Northern California Seismicity Report for the week ending Mar 08, 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

• 15 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 microearthquake of magnitude 2.9, 13 miles E of Rio Dell, CA at 06:22 PM UTC Thursday, 03 01, 2001 (10:22 AM PST Thursday, Mar 01, 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 microearthquake of magnitude 2.1, 2 miles ESE of Dublin, CA at 06:22 PM UTC Wednesday, 03 07, 2001 (10:22 AM PST Wednesday, Mar 07, 2001).

• 14 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 2.1, 8 miles WSW of Toms Place, CA at 03:23 PM UTC Wednesday, 03 07, 2001 (07:23 AM PST Wednesday, Mar 07, 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 MAR  1 0033 44.51 38 46.37 122 44.55  2.82 28 .06  .1  .4 GEY    2.0D  33  2 NN
2001 MAR  1 1111 53.42 41  1.77 122  0.04  8.24 18 .07  .3 2.5 SHA    2.0D  74 24 NN
2001 MAR  1 1112 18.29 36 28.73 121  2.86  3.46 50 .07  .1  .3 BIT    2.5D  56  4 NN
2001 MAR  1 1822 48.62 40 29.90 123 50.90 22.57 18 .09  .3  .4 EUR    2.9D  91  8 NN
2001 MAR  1 2155 55.09 38 47.38 122 46.30  2.44 34 .05  .1  .3 GEY    2.0D  59  3 NN
 
2001 MAR  1 2206 48.31 38 49.43 122 48.11  4.64 33 .06  .2  .3 GEY    2.1D  47  2 NN
2001 MAR  3 0213 31.82 37 40.05 119 25.09 15.59 38 .07  .3  .9 KAI    2.3D  69 30 NN
2001 MAR  4 0325  3.33 38 44.76 122 44.30  2.45 15 .04  .2  .4 GEY    2.0D  50  4 WW
2001 MAR  4 1852 37.42 39  9.14 123 36.27  6.91 18 .08  .4  .6 PAR    2.1D 171  6 NN
2001 MAR  6 0933 51.96 37  3.73 120 24.03  3.66  8 .07  .6 1.2 JQN    2.0D 156 36 NN
 
2001 MAR  6 1712 28.36 38 49.76 122 48.31  1.05 15 .04  .2  .5 GEY    2.1D  51  3 WW
2001 MAR  7 1523  9.64 37 32.14 118 48.84  5.98 31 .05  .3  .6 MOR    2.1D 110  6 WW
2001 MAR  7 1615  3.78 36 37.16 121 13.47  5.18 42 .06  .1  .4 PIN    2.3D  56  6 WW
2001 MAR  7 1717 45.03 38 46.47 122 44.47  3.38 27 .07  .2  .4 GEY    2.5D  64  2 WW
2001 MAR  7 1822 13.32 37 41.57 121 54.06  9.00 35 .11  .2  .3 DAN    2.1D  58  7 WW