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 3.2, 5 miles NW of Avenal, CA at 09:38 PM UTC Tuesday, 06 27, 2006 (02:38 PM PDT Tuesday, Jun 27, 2006).
The largest event to occur this week in this region was a microearthquake of magnitude 2.9, 7 miles ENE of San Martin, CA at 06:56 AM UTC Friday, 06 23, 2006 (11:56 PM PDT Thursday, Jun 22, 2006).
The largest event to occur this week in this region was a microearthquake of magnitude 2.0, 6 miles WSW of Mammoth Lakes, CA at 04:26 PM UTC Monday, 06 26, 2006 (09:26 AM PDT Monday, Jun 26, 2006).
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 2006 JUN 22 1418 46.66 38 49.13 122 48.20 1.89 28 .07 .2 .3 GEY 2.0D 41 2 YW 2006 JUN 23 0624 38.66 36 34.05 121 9.30 3.83 30 .05 .2 .5 PIN 2.2D 42 3 WW 2006 JUN 23 0656 24.66 37 6.32 121 29.43 3.23 89 .06 .1 .2 CYN 2.9D 65 3 NN 2006 JUN 23 0819 14.64 38 46.38 122 43.21 1.93 31 .08 .2 .3 GEY 2.4D 38 0 WW 2006 JUN 23 1125 20.51 35 50.45 120 23.38 2.85 22 .38 .6 1.1 GOL 2.3D 56 1 WW 2006 JUN 23 1400 11.15 36 35.17 121 11.16 6.92 43 .04 .1 .3 PIN 2.2D 50 1 NN 2006 JUN 23 1546 1.03 38 49.22 122 48.86 3.31 56 .08 .2 .2 GEY 2.4D 36 1 AA 2006 JUN 24 0444 44.98 36 27.83 121 2.45 6.73 57 .07 .2 .3 BIT 2.6D 58 5 NN 2006 JUN 24 1011 26.86 35 33.85 120 49.77 6.80 22 .04 .4 .7 SSM 2.2D 152 9 WW 2006 JUN 24 1033 58.03 38 47.77 122 45.87 2.09 51 .07 .1 .2 GEY 2.2D 34 1 AA 2006 JUN 25 0204 56.43 38 58.91 122 55.70 2.01 12 .08 .3 9.5 MAA - 2.1D 68 10 WW 2006 JUN 25 0844 14.06 35 51.07 121 7.19 5.93 45 .10 .3 .6 SSM 2.0D 140 7 XX 2006 JUN 25 2320 57.43 36 48.24 121 31.61 6.85 62 .09 .2 .2 SJB 2.3D 35 3 NN 2006 JUN 26 0437 45.10 41 1.48 123 26.16 32.31 10 .09 .6 1.5 KLA 2.5D 121 28 WW 2006 JUN 26 2211 3.89 38 49.10 122 47.63 3.59 41 .07 .2 .3 GEY 2.2D 39 1 WW 2006 JUN 27 1940 38.10 36 11.62 120 45.93 8.91 59 .08 .2 .7 BIT 3.0D 63 16 WW 2006 JUN 27 2138 11.88 36 3.93 120 11.38 16.97 48 .14 .2 .5 COA 3.2L 69 7 WW 2006 JUN 28 0010 44.92 38 46.49 122 43.39 2.31 31 .10 .2 .4 GEY 2.5D 26 1 WW 2006 JUN 28 0016 42.92 38 46.12 122 42.03 0.02 11 .47 1.7 2.7 GEY 2.3D 131 2 WW 2006 JUN 28 0726 48.63 38 48.37 122 47.50 1.21 21 .05 .2 .5 GEY 2.1D 38 0 WW 2006 JUN 28 2259 30.40 35 30.38 120 48.90 7.25 26 .05 .2 .8 SSM 2.3D 109 15 WW
