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Brown lines represent known hazardous faults or fault zones. White lines are roads.
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Update time = Mon May 21 1:00:05 PDT 2012
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  2012/05/20 14:50:56 39.933N 123.535W  2.1   28 km (17 mi) N   of Laytonville, CA
 2.8  2012/05/20 13:25:59 40.797N 124.758W  1.3   48 km (30 mi) WNW of Ferndale, CA
 1.8  2012/05/20 05:20:14 39.276N 123.217W  6.5   14 km ( 9 mi) N   of Ukiah, CA
 2.9  2012/05/20 04:16:21 40.248N 124.148W  9.8   14 km ( 9 mi) SE  of Petrolia, CA
 1.8  2012/05/19 12:55:00 39.558N 123.401W  7.0   16 km (10 mi) SSE of Laytonville, CA
 1.9  2012/05/19 01:39:21 39.228N 123.224W  6.8    9 km ( 5 mi) N   of Ukiah, CA
 1.9  2012/05/18 11:12:32 40.259N 123.406W 24.1   38 km (24 mi) SSW of Hayfork, CA
 2.0  2012/05/17 21:21:33 39.473N 123.117W  0.1   15 km (10 mi) WNW of Lake Pillsbury, CA
 2.4  2012/05/15 17:50:30 39.675N 123.548W  4.1    6 km ( 4 mi) WSW of Laytonville, CA
 2.6  2012/05/15 14:53:15 39.675N 123.544W  3.4    6 km ( 3 mi) WSW of Laytonville, CA
 1.5  2012/05/15 05:19:31 39.263N 123.115W  7.2   15 km ( 9 mi) NNE of Ukiah, CA

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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)