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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 Apr 23 5:00:04 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
 1.0 2019/04/23 03:34:23 37.893N 122.213W  8.7    3 km ( 2 mi) WNW of Orinda, CA
 1.2 2019/04/22 11:51:15 37.323N 122.104W -0.2    0 km ( 0 mi) S   of Quarry near Cupertino, CA (Probable quarry explosion)
 2.3 2019/04/22 09:02:32 37.042N 122.128W  9.6    2 km ( 1 mi) E   of Bonny Doon, CA
 1.4 2019/04/19 10:46:59 37.667N 122.535W  9.3    5 km ( 3 mi) WSW of Broadmoor, CA
 1.2 2019/04/19 01:38:10 37.169N 122.330W 11.4   19 km (12 mi) WNW of Boulder Creek, CA
 1.0 2019/04/18 22:12:10 37.665N 122.484W  8.3    2 km ( 1 mi) S   of Broadmoor, CA
 1.0 2019/04/18 16:49:33 37.168N 122.297W  9.5   16 km (10 mi) WNW of Boulder Creek, CA
 1.4 2019/04/18 14:46:34 37.172N 122.330W 11.3   19 km (12 mi) WNW of Boulder Creek, CA
 1.6 2019/04/18 14:40:20 37.175N 122.335W 11.7   20 km (12 mi) WNW of Boulder Creek, CA
 1.8 2019/04/18 14:39:14 37.157N 122.357W 13.4   21 km (13 mi) W   of Boulder Creek, CA
 2.5 2019/04/18 14:35:46 37.175N 122.335W 12.0   20 km (12 mi) WNW of Boulder Creek, CA
 2.8 2019/04/18 14:35:29 37.167N 122.352W 13.5   21 km (13 mi) WNW of Boulder Creek, CA
 1.9 2019/04/18 14:11:01 37.173N 122.334W 12.4   19 km (12 mi) WNW of Boulder Creek, CA
 1.3 2019/04/18 11:09:11 37.320N 122.102W -0.3    1 km ( 0 mi) S   of Quarry near Cupertino, CA (Probable quarry explosion)
 2.0 2019/04/17 05:39:02 37.665N 122.528W  7.5    5 km ( 3 mi) WSW of Broadmoor, CA
 2.2 2019/04/16 22:11:43 37.304N 122.082W  6.2    5 km ( 3 mi) WSW of Cupertino, CA
 1.3 2019/04/16 16:41:46 37.803N 122.194W  9.0    3 km ( 2 mi) ENE of Oakland, CA
 1.3 2019/04/16 11:54:30 37.323N 122.103W -0.2    0 km ( 0 mi) S   of Quarry near Cupertino, CA (Probable quarry explosion)
 1.2 2019/04/16 11:30:34 37.993N 122.447W -0.0   35 km (21 mi) NW  of Quarry near San Leandro, CA(Probable quarry explosion)

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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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