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Brown lines represent known hazardous faults or fault zones. White lines are roads.
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Update time = Sun May 19 8:00:02 PDT 2013
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

 2.1  2013/05/17 14:29:59 40.752N 122.313W  0.0   19 km (12 mi) NNE of Redding, CA
 1.7  2013/05/17 04:53:24 40.371N 121.734W  8.8   17 km (11 mi) SSW of Viola, CA
 0.9  2013/05/16 14:56:19 40.705N 121.481W  9.2   25 km (15 mi) SE  of Burney, CA
 1.5  2013/05/15 21:18:36 40.152N 122.748W 13.6   44 km (27 mi) W   of Red Bluff, CA
 1.2  2013/05/15 14:59:37 40.608N 122.478W 10.0    8 km ( 5 mi) WNW of Redding, CA
 1.9  2013/05/14 02:39:09 40.459N 121.548W  5.8   13 km ( 8 mi) ESE of Viola, CA
 1.6  2013/05/13 17:46:41 41.284N 121.556W  5.0   45 km (28 mi) SE  of Tennant, CA
 0.7  2013/05/12 12:57:15 40.369N 121.727W  7.2   17 km (11 mi) SSW of Viola, 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)