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 3.0, 10 miles N of Laytonville, CA at 12:06 PM UTC Friday, 09 08, 2000 (05:06 AM PDT Friday, Sep 08, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.6, 3 miles WSW of Yountville, CA at 12:37 PM UTC Sunday, 09 10, 2000 (05:37 AM PDT Sunday, Sep 10, 2000).
The largest event to occur this week in this region was an earthquake of magnitude 2.4, 10 miles WSW of Toms Place, CA at 11:38 AM UTC Friday, 09 08, 2000 (04:38 AM PDT Friday, Sep 08, 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 7 1131 49.87 36 8.35 121 16.88 8.36 50 .08 .2 .6 SAL 2.6D 83 12 WW 2000 SEP 7 1348 13.54 38 47.67 122 43.67 1.94 20 .08 .2 .5 GEY 2.2D 43 3 WW 2000 SEP 8 0112 52.10 39 21.28 123 2.49 4.12 18 .07 .3 2.0 BAR 2.2D 66 18 WW 2000 SEP 8 0353 54.44 39 22.21 123 3.00 6.35 19 .05 .2 1.1 BAR 2.1D 66 17 WW 2000 SEP 8 1138 45.28 37 28.69 118 50.29 3.24 33 .06 .3 1.2 MOR 2.4D 123 8 WW 2000 SEP 8 1206 50.22 39 50.35 123 30.31 5.45 14 .05 .2 .5 MAA 3.0D 117 4 WW 2000 SEP 8 1847 16.17 38 46.91 122 42.89 2.64 35 .11 .2 .4 GEY 2.6D 46 1 WW 2000 SEP 8 2201 20.87 36 2.76 120 36.95 2.13 21 .12 .3 1.0 SLA 2.4D 84 3 WW 2000 SEP 9 0302 16.39 37 39.03 122 2.69 5.04 40 .05 .1 .3 HAY 2.0D 86 3 WW 2000 SEP 9 0549 3.94 40 52.02 122 18.57 8.17 17 .08 .3 2.8 SHA 2.5D 86 27 WW 2000 SEP 9 0555 27.46 40 53.08 122 17.91 15.36 13 .13 .5 2.9 SHA 2.4D 111 25 WW 2000 SEP 9 1359 57.02 38 46.48 122 42.89 3.05 18 .06 .2 .5 GEY 2.2D 49 0 WW 2000 SEP 10 1115 48.02 36 1.95 120 35.03 5.02 27 .05 .2 .3 SLA 2.3D 96 4 WW 2000 SEP 10 1237 19.39 38 22.87 122 24.64 5.62 44 .19 .2 .5 NAP 2.6D 34 3 WW 2000 SEP 10 1513 26.57 37 32.50 118 48.76 6.55 30 .06 .3 .8 MOR 2.1D 107 4 WW 2000 SEP 10 2244 11.50 38 46.92 122 26.71 7.16 19 .13 .4 .6 GVL 2.0D 48 3 WW 2000 SEP 10 2326 38.12 37 29.38 118 50.10 4.21 23 .07 .4 1.4 MOR 2.1D 179 7 WW 2000 SEP 11 1351 44.44 38 32.37 122 46.20 4.62 43 .13 .2 .6 ROG 2.5D 38 4 WW 2000 SEP 11 1507 40.23 36 52.44 121 36.23 5.87 37 .13 .3 .5 SJB 2.5D 51 2 WW 2000 SEP 11 1618 43.71 38 32.49 122 46.12 4.47 39 .13 .2 .6 ROG 2.2D 38 4 WW 2000 SEP 11 1718 45.24 35 41.36 119 43.59 26.75 23 .36 .9 3.3 BAK 2.6D 72 28 WW 2000 SEP 12 0655 26.19 37 33.20 121 40.61 5.16 52 .07 .2 .6 HAM 2.5D 94 9 WW 2000 SEP 12 0954 38.46 36 24.92 120 59.45 9.63 51 .06 .2 .5 BIT 2.8D 75 13 WW 2000 SEP 13 0345 54.07 39 50.60 123 30.11 5.90 8 .03 .8 .5 MAA 2.1D 150 4 WW 2000 SEP 13 0837 17.73 39 19.62 123 1.14 5.25 32 .11 .2 1.2 BAR 2.6D 57 20 WW 2000 SEP 13 1754 11.71 40 51.50 122 19.54 4.59 8 .02 .7 7.3 SHA - 2.0D 177 28 WW 2000 SEP 13 1755 21.29 40 52.34 122 16.95 4.02 11 .09 .5 9.1 SHA - 2.1D 141 26 WW 2000 SEP 13 1803 28.35 35 47.93 121 21.98 4.43 17 .04 .7 .6 SSM 2.2D 231 11 WW
