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 minor earthquake of magnitude 3.0, 0 miles es) of of San Clemente Island, CA at 10:49 PM UTC Saturday, 07 03, 1920 (03:49 PM PDT Saturday, Jul 03, 1920).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.0, 0 miles es) of of San Clemente Island, CA at 10:49 PM UTC Saturday, 07 03, 1920 (03:49 PM PDT Saturday, Jul 03, 1920).
The largest event to occur this week in this region was an earthquake of magnitude 2.6, 12 miles SW of Toms Place, CA at 01:51 AM UTC Friday, 03 02, 2007 (05:51 PM PST Thursday, Mar 01, 2007).
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 2007 MAR 1 0815 6.49 40 35.93 123 18.86 25.35 12 .07 .5 1.3 2.1D 112 18 2007 MAR 1 1704 44.63 37 20.42 121 42.38 8.22 85 .06 .1 .3 2.5D 34 6 2007 MAR 1 1707 13.68 37 20.56 121 42.46 8.06 69 .06 .1 .3 2.4D 39 6 2007 MAR 1 1709 43.85 37 20.44 121 42.43 8.29 17 .03 .3 .5 2.9D 57 6 2007 MAR 1 1714 39.10 37 20.73 121 42.59 8.21 68 .05 .1 .3 2.2D 39 6 2007 MAR 1 2012 0.98 37 19.43 122 6.23 0.01 28 .08 .131.6 2.2D 44 2 2007 MAR 2 0151 30.25 37 26.93 118 50.53 9.24 46 .08 .3 .9 2.6D 79 12 2007 MAR 2 0440 0.75 37 53.79 122 6.68 16.22152 .20 .2 .3 4.2W 29 3 2007 MAR 2 0446 13.41 37 53.89 122 6.68 15.29111 .16 .2 .2 42 3 2007 MAR 2 0744 45.98 35 48.04 121 25.01 6.69 36 .31 1.0 1.3 2.2D 193 12 2007 MAR 2 0928 24.43 38 46.38 122 43.60 1.42 27 .18 .3 .9 3.0L 27 1 2007 MAR 2 0928 30.83 38 46.60 122 43.37 3.54 32 .06 .2 .7 3.0L 47 7 2007 MAR 3 1846 57.67 38 47.78 122 45.78 2.49 33 .05 .1 .3 2.5D 43 3 2007 MAR 3 2319 48.45 37 33.69 121 50.14 9.27118 .16 .1 .3 2.7D 42 5 2007 MAR 4 0356 59.26 39 28.17 123 6.90 1.65 21 .07 .2 3.7 2.0D 47 12 2007 MAR 4 0511 41.61 38 49.61 122 48.14 3.99 30 .05 .2 .6 2.2D 38 2 2007 MAR 4 2117 29.12 40 8.22 123 48.96 21.36 19 .09 .3 .4 2.2D 117 12 2007 MAR 4 2127 31.71 35 49.82 120 22.18 4.87 16 .07 .5 .8 2.3D 94 1 2007 MAR 5 1151 50.58 40 43.89 121 26.47 7.57 16 .06 .3 1.0 2.2D 113 10 2007 MAR 5 1335 58.48 36 2.98 120 37.72 6.63 22 .18 .5 1.0 2.1D 68 8 2007 MAR 5 1527 46.32 38 3.57 121 52.94 17.30 68 .16 .3 .3 2.9D 150 12 2007 MAR 5 2126 56.29 38 4.24 121 52.46 15.99 43 .25 .3 .6 2.5D 59 11 2007 MAR 6 1122 27.18 38 45.15 122 42.58 2.87 38 .10 .1 .6 2.9D 40 2 2007 MAR 6 1237 25.22 40 43.41 121 26.01 1.45 11 .08 .331.6 2.3D 121 11 2007 MAR 6 1501 15.34 39 28.20 123 6.29 5.26 13 .04 .3 2.0 2.0D 68 15 2007 MAR 6 2037 19.38 39 34.28 123 26.11 0.04 18 .18 .4 3.5 2.3D 113 18 2007 MAR 7 0322 45.23 36 36.41 121 13.21 7.99 31 .06 .2 .5 2.0D 47 4 2007 MAR 7 0454 43.18 39 34.15 123 25.86 0.08 30 .17 .3 2.1 2.6D 113 18 2007 MAR 7 1314 45.06 37 55.99 122 3.19 10.40 78 .13 .2 .3 2.7D 64 5 2007 MAR 7 1614 55.20 36 39.85 121 17.21 5.94 46 .05 .1 .4 2.3D 39 1 2007 MAR 7 1640 53.07 36 45.81 121 16.35 8.75 72 .08 .1 .2 47 4 2007 MAR 7 2106 3.87 36 45.77 121 16.27 8.46 54 .06 .2 .3 2.2D 46 6
