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@usgs.gov
The report no longer includes maps showing earthquakes for the entire US or world. Those maps are now available from the U.S.G.S. National Earthquake Information Center. 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 contained on the real-time earthquake web page. 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 3.9, 10 miles NW of Punta Gorda, CA at 06:17 PM UTC Sunday, 08 13, 2000 (11:17 AM PDT Sunday, Aug 13, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.5, 3 miles E of Union City, CA at 02:30 PM UTC Tuesday, 08 15, 2000 (07:30 AM PDT Tuesday, Aug 15, 2000).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.1, 4 miles SE of Toms Place, CA at 09:07 PM UTC Tuesday, 08 15, 2000 (02:07 PM PDT Tuesday, Aug 15, 2000).
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 2000 AUG 10 1415 15.51 35 8.00 120 45.25 0.24 37 .10 .3 3.0 SSM # 3.4D 156 17 NN 2000 AUG 10 1524 13.88 35 58.99 120 32.65 4.28 33 .07 .2 .3 MID 2.2D 133 5 NN 2000 AUG 10 1951 51.64 39 20.76 123 1.90 7.47 40 .11 .2 .8 BAR 2.4D 57 19 NN 2000 AUG 11 0743 32.82 39 20.62 123 1.74 9.02 48 .13 .2 .7 BAR 3.0D 58 19 NN 2000 AUG 11 0759 57.44 39 21.07 123 2.04 9.61 40 .07 .1 .6 BAR 2.1D 55 18 NN 2000 AUG 11 0835 10.58 40 8.43 123 50.50 20.88 21 .11 .4 .3 MEN 2.0D 125 6 NN 2000 AUG 12 0058 33.53 41 14.84 122 19.04 15.63 13 .04 .3 .7 SHA 2.4D 89 15 NN 2000 AUG 12 2307 17.08 39 20.63 123 1.84 7.94 45 .13 .2 .9 BAR 2.8D 56 19 NN 2000 AUG 13 1817 48.54 40 21.94 124 29.21 16.88 30 .07 .8 .5 MEN 3.9D 225 32 WW 2000 AUG 13 2348 11.12 40 20.18 123 46.71 17.75 9 .08 1.1 1.8 MEN 2.1D 122 30 WW 2000 AUG 14 0606 47.11 36 29.84 121 4.29 3.39 24 .06 .2 .6 BIT 2.1D 96 1 WW 2000 AUG 14 1619 20.72 39 20.48 123 1.76 9.18 40 .13 .2 .9 BAR 3.0D 57 19 WW 2000 AUG 14 1818 0.05 39 20.45 123 1.93 9.13 44 .15 .2 .8 BAR 3.1D 57 19 WW 2000 AUG 14 1912 11.86 39 20.80 123 2.15 0.50 32 .16 .3 4.6 BAR 2.4D 57 19 WW 2000 AUG 15 0600 4.65 39 20.56 123 1.81 5.55 13 .04 .3 1.4 BAR 2.2D 108 19 WW 2000 AUG 15 1349 47.21 38 47.80 122 45.74 1.06 20 .06 .2 .5 GEY 2.2D 44 3 WW 2000 AUG 15 1430 9.29 37 35.81 121 58.30 8.54 66 .14 .2 .4 HAY 2.5D 35 1 WW 2000 AUG 15 2107 5.51 37 31.13 118 38.33 12.29 27 .07 .3 1.0 CAS 3.1D 74 8 WW 2000 AUG 16 0011 28.28 39 27.44 123 10.73 4.32 28 .07 .2 1.0 BAR 2.5D 45 11 WW 2000 AUG 16 0511 12.05 39 27.32 123 10.66 4.48 21 .06 .2 1.1 BAR 2.2D 45 12 WW 2000 AUG 16 0823 49.06 38 48.51 122 46.60 1.73 12 .02 .2 1.1 GEY 2.0D 71 6 WW
