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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 = Sat Nov 7 17:00:05 PST 2009
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

 1.7  2009/11/06 01:30:53 41.187N 122.127W  1.7    8 km ( 5 mi) S   of McCloud, CA
 1.5  2009/11/05 12:54:51 40.111N 123.145W 15.5   36 km (23 mi) NNE of Covelo, CA
 1.6  2009/11/05 01:13:43 40.528N 123.818W 21.0   24 km (15 mi) E   of Hydesville, CA
 2.7  2009/11/04 07:21:39 40.281N 123.692W 29.1   21 km (13 mi) NNE of Redway, CA
 2.2  2009/11/04 00:20:00 40.160N 122.791W  4.5   47 km (29 mi) W   of Red Bluff, CA
 1.5  2009/11/03 16:50:12 40.931N 122.361W  9.4   32 km (20 mi) SSW of Dunsmuir, CA
 0.7  2009/11/03 01:20:53 41.244N 122.235W  5.7    5 km ( 3 mi) NE  of Dunsmuir, CA
 0.9  2009/11/03 01:05:04 41.404N 122.258W  2.7   11 km ( 7 mi) E   of Weed, 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)