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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 = Tue May 22 8:29:25 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
 0.5 2018/05/22 06:18:21 39.658N 120.055W  4.6    7 km ( 4 mi) WSW of Cold Springs, NV
 -0.1 2018/05/22 06:04:14 39.648N 120.042W  8.5    7 km ( 4 mi) WSW of Cold Springs, NV
 0.6 2018/05/22 05:58:20 39.660N 120.050W  4.7    7 km ( 4 mi) WSW of Cold Springs, NV
 0.1 2018/05/22 05:35:00 39.649N 120.049W  6.7    7 km ( 4 mi) WSW of Cold Springs, NV
 -0.2 2018/05/22 05:23:29 39.639N 120.045W  9.1    7 km ( 5 mi) SW  of Cold Springs, NV
 0.7 2018/05/22 04:57:36 39.657N 120.056W  5.1    7 km ( 5 mi) WSW of Cold Springs, NV
 -0.2 2018/05/22 03:17:47 39.631N 120.054W  8.8    9 km ( 5 mi) SW  of Cold Springs, NV
 0.5 2018/05/22 03:14:38 39.654N 120.051W  5.8    7 km ( 4 mi) WSW of Cold Springs, NV
 0.0 2018/05/22 02:12:25 39.655N 120.050W  4.8    7 km ( 4 mi) WSW of Cold Springs, NV
 0.8 2018/05/21 05:54:50 39.906N 120.723W 10.3   15 km ( 9 mi) ESE of East Quincy, CA
 0.5 2018/05/20 16:30:55 39.413N 120.210W 11.5   10 km ( 6 mi) NNW of Truckee, CA
 0.5 2018/05/20 12:37:10 39.418N 120.213W  9.9   10 km ( 6 mi) NNW of Truckee, CA
 0.9 2018/05/20 10:40:29 39.840N 120.599W  6.2   12 km ( 7 mi) WNW of Portola, CA
 0.2 2018/05/20 03:04:11 39.739N 120.741W 10.9   25 km (15 mi) WSW of Portola, CA
 1.6 2018/05/20 03:03:34 39.759N 120.738W  5.6   24 km (15 mi) WSW of Portola, CA
 1.2 2018/05/20 03:03:33 39.752N 120.746W  9.9   24 km (15 mi) SSE of East Quincy, CA
 1.4 2018/05/19 04:18:03 39.851N 120.480W  8.6    5 km ( 3 mi) NNW of Portola, CA
 1.4 2018/05/19 04:18:02 39.847N 120.479W 10.4    4 km ( 3 mi) NNW of Portola, CA
 -0.2 2018/05/18 22:49:48 39.257N 120.110W  8.8    5 km ( 3 mi) WNW of Tahoe Vista, CA
 1.0 2018/05/17 15:34:19 39.962N 120.990W 13.3    5 km ( 3 mi) NW  of Quincy, CA
 0.3 2018/05/17 02:11:16 39.218N 120.082W  7.3    4 km ( 2 mi) SW  of Tahoe Vista, CA
 -0.1 2018/05/15 22:18:07 39.222N 120.078W  6.7    3 km ( 2 mi) SW  of Tahoe Vista, CA
 0.8 2018/05/15 21:21:35 39.760N 120.736W  9.0   23 km (15 mi) WSW of Portola, CA
 2.0 2018/05/15 16:19:11 39.857N 120.737W 11.4   16 km (10 mi) ESE of East Quincy, CA
 1.5 2018/05/15 12:01:08 39.590N 120.659W  9.0   29 km (18 mi) SSW of Portola, CA
 1.3 2018/05/15 12:01:07 39.577N 120.660W 11.5   31 km (19 mi) SSW of Portola, 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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