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 3.0, 3 miles SW of Orinda, CA at 11:19 PM UTC Friday, 10 10, 2008 (04:19 PM PDT Friday, Oct 10, 2008).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.0, 3 miles SW of Orinda, CA at 11:19 PM UTC Friday, 10 10, 2008 (04:19 PM PDT Friday, Oct 10, 2008).
The largest event to occur this week in this region was a microearthquake of magnitude 1.7, 7 miles ESE of Mammoth Lakes, CA at 04:32 PM UTC Monday, 10 13, 2008 (09:32 AM PDT Monday, Oct 13, 2008).
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 2008 OCT 9 0635 57.16 40 38.02 123 46.88 29.18 23 .19 .3 1.3 2.7D 84 23 2008 OCT 9 2151 4.22 38 48.22 122 48.00 1.19 55 .07 .1 .2 2.5D 26 1 2008 OCT 9 2151 28.96 38 48.10 122 48.05 1.77 16 .07 .2 .3 2.0D 65 1 2008 OCT 10 0619 51.02 38 49.71 122 47.47 2.40 67 .08 .1 .2 2.6D 37 1 2008 OCT 10 1323 44.88 40 18.58 124 34.20 19.94 21 .08 1.0 .2 3.0L 231 23 2008 OCT 10 1345 16.80 35 15.78 120 52.99 4.74 49 .16 .3 .2 2.1D 93 0 2008 OCT 10 1815 59.87 38 49.35 122 48.18 2.51 54 .08 .1 .2 2.7D 35 1 2008 OCT 10 2319 10.91 37 50.19 122 12.92 12.65 93 .11 .1 .3 3.0L 25 5 2008 OCT 11 0602 16.66 36 28.62 121 3.38 7.47 45 .06 .2 .4 2.3D 56 4 2008 OCT 11 0736 32.75 38 46.91 122 44.79 0.02 33 .07 .1 .4 2.5D 36 1 2008 OCT 11 1303 24.37 36 35.26 121 11.01 3.56 61 .08 .1 .3 2.2D 32 2 2008 OCT 12 0117 8.51 36 24.51 120 59.24 5.64 56 .06 .1 .4 2.3D 67 3 2008 OCT 12 0254 27.40 38 49.16 122 48.67 2.43 48 .08 .2 .2 2.3D 35 0 2008 OCT 12 1612 42.94 38 49.70 122 50.58 0.48 24 .10 .3 .4 2.1D 61 1 2008 OCT 13 0902 27.38 38 49.58 122 48.27 3.64 59 .07 .2 .2 2.5D 80 1 2008 OCT 13 0903 37.78 38 49.62 122 48.21 3.71 44 .06 .2 .2 2.3D 80 1 2008 OCT 13 2251 0.40 36 47.12 121 17.44 9.35 53 .06 .2 .3 2.1D 45 4 2008 OCT 14 0141 46.72 37 33.06 118 24.87 5.85 39 .06 .2 .4 2.2D 94 3 2008 OCT 14 0830 7.90 39 27.07 122 28.25 14.37 31 .20 .3 .5 2.6D 35 11 2008 OCT 14 1109 3.36 35 43.54 121 2.78 6.82 58 .08 .1 .4 2.2D 46 8
