi) ESE of Yucaipa, CA
 1.2 2019/09/19 20:19:03 34.228N 117.527W  6.6    4 km ( 3 mi) SW  of Lytle Creek, CA
 1.0 2019/09/19 17:26:40 34.172N 117.633W  9.1    7 km ( 5 mi) NW  of Rancho Cucamonga, CA
 1.2 2019/09/19 15:06:03 34.218N 117.509W  7.9    5 km ( 3 mi) S   of Lytle Creek, 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)
 1.5 2019/09/19 05:49:56 34.035N 117.240W 17.0    2 km ( 2 mi) SE  of Loma Linda, CA
 1.5 2019/09/18 22:54:25 34.280N 118.590W -0.1    3 km ( 2 mi) NNE of Chatsworth, CA
 1.9 2019/09/18 22:17:42 34.048N 117.291W 17.5    3 km ( 2 mi) NE  of Grand Terrace, CA
 0.7 2019/09/18 18:59:39 34.153N 117.607W 12.2    4 km ( 3 mi) NW  of Rancho Cucamonga, CA
 1.0 2019/09/18 12:14:27 34.009N 117.069W 17.1    3 km ( 2 mi) NNW of Calimesa, CA
 0.8 2019/09/18 07:09:35 33.955N 117.120W  3.2    7 km ( 4 mi) WSW of Calimesa, CA
 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 34.017N 117.526W  3.2    3 km ( 2 mi) NNW of Mira Loma, CA
 0.8 2019/09/15 15:36:17 34.028N 117.513W  3.4    3 km ( 2 mi) NW  of Glen Avon, CA
 1.4 2019/09/15 14:14:39 34.020N 117.121W  9.4    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

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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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