Northern California Seismicity Report for the week ending Nov 22, 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

• 22 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, 4 miles SSW of Saratoga, CA at 07:47 PM UTC Sunday, 11 18, 2001 (11:47 AM PST Sunday, Nov 18, 2001).

• 21 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 3.3, 4 miles SSW of Saratoga, CA at 07:47 PM UTC Sunday, 11 18, 2001 (11:47 AM PST Sunday, Nov 18, 2001).

• 13 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 2.2, 7 miles WNW of Toms Place, CA at 10:09 AM UTC Monday, 11 19, 2001 (02:09 AM PST Monday, Nov 19, 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 NOV 15 1050 58.75 37 35.49 122 27.35  8.34 56 .05  .2  .3 SFP    2.5D 104  4 NN
2001 NOV 15 1858  6.03 36 48.67 121 31.73  5.95 49 .09  .2  .3 SJB    2.4D  35  3 WW
2001 NOV 16 0307 59.48 36 29.83 121  4.25  3.31 28 .05  .2  .8 BIT    2.3D  68  9 WW
2001 NOV 16 0911 30.65 37  3.86 121 52.97 13.64 70 .08  .2  .3 LOM    3.1L 102  7 WW
2001 NOV 16 1249 53.13 37 45.40 121 56.87  8.69 58 .08  .1  .2 DAN    2.3D  86 11 NN
 
2001 NOV 16 1936 40.64 38 48.93 122 48.79  4.91 16 .04  .2  .8 GEY    2.3D  71  8 WW
2001 NOV 17 1852  8.64 38 48.73 122 49.71  1.25 17 .04  .2  .5 GEY    2.1D  44  3 WW
2001 NOV 17 1852 35.54 38 48.73 122 49.68  0.20 14 .04  .3 1.0 GEY    2.2D  68  3 WW
2001 NOV 18 1508 42.51 38 20.90 122 23.11  1.08 48 .37  .4 7.9 NAP  # 2.5D  40 15 WW
2001 NOV 18 1947 21.50 37 12.39 122  3.56 13.69 71 .12  .2  .4 BLM    3.3L 107  7 WW
 
2001 NOV 18 2008 38.19 40 52.19 124  6.10 27.03 11 .09  .7 2.9 EUR    2.6D 174 31 WW
2001 NOV 19 0043 52.05 38 49.13 122 47.57  4.87 35 .07  .2  .4 GEY    3.3L  38  1 WW
2001 NOV 19 0116  4.61 38 49.99 122 47.61  0.04 32 .46  .5 1.8 GEY  # 2.3D  41  3 WW
2001 NOV 19 0118 31.62 40 17.49 121 21.18  7.99 17 .04  .2  .7 ALM    2.5D 102 13 NN
2001 NOV 19 0205 30.73 36 37.99 121 14.95 10.35 50 .06  .1  .3 STN    2.7D  60  4 WW
 
2001 NOV 19 0518 56.09 37  4.10 121 53.20 13.79 44 .07  .2  .3 LOM    2.0D 119  4 WW
2001 NOV 19 1009 25.11 37 35.43 118 48.10  6.38 32 .07  .3  .5 MOR    2.2D  77  2 NN
2001 NOV 21 0030  5.24 37 14.63 121 37.44  8.24 44 .08  .2  .5 SFL    2.0D  59  5 WW
2001 NOV 21 0541 31.32 38 46.78 122 43.34  2.70 18 .08  .3  .5 GEY    2.5D  79  1 WW
2001 NOV 21 0544 59.24 36 51.31 121 24.96  4.16 39 .08  .2  .4 HOL    2.2D  43  1 WW
 
2001 NOV 21 0547  3.80 38 47.67 122 46.95  3.15 20 .08  .2  .6 GEY    2.6D  67  2 WW
2001 NOV 21 2000 20.22 38 51.27 122 48.49  1.42 13 .03  .2  .8 GEY    2.0D  68  5 WW