Northern California Seismicity Report for the week ending Jun 14, 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

• 13 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 3.6, 20 miles WNW of Ferndale, CA at 11:38 PM UTC Thursday, 06 07, 2001 (04:38 PM PDT Thursday, Jun 07, 2001).

• 11 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, 4 miles SSW of Hollister, CA at 09:36 PM UTC Wednesday, 06 13, 2001 (02:36 PM PDT Wednesday, Jun 13, 2001).

• 7 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 2.5, 10 miles WSW of Toms Place, CA at 09:35 AM UTC Tuesday, 06 12, 2001 (02:35 AM PDT Tuesday, Jun 12, 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 JUN  7 1821  3.97 36  4.93 120 38.26  3.41 40 .09  .2  .4 SLA    2.8D  71  4 WW
2001 JUN  7 2338 13.72 40 39.47 124 38.14 12.12 52 .10  .7 1.2 EUR    3.6L 234 53 WW
2001 JUN  8 0638 55.37 38 46.57 122 43.21  2.69 26 .08  .2  .4 GEY    2.5D  44  0 WW
2001 JUN  8 1922 55.16 37 35.31 121 58.14  7.69 51 .09  .2  .3 HAY    2.2D  31  2 WW
2001 JUN  8 2023  7.28 40 31.48 123 31.99  6.62 10 .24 1.2 1.6 EUR    2.1D 118 27 WW
 
2001 JUN  9 1448 29.95 37 28.45 118 50.21  4.10 30 .07  .3  .9 MOR    2.4D 130  8 WW
2001 JUN  9 1830 21.96 38 49.37 122 46.07  2.98 17 .03  .2  .6 GEY    2.1D  51  3 WW
2001 JUN 10 1409 23.51 37 28.47 118 50.23  3.95 24 .05  .3 1.1 MOR    2.1D 130  8 WW
2001 JUN 11 0529 37.78 36 35.19 121 11.25  6.31 39 .05  .2  .4 PIN    2.1D  37  1 WW
2001 JUN 11 1912 58.72 38 48.30 122 44.99  0.04 18 .50  .9 2.9 GEY  # 2.1D  52  4 WW
 
2001 JUN 12 0935  2.18 37 28.87 118 50.14  4.30 21 .06  .4  .9 MOR    2.5D 127  8 WW
2001 JUN 12 2219 37.66 36 27.97 121  2.56  5.62 33 .06  .2  .6 BIT    2.0D  72  5 WW
2001 JUN 13 2136 14.28 36 47.62 121 25.45 11.81 81 .13  .2  .3 HOL    3.1L  31  5 WW