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 2.6, 8 miles E of Coalinga, CA at 08:47 AM UTC Sunday, 10 22, 2000 (01:47 AM PDT Sunday, Oct 22, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.1, 3 miles S of Gilroy, CA at 06:24 PM UTC Wednesday, 10 25, 2000 (11:24 AM PDT Wednesday, Oct 25, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.1, 8 miles WSW of Toms Place, CA at 08:21 AM UTC Saturday, 10 21, 2000 (01:21 AM PDT Saturday, Oct 21, 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 OCT 20 0018 1.29 38 48.19 122 46.15 2.52 23 .06 .2 .5 GEY 2.2D 44 2 WW 2000 OCT 21 0537 53.83 37 22.83 119 47.45 10.61 14 .09 .4 1.1 KAI 2.5D 108 31 WW 2000 OCT 21 0821 51.32 37 32.00 118 48.98 6.45 32 .07 .3 .7 MOR 2.1D 156 4 WW 2000 OCT 21 2202 35.38 36 8.29 120 12.66 9.91 21 .05 .2 .4 COA 2.4D 91 13 WW 2000 OCT 21 2329 23.07 36 8.13 120 12.87 7.19 11 .06 .2 .5 COA 2.2D 173 13 WW 2000 OCT 22 0847 49.03 36 8.17 120 13.13 8.68 24 .07 .2 .4 COA 2.6D 86 13 WW 2000 OCT 22 1012 17.81 36 9.01 120 12.57 5.18 9 .02 .3 .4 COA 2.3D 171 13 WW 2000 OCT 24 0359 34.36 39 24.56 123 5.29 1.23 14 .05 .3 8.7 BAR - 2.0D 91 17 WW 2000 OCT 25 1817 46.46 36 41.19 121 16.73 4.94 44 .07 .2 .4 PAI 2.6D 53 2 WW 2000 OCT 25 1824 58.86 36 57.50 121 34.32 7.09 53 .15 .2 .5 SAR 2.1D 22 1 WW
