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
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 microearthquake of magnitude 2.8, 11 miles WSW of Toms Place, CA at 08:03 AM UTC Monday, 09 18, 2000 (01:03 AM PDT Monday, Sep 18, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.3, 2 miles SW of San Juan Bautista, CA at 11:01 AM UTC Friday, 09 15, 2000 (04:01 AM PDT Friday, Sep 15, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.8, 11 miles WSW of Toms Place, CA at 08:03 AM UTC Monday, 09 18, 2000 (01:03 AM PDT Monday, Sep 18, 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 SEP 14 0101 3.84 36 35.18 121 19.05 9.11 55 .06 .1 .4 STN 2.5D 32 3 WW 2000 SEP 14 0220 58.73 38 48.67 122 46.43 2.77 30 .05 .2 .3 GEY 2.0D 45 2 NN 2000 SEP 14 1651 51.63 38 48.59 122 45.48 1.20 20 .10 .2 .6 GEY 2.2D 51 3 WW 2000 SEP 15 1101 3.76 36 49.61 121 33.51 7.44 55 .09 .2 .3 SJB 2.3D 40 3 NN 2000 SEP 15 1848 18.53 36 22.91 121 1.61 0.56 24 .09 .2 .6 BIT 2.3D 96 5 NN 2000 SEP 16 1550 6.00 36 0.28 120 33.68 5.38 40 .06 .2 .2 SLA 2.6D 76 5 NN 2000 SEP 17 0552 5.09 39 44.75 122 49.83 13.05 32 .06 .1 .4 SAC 2.5D 70 14 NN 2000 SEP 17 1827 34.73 40 22.84 122 9.52 21.29 16 .11 .3 .9 SHA 2.2D 91 19 NN 2000 SEP 18 0010 51.07 38 51.31 122 48.33 1.63 35 .06 .1 .3 GEY 2.2D 38 5 NN 2000 SEP 18 0803 39.29 37 28.43 118 50.86 5.47 34 .06 .3 .8 MOR 2.8D 124 9 NN 2000 SEP 18 1855 53.37 37 31.16 118 49.41 5.53 31 .05 .3 .6 MOR 2.5D 131 5 NN 2000 SEP 19 0533 57.28 38 53.32 122 57.71 3.38 28 .06 .2 .7 MAA 2.0D 37 5 NN 2000 SEP 19 0641 34.51 39 29.75 122 56.74 10.59 25 .06 .2 .4 BAR # 2.1D 43 1 NN 2000 SEP 19 1307 13.65 36 50.60 121 34.47 6.61 43 .10 .2 .4 SJB 2.0D 45 2 WW 2000 SEP 19 1454 36.94 40 2.72 121 1.88 2.51 11 .10 .810.2 ALM - 2.2D 123 51 WW 2000 SEP 19 1711 30.56 36 50.43 121 34.09 6.06 45 .09 .2 .3 SJB 2.2D 43 2 WW 2000 SEP 19 1902 52.86 38 50.20 122 52.67 3.09 18 .06 .2 .8 GEY 2.0D 59 4 WW 2000 SEP 20 0522 37.51 38 21.68 122 23.31 8.41 37 .11 .2 .5 NAP 2.1D 38 5 WW 2000 SEP 20 0528 43.12 39 16.98 122 47.33 9.81 30 .08 .2 .7 BAR 2.4D 70 16 WW 2000 SEP 20 0802 24.85 38 49.54 122 47.96 4.31 23 .04 .2 .4 GEY 2.1D 41 2 WW 2000 SEP 20 0802 26.80 36 36.35 121 12.39 2.65 43 .07 .1 .4 PIN 2.4D 39 4 WW 2000 SEP 20 1255 56.94 38 49.47 122 47.96 0.47 15 .07 .2 .6 GEY 2.0D 46 2 WW 2000 SEP 20 1303 53.88 39 38.56 122 47.70 1.85 14 .08 .3 1.0 SAC 2.2D 88 7 WW 2000 SEP 20 1340 52.31 38 47.17 122 45.02 0.63 18 .06 .2 .6 GEY 2.0D 40 3 WW 2000 SEP 20 1837 7.78 36 33.14 121 5.97 1.59 22 .08 .2 .8 BVL 2.2D 88 5 WW
