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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 = Thu Apr 24 14:00:03 PDT 2014
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
 1.5  2014/04/24 09:56:58 37.383N 122.189W  4.2    4 km ( 3 mi) E   of Portola Valley, CA
 2.7  2014/04/24 06:21:51 37.385N 122.180W  4.8    5 km ( 3 mi) E   of Portola Valley, CA
 2.2  2014/04/24 03:52:11 37.385N 122.187W  5.0    4 km ( 3 mi) E   of Portola Valley, CA
 1.6  2014/04/24 00:37:53 37.383N 122.188W  4.4    4 km ( 3 mi) E   of Portola Valley, CA
 1.0  2014/04/23 17:44:55 37.769N 122.176W 16.0    5 km ( 3 mi) NNW of San Leandro, CA
 2.0  2014/04/23 12:20:01 37.323N 122.099W  0.1    6 km ( 4 mi) W   of Cupertino, CA
 1.0  2014/04/21 14:44:48 37.855N 122.322W 11.4    5 km ( 3 mi) WSW of Berkeley, CA
 1.9  2014/04/20 05:23:01 37.948N 122.314W  8.4    3 km ( 2 mi) ENE of Richmond, CA
 1.0  2014/04/20 01:12:12 37.914N 122.290W  3.8    5 km ( 3 mi) NNW of Berkeley, CA

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

Data Sources

Northern California - USGS = U.S. Geological Survey, Menlo Park
Northern California - UCB = University of California, Berkeley
Southern California - USGS = U.S. Geological Survey, Pasadena
Southern California - Caltech = California Institute of Technology
Southern California - UCSD = University of California, San Diego
Nevada - UNR = University of Nevada, Reno
US and World - USGS/NEIC = National Earthquake Information Center
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)



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