Northern California Seismicity Report for the week ending
Aug 30, 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
- 17 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 3.9, 2 miles S of San Juan Bautista, CA at 05:03 AM UTC Sunday, 08 26, 2001 (10:03 PM PDT Saturday, Aug 25, 2001).
- 25 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 3.9, 2 miles S of San Juan Bautista, CA at 05:03 AM UTC Sunday, 08 26, 2001 (10:03 PM PDT Saturday, Aug 25, 2001).
- 9 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 1.5, 8 miles WNW of Toms Place, CA at 09:46 PM UTC Tuesday, 08 28, 2001 (02:46 PM PDT Tuesday, Aug 28, 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 AUG 23 1140 53.54 41 4.26 123 40.30 37.93 9 .04 1.1 1.4 EUR 2.1D 204 22 NN
2001 AUG 24 0021 18.73 36 59.09 121 38.23 3.58 68 .10 .1 .3 SAR 2.3D 39 6 NN
2001 AUG 25 0810 29.96 37 23.67 118 33.40 11.47 28 .06 .4 1.1 RVL 2.2D 120 12 NN
2001 AUG 25 1321 14.35 38 3.75 121 49.14 20.66 85 .29 .5 .3 JQN 2.5D 91 10 NN
2001 AUG 25 1511 28.29 37 11.43 118 28.38 17.55 20 .04 .7 .8 KAI 2.1D 226 12 WW
2001 AUG 26 0432 32.86 36 48.09 121 31.23 6.84 63 .11 .2 .3 SJB 3.5L 34 3 NN
2001 AUG 26 0446 0.44 36 48.44 121 31.50 6.23 62 .10 .1 .2 SJB 3.3L 34 3 NN
2001 AUG 26 0503 2.42 36 48.65 121 32.00 6.58 64 .11 .2 .3 SJB 3.9L 34 3 NN
2001 AUG 26 0626 37.22 36 48.95 121 32.33 6.53 60 .10 .2 .3 SJB 3.2L 34 4 NN
2001 AUG 26 1434 18.13 38 48.68 122 48.35 0.64 37 .14 .2 .3 GEY 2.4D 34 1 NN
2001 AUG 26 2247 20.05 37 33.44 121 40.13 4.61 59 .08 .1 .3 HAM 2.5D 54 1 NN
2001 AUG 27 0635 50.37 40 23.59 124 22.64 27.77 16 .07 1.1 1.1 MEN 2.0D 220 10 NN
2001 AUG 28 0210 36.86 36 48.84 121 31.82 5.86 56 .09 .1 .2 SJB 2.1D 34 3 NN
2001 AUG 28 1217 55.47 36 41.67 121 19.45 4.15 63 .07 .1 .3 STN 2.7D 45 2 NN
2001 AUG 28 1651 26.58 36 50.03 121 33.60 6.25 61 .11 .2 .3 SJB 2.8D 33 2 WW
2001 AUG 29 1611 57.91 38 8.51 121 50.00 15.77 13 .26 .9 1.5 JQN 2.0D 92 3 WW
2001 AUG 29 2149 48.95 36 45.83 121 28.29 7.37 62 .13 .2 .4 SJB 3.0L 35 2 WW
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