U.S. Geological Survey, Menlo Park, California.
U.C. Berkeley Seismological Laboratory, Berkeley, California.
(members of the Council of the National Seismic System)
NOTE: Information in this page is updated regularly. If you are accessing
this page via the Web, you may need to RELOAD the page to get current data.
Below is a list of magnitude 2 or greater earthquakes recorded by the USGS Northern California Seismic Network and the UCB Berkeley Digital Seismic Network during the last 3 days. All times are in UTC (Universal Time), which is 8 hours ahead of PST and 7 hours ahead of PDT. This catalog is valid for Central and Northern California (approximately north of San Luis Obispo along the coast and 37 degrees N at the Nevada border).
Magnitudes are reported as local magnitude (Ml) or coda duration magnitude (Md) for small events. Depth is in kilometers. Q is location quality, where the quality of the location solution is A=E (A=good, E=bad), and '*' indicates the solution is from an automated system and has not been reviewed by staff.
Note: This is PRELIMINARY information. Earthquakes before 00:00 UT today which occur > ~50 km outside the boundaries of the network will not be listed unless reviewed by seismologists.
Catalogs for other regions of the country can be obtained by using `finger quake@computer' for the following computers:
geophys.washington.edu (Washington and Oregon) seismo.unr.edu (Nevada) scec.gps.caltech.edu (southern California) eqinfo.seis.utah.edu (Utah) fm.gi.alaska.edu (Alaska) slueas.slu.edu (central US) gldfs.cr.usgs.gov (large world-wide) tako.wr.usgs.gov (Hawaii)WWW access: for these lists, maps, and more go to http://quake.usgs.gov
Updated at Sun Jul 20 15:48:00 GMT 2008 a.k.a. Sun Jul 20 08:48:00 PDT 2008
****************************************************************************** DATE-(UTC)-TIME LAT LON DEP MAG Q COMMENTS yy/mm/dd hh:mm:ss deg. deg. km ------------------------------------------------------------------------------ 08/07/18 06:40:16 38.81N 122.80W 2.6 2.2Md A* 2 km NNE of The Geysers, CA 08/07/18 08:54:21 40.39N 122.12W 18.8 2.5Md B* 13 km E of Cottonwood, CA 08/07/18 13:08:42 38.54N 122.60W 3.9 2.8Md D* 5 km SSW of Calistoga, CA 08/07/18 18:19:41 39.15N 123.06W 7.5 2.8Ml A* 9 km E of Talmage, CA 08/07/18 18:29:43 35.27N 120.89W 3.1 2.3Md B* 7 km SW of Baywood-Los Osos, CA 08/07/19 01:57:28 38.81N 122.80W 3.4 2.2Md A* 2 km NNE of The Geysers, CA 08/07/19 02:00:33 37.43N 121.77W 8.8 2.5Md A* 8 km NNE of Alum Rock, CA 08/07/19 02:22:01 37.43N 121.77W 10.4 2.7Md A* 8 km NE of Alum Rock, CA 08/07/19 05:10:29 37.33N 118.73W 20.1 2.6Md A* 15 km SW of Round Valley, CA 08/07/19 10:44:09 38.41N 122.66W 10.5 2.6Md A* 6 km SE of Santa Rosa, CA 08/07/19 12:05:58 39.49N 123.10W 15.2 2.1Md B* 15 km NW of Lake Pillsbury, CA 08/07/20 07:01:47 36.57N 121.11W 9.8 2.2Md A* 5 km NNE of Pinnacles, CA 08/07/20 07:16:29 40.41N 124.31W 9.7 2.9Md C* 10 km N of Petrolia, CA