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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 = Sun Dec 21 11:00:03 PST 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
 1.8  2014/12/19 20:53:58 39.165N 120.911W  0.2    8 km ( 5 mi) NNE of Colfax, CA
 1.3  2014/12/19 12:56:18 39.401N 120.182W 11.6    8 km ( 5 mi) N   of Truckee, CA
 0.9  2014/12/19 11:09:04 39.403N 120.183W 10.0    8 km ( 5 mi) N   of Truckee, CA
 1.0  2014/12/18 18:36:10 39.700N 120.815W 26.7   29 km (18 mi) SSE of Quincy, CA
 1.8  2014/12/17 17:36:33 39.350N 120.002W  1.7   13 km ( 8 mi) N   of Kings Beach, CA
 0.7  2014/12/17 13:24:53 39.875N 120.479W  8.5    7 km ( 5 mi) N   of Portola, CA
 0.3  2014/12/16 07:07:58 39.529N 120.318W 12.3   18 km (11 mi) SSW of Loyalton, CA
 0.2  2014/12/15 18:53:45 39.409N 120.195W 10.5    9 km ( 6 mi) N   of Truckee, CA
 0.5  2014/12/15 06:39:08 39.351N 120.002W  7.2   13 km ( 8 mi) N   of Kings Beach, 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)



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