Northern California Seismicity Report for the week ending Jan 11, 2001

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

• 21 M >2.0 earthquakes in Northern and Central California (map) (within dashed polygon of figure).

The largest event to occur this week in this region was a minor earthquake of magnitude 3.3, 15 miles WNW of Punta Gorda, CA at 03:46 PM UTC Friday, 01 05, 2001 (07:46 AM PST Friday, Jan 05, 2001).

• 10 M >1.2 earthquakes in the San Francisco Bay area (map).

The largest event to occur this week in this region was a minor earthquake of magnitude 3.1, 3 miles SSE of San Juan Bautista, CA at 01:25 AM UTC Tuesday, 01 09, 2001 (05:25 PM PST Monday, Jan 08, 2001).

• 9 M >1.2 earthquakes in the Long Valley region (map).

The largest event to occur this week in this region was a microearthquake of magnitude 2.8, 8 miles WSW of Toms Place, CA at 01:17 AM UTC Friday, 01 05, 2001 (05:17 PM PST Thursday, Jan 04, 2001).

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

2001 JAN  4 1512 41.71 38 49.49 122 48.07  4.43 24 .04  .2  .5 GEY    2.1D  42  2 NN
2001 JAN  4 1543 14.47 38 48.55 122 46.34  2.36 38 .07  .1  .3 GEY    2.4D  44  2 NN
2001 JAN  5 0117 27.45 37 31.19 118 49.51  7.85 35 .04  .2  .6 MOR    2.8D  77  8 NN
2001 JAN  5 0533  5.91 38 49.35 122 49.86  0.02 44 .15  .2  .5 GEY  # 2.2D  32  4 NN
2001 JAN  5 1546 52.50 40 20.98 124 36.94 23.60 31 .05  .6  .7 MEN    3.3D 233 28 NN
 
2001 JAN  5 1937  9.14 39 34.71 121 59.12 15.29 20 .13  .4 1.7 SAC    2.4D  75 33 NN
2001 JAN  6 0504 51.73 36 44.88 121 27.67  9.55 55 .12  .2  .4 SJB    2.6D  34  3 NN
2001 JAN  6 0653  0.94 36  2.38 120 35.47  5.27 47 .07  .1  .2 SLA    2.4D  38  3 NN
2001 JAN  6 0721  1.85 36  2.13 120 52.75 10.74 57 .09  .2  .4 ROB    2.4D  33  1 NN
2001 JAN  6 0721 57.51 36  2.07 120 52.53 11.40 61 .12  .2  .9 ROB    2.7D  32  2 NN
 
2001 JAN  6 0917 28.77 36 28.51 121  2.50  2.75 23 .07  .2  .5 BIT    2.1D  73  5 WW
2001 JAN  6 2009  5.62 36 44.86 121 27.60  9.69 58 .12  .2  .4 SJB    2.7D  35  3 NN
2001 JAN  7 1130 16.95 36  2.08 120 52.68 10.45 47 .06  .1  .3 ROB    2.0D  40  1 NN
2001 JAN  8 0101 29.11 38 45.13 122 43.82  2.90 30 .06  .1  .3 GEY    2.1D  45  3 NN
2001 JAN  8 1812  3.03 37  6.66 118 21.12  9.12 33 .05  .4  .8 KAI    2.5D 165 24 NN
 
2001 JAN  9 0125  9.34 36 48.20 121 30.88  5.79 63 .08  .1  .2 SJB    3.1D  35  5 NN
2001 JAN  9 0129  7.05 39 22.36 123  3.11  1.21 30 .38  .519.0 BAR  # 2.1D  51 17 NN
2001 JAN  9 1004  1.47 36 48.04 121 30.62  5.29 52 .09  .1  .3 SJB    2.7D  34  5 NN
2001 JAN  9 1531 28.78 38 48.45 122 46.20  3.02 18 .04  .2  .5 GEY    2.1D  60  2 WW
2001 JAN 10 0206 28.70 36 54.77 121 38.27  5.90 54 .07  .1  .3 SJB    2.4D  31  5 WW
 
2001 JAN 10 1927 56.45 40 59.20 121 41.05  4.99  8 .06  .4 8.0 SHA -  2.6D  83 27 WW