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
Information about seismicity for other regions is available from the U.S. Geological Survey Earthquake Hazards Program Website. 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 provided at the Northern California Maps of Recent Earthquake Activity website. 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 3.3, 9 miles S of Tres Pinos, CA at 10:39 PM UTC Thursday, 01 05, 2006 (02:39 PM PST Thursday, Jan 05, 2006).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.2, 7 miles SE of San Juan Bautista, CA at 09:06 PM UTC Monday, 01 09, 2006 (01:06 PM PST Monday, Jan 09, 2006).
The largest event to occur this week in this region was a microearthquake of magnitude 1.9, 3 miles S of Toms Place, CA at 03:32 PM UTC Thursday, 01 05, 2006 (07:32 AM PST Thursday, Jan 05, 2006).
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 2006 JAN 5 1405 49.76 37 5.38 122 3.12 10.72 96 .16 .2 .4 MON 3.1L 114 10 AN 2006 JAN 5 1432 13.24 40 13.43 124 10.09 7.34 9 .01 .6 1.9 MEN 2.5D 209 22 XX 2006 JAN 5 1958 3.56 37 25.70 121 50.17 2.43 72 .07 .1 .4 ALU 2.4D 27 4 NN 2006 JAN 5 2104 41.49 38 47.12 122 46.54 1.58 43 .07 .1 .2 GEY 2.5D 36 1 AA 2006 JAN 5 2126 40.29 38 48.28 122 47.85 3.52 60 .10 .1 .2 GEY 3.1L 24 0 AA 2006 JAN 5 2239 21.58 36 40.15 121 17.45 6.19 64 .06 .1 .3 STN 3.3L 39 2 NN 2006 JAN 6 0437 1.59 38 22.73 122 12.46 7.42 55 .24 .3 .9 GVL 2.3D 60 8 AW 2006 JAN 6 0558 19.81 36 40.01 121 17.31 6.46 61 .07 .1 .4 STN 3.2L 40 1 NN 2006 JAN 6 0655 10.68 36 40.07 121 17.43 5.96 51 .05 .1 .4 STN 2.2D 39 2 NN 2006 JAN 6 0736 7.14 38 47.65 122 45.31 2.28 47 .09 .1 .2 GEY 2.7D 32 3 AA 2006 JAN 6 0745 10.63 37 58.64 122 2.62 16.30 66 .14 .3 .3 CON 2.3D 53 6 AW 2006 JAN 6 1603 45.04 36 6.73 120 38.14 4.37 44 .11 .2 .7 SLA 2.2D 48 13 KK 2006 JAN 6 1903 52.82 35 31.97 120 50.23 8.16 39 .07 .2 1.0 SSM 2.1D 77 12 KX 2006 JAN 6 1952 42.27 40 18.79 124 5.80 32.46 12 .06 .5 1.2 MEN 2.8D 106 12 XX 2006 JAN 6 2115 38.27 37 58.75 122 2.55 16.33 50 .11 .2 .3 CON 2.1D 77 6 AW 2006 JAN 7 1840 26.52 38 48.72 122 47.64 3.65 41 .08 .2 .3 GEY 2.1D 33 0 AA 2006 JAN 7 2321 8.20 38 47.25 122 46.23 2.07 44 .07 .2 .2 GEY 2.1D 33 2 AA 2006 JAN 8 0130 26.95 40 3.80 123 15.48 5.96 16 .17 .3 1.5 MEN 2.1D 63 20 XX 2006 JAN 8 0615 41.38 38 49.88 122 48.10 2.43 40 .06 .2 .2 GEY 2.2D 39 1 AA 2006 JAN 8 1015 12.13 38 49.92 122 47.98 2.10 50 .10 .2 .2 GEY 2.8D 40 1 AA 2006 JAN 9 0527 55.48 37 14.99 118 10.84 11.20 37 .07 .3 .7 DEV 2.4D 166 15 IQ 2006 JAN 9 2106 47.65 36 45.76 121 27.78 6.98 68 .11 .2 .3 SJB 3.2L 34 1 NN 2006 JAN 9 2329 6.07 36 13.71 121 44.55 18.23 22 .09 .7 .6 SUR 2.1D 225 18 NN 2006 JAN 9 2342 25.09 36 45.86 121 27.96 6.64 57 .09 .1 .3 SJB 2.4D 34 2 NN
