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 microearthquake of magnitude 2.8, 20 miles NNE of Redding, CA at 11:00 PM UTC Tuesday, 02 15, 2000 (03:00 PM PST Tuesday, Feb 15, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.0, 6 miles NE of San Martin, CA at 05:28 PM UTC Tuesday, 02 15, 2000 (09:28 AM PST Tuesday, Feb 15, 2000).
The largest event to occur this week in this region was a microearthquake of magnitude 2.1, 11 miles SW of Toms Place, CA at 09:09 AM UTC Wednesday, 02 16, 2000 (01:09 AM PST Wednesday, Feb 16, 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 FEB 10 0718 9.73 37 0.53 118 16.21 12.12 39 .08 .6 .8 OWV 2.8D 155 19 NN 2000 FEB 12 0039 50.36 40 47.29 122 20.68 31.92 15 .15 .4 2.0 SHA # 2.7D 74 21 NN 2000 FEB 12 0259 41.64 36 43.30 121 20.80 10.47 54 .05 .1 .3 STN 2.4D 51 6 NN 2000 FEB 12 1253 50.78 36 7.59 120 18.84 13.97 14 .03 .6 1.6 COA 2.2D 154 22 WW 2000 FEB 12 1712 35.60 40 32.74 124 12.74 10.70 13 .08 .3 .7 EUR 2.2D 139 13 NN 2000 FEB 13 1555 3.30 38 45.37 122 42.65 0.74 23 .10 .2 .9 GEY 2.1D 56 6 NN 2000 FEB 14 0023 3.65 40 44.34 124 29.54 19.59 29 .06 .5 .7 EUR 2.8D 226 45 NN 2000 FEB 14 0202 32.06 38 45.39 122 55.13 5.98 35 .07 .2 .4 ROG 2.3D 42 6 NN 2000 FEB 15 1728 1.09 37 9.40 121 32.72 8.20 77 .06 .1 .2 CYN 2.0D 76 5 NN 2000 FEB 15 2300 20.39 40 52.39 122 18.37 13.06 21 .09 .3 1.4 SHA 2.8D 84 26 NN 2000 FEB 16 0649 15.15 38 47.15 122 46.10 3.05 36 .06 .1 .3 GEY 2.3D 36 3 NN 2000 FEB 16 0909 8.57 37 28.21 118 50.71 7.52 34 .05 .4 .9 MOR 2.1D 182 9 NN 2000 FEB 16 1202 27.96 40 52.33 122 17.21 10.75 12 .03 .3 2.1 SHA 2.1D 141 26 NN 2000 FEB 16 1421 12.87 37 38.84 120 4.53 22.40 17 .10 .9 .6 YOS 2.5D 117 18 NN
