This report provides a brief summary of earthquake activity recorded by the U.S. Geological Survey Northern California Seismic Network in Menlo Park and the University of California Berkeley Seismological Laboratory. It is automatically generated each Wednesday shortly after midnight, Universal time (UT). UT (ie., Greenwich Mean Time) is 8 hours ahead of PST or 7 hours ahead of PDT.
Because it is not possible to review all of the earthquakes before this report is generated, it may contain errors. Please report errors or provide suggestions and comments to ncsn@andreas.wr.usgs.gov
Information about seismicity for other regions is available from the U.S. Geological Survey Earthquake Hazards Program Website. In addition, all earthquake data can be retrieved from the Northern California Earthquake Data Center.
Please note that some of the earthquake data in this report have been reviewed by seismic analysts. Consequently, the parameters that describe the hypocenter, magnitude, origin time, and solution statistics may differ slightly from the information provided at the Northern California Maps of Recent Earthquake Activity website. The differences reflect revised arrival times at seismic stations and the analysts' decisions to include or exclude information from seismic stations.
The minimum magnitude ( M) values in the following bullets reflect the smallest earthquake which the network can routinely record within the region. During the previous seven-day period ending at midnight (UT) Wednesday, our seismic networks recorded
The largest event to occur this week in this region was a microearthquake of magnitude 3.0, 6 miles NE of Cayucos, CA at 01:17 AM UTC Sunday, 01 13, 2008 (05:17 PM PST Saturday, Jan 12, 2008).
The largest event to occur this week in this region was a microearthquake of magnitude 2.7, 10 miles E of San Jose City Hall, CA at 03:17 PM UTC Monday, 01 14, 2008 (07:17 AM PST Monday, Jan 14, 2008).
The largest event to occur this week in this region was a microearthquake of magnitude 1.9, 12 miles SW of Toms Place, CA at 08:39 PM UTC Friday, 01 11, 2008 (12:39 PM PST Friday, Jan 11, 2008).
The following table provides a listing of all M >2 earthquakes that occurred this week. An explanation of the entries in the table is available.
---ORIGIN TIME (UT)--- -LAT N-- --LON W-- DEPTH N RMS ERH ERZ LOC PREF AZ MIN S. PAGE 1 YEAR MON DA HRMN SEC DEG MIN DEG MIN KM RD SEC KM KM REMKS MAG GAP DS PF 2008 JAN 10 1918 52.66 38 47.11 122 43.52 2.06 59 .10 .1 .2 2.9D 27 1 2008 JAN 10 2001 39.36 38 46.56 122 43.66 2.05 55 .06 .1 .2 2.5D 29 1 2008 JAN 11 0008 46.04 37 20.44 121 42.32 8.58 72 .07 .1 .3 2.1D 39 6 2008 JAN 11 0822 37.52 39 2.70 123 7.30 6.22 24 .09 .3 .4 2.3D 109 7 2008 JAN 12 0308 30.62 38 47.62 122 45.74 2.05 65 .07 .1 .2 2.7D 32 1 2008 JAN 12 1159 45.83 37 11.80 119 45.08 19.30 33 .22 .4 .4 2.6D 129 16 2008 JAN 12 1938 21.45 38 45.53 122 44.26 3.14 68 .07 .1 .2 2.3D 38 1 2008 JAN 13 0117 35.13 35 29.53 120 48.17 5.01 73 .13 .2 .6 3.0L 46 8 2008 JAN 13 0229 51.87 35 32.02 120 50.29 4.56 64 .11 .2 .6 2.3D 50 6 2008 JAN 13 1017 39.05 35 41.72 121 0.50 7.11 50 .11 .2 .5 2.0D 47 3 2008 JAN 13 1229 26.28 37 26.47 121 48.38 2.44 68 .06 .1 .2 2.1D 46 1 2008 JAN 14 0529 30.76 38 49.09 122 47.57 3.53 69 .08 .1 .2 2.8D 33 1 2008 JAN 14 1136 35.19 35 46.66 120 19.88 8.75 71 .08 .2 .3 2.8D 39 3 2008 JAN 14 1144 2.58 38 32.32 122 37.39 6.96 53 .12 .2 .3 2.3D 27 2 2008 JAN 14 1517 13.92 37 20.74 121 42.22 9.93119 .13 .1 .3 2.7D 39 5 2008 JAN 14 1839 56.78 36 33.36 121 6.89 4.24 45 .08 .1 .4 2.3D 39 6 2008 JAN 14 1911 31.05 40 46.79 123 33.84 23.69 18 .17 .5 .9 2.5D 105 18 2008 JAN 15 0150 26.38 38 48.50 122 46.67 2.17 57 .07 .1 .2 2.2D 31 1 2008 JAN 15 0303 4.71 36 29.77 121 4.38 3.68 37 .05 .1 .3 2.1D 67 2 2008 JAN 15 0318 41.78 36 12.82 120 19.77 10.20 58 .12 .2 .3 2.2D 56 4 2008 JAN 15 1703 12.43 40 33.20 124 11.67 10.85 12 .05 .4 .6 2.3D 150 15 2008 JAN 15 1918 46.83 38 48.86 122 49.42 2.55 62 .07 .1 .2 2.5D 47 1 2008 JAN 16 0048 30.67 36 13.99 120 22.13 10.01 61 .09 .1 .2 2.5D 43 3 2008 JAN 16 1041 26.02 37 35.85 119 25.04 1.95 56 .10 .2 4.8 2.6D 39 30 2008 JAN 16 1503 3.72 37 23.61 118 34.37 11.95 39 .07 .2 .6 2.2D 85 5 2008 JAN 16 2100 17.94 38 45.42 122 42.24 0.98 41 .10 .2 .3 2.8L 50 1
