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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 Jan 28 11:00:04 PST 2020
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

 2.0 2020/01/28 05:09:10 38.346N 121.909W 14.3    7 km ( 4 mi) E   of Vacaville, CA
 2.8 2020/01/27 03:41:12 37.705N 120.089W 26.0   23 km (14 mi) NW  of Midpines, CA
 0.9 2020/01/26 13:19:07 37.467N 121.790W  9.5   10 km ( 6 mi) NNE of East Foothills, CA
 0.8 2020/01/26 00:06:00 37.637N 121.687W  5.5    9 km ( 5 mi) SE  of Livermore, CA
 1.0 2020/01/24 22:39:17 37.565N 121.828W 10.0   12 km ( 7 mi) SSE of Pleasanton, CA
 1.3 2020/01/24 04:10:02 37.715N 121.700W 11.5    7 km ( 4 mi) ENE of Livermore, CA
 2.0 2020/01/23 12:06:04 37.447N 120.039W 33.2    8 km ( 5 mi) WSW of Mariposa, CA
 1.1 2020/01/23 02:14:54 37.472N 121.814W  7.4    9 km ( 6 mi) ENE of Milpitas, CA

Special maps:
Long Valley || Los Angeles || San Francisco Index map || big earthquake list || all earthquake list || glossary of terms ||

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)