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 3.6, 0 miles SW of Concord, CA at 11:56 AM UTC Saturday, 07 15, 2000 (04:56 AM PDT Saturday, Jul 15, 2000).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.6, 0 miles SW of Concord, CA at 11:56 AM UTC Saturday, 07 15, 2000 (04:56 AM PDT Saturday, Jul 15, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.2, 9 miles WSW of Toms Place, CA at 04:35 PM UTC Tuesday, 07 18, 2000 (09:35 AM PDT Tuesday, Jul 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 JUL 13 1216 30.35 38 42.45 122 32.33 4.56 19 .13 .3 1.9 GVL 2.0D 74 9 WW 2000 JUL 14 0008 2.58 41 0.52 123 30.18 28.15 13 .06 .3 1.2 KLA 2.5D 97 24 NN 2000 JUL 14 0046 1.24 36 58.98 121 38.41 4.66 64 .08 .1 .3 SAR 2.2D 39 6 NN 2000 JUL 15 1151 53.88 39 20.87 123 1.91 8.46 42 .09 .2 .7 BAR 2.8D 58 19 NN 2000 JUL 15 1156 38.98 37 58.48 122 2.04 15.32 77 .15 .2 .3 CON 3.6D 71 7 NN 2000 JUL 15 2220 27.68 37 29.47 118 50.19 0.27 27 .08 .2 .4 MOR 2.2D 120 7 WW 2000 JUL 15 2325 19.47 37 37.66 118 53.42 8.45 25 .07 .3 .4 SMO 2.0D 80 1 WW 2000 JUL 16 0759 26.55 36 49.32 121 32.87 6.40 58 .09 .2 .3 SJB 2.8D 26 3 NN 2000 JUL 16 0838 16.86 36 49.44 121 32.87 6.27 50 .09 .2 .3 SJB 2.1D 26 3 NN 2000 JUL 16 1056 11.59 35 45.22 119 47.74 25.12 13 .09 .6 .9 BAK 2.4D 93 19 WW 2000 JUL 16 1234 5.49 36 43.33 121 21.75 3.25 59 .07 .1 .2 STN 2.7D 37 2 NN 2000 JUL 16 1918 49.49 36 43.45 121 21.78 3.43 62 .08 .2 .3 STN 3.5D 38 2 NN 2000 JUL 17 0141 3.84 39 45.77 122 4.48 26.55 20 .23 .7 1.7 SAC 2.6D 83 30 WW 2000 JUL 17 1619 28.66 39 13.22 123 5.40 7.12 31 .06 .2 .6 MAA 2.3D 55 10 NN 2000 JUL 17 1733 7.91 40 44.31 124 10.52 22.31 19 .04 .4 .9 EUR 2.2D 165 32 NN 2000 JUL 18 0523 5.22 36 31.14 121 6.01 4.84 51 .05 .1 .2 PIN 2.5D 48 2 NN 2000 JUL 18 1635 8.35 37 29.93 118 50.05 7.76 17 .05 .3 1.6 MOR 2.2D 122 10 WW 2000 JUL 19 0412 6.03 37 29.79 118 48.60 1.47 17 .05 .6 .8 MOR 2.1D 215 5 WW 2000 JUL 19 2153 33.55 36 33.59 121 3.37 9.87 61 .12 .2 .3 BVL 3.3L 48 3 WW
