DISCLAIMER -- THIS IS NOT AN EARTHQUAKE PREDICTION OR WARNING!
  The commentary provided with these map(s) is for INFORMATIONAL
USE ONLY, and SHOULD NOT be construed as an earthquake prediction,
warning, or advisory.  Responsibility for such warnings rests with
the Office of Emergency Services of the State of California.
PLEASE REMEMBER -- THIS ARE PRELIMINARY DATA
  Releasing these summaries on a timely basis requires that the
data, analysis, and interpretations presented are PRELIMINARY. Of
necessity they can only reflect the views of the seismologists who
prepared them, and DO NOT carry the endorsement of the U.S.G.S.
Thus while every effort is made to ensure that the information is
accurate, nothing contained in this report is to be construed as
and earthquake prediction, warning, advisory, or official policy
statement of any kind, of the U.S. Geological Survey, or the
U.S. Government.
FOR QUESTIONS CONCERNING THIS REPORT
  Send e-mail to andy@pangea.stanford.edu


Seismicity Report for Northern California,
the Nation, and the World for the week of
   August 26 - September 1, 1993

Data and text prepared by
  Steve Walter, Barry Hirshorn, and Allan Lindh
U.S. Geological Survey
345 Middlefield Rd.  MS-977, Menlo Park, CA  94025
Graphics by Quentin Lindh

San Francisco Bay Area    
    
   For the 7-day period ending at midnight on Wednesday, September 1, 1993
the U.S. Geological Survey office in Menlo Park recorded 18 earthquakes of
magnitude one (M1) and greater within the San Francisco Bay area shown in
Figure 1. Four of these were as large as M2.0.  This total compares to 20
earthquakes during the previous week (August 19 - 25), three of which were
as large as M2.0.  
   The only notable Calaveras fault activity was a pair of M2 events that,
though they occurred four days apart, had nearly identical epicenters (#2
in figure 1). Both were located seven miles east of Morgan Hill at a
depth of about 8 km.  The only other event of note in the East Bay was a
M1.7 on the northern Hayward fault late Sunday afternoon (#4/1). No felt
reports were received for this earthquake, which was located along the
foothills of eastern El Cerrito.
   The creeping segment of the San Andreas was almost completely quiet
except for a M2.9 three miles northwest of San Juan Bautista on Monday
evening (#5/1).  Though no reports were received, it is likely that this
earthquake was felt locally.  To the north, along the Peninsula segment, 
a M1.2 occurred early last Thursday morning about 4 miles southeast of
Pacifica (#1/1).  Though the epicenter was less that a kilometer from
Interstate 280, which parallels the San Andreas along much of the
Peninsula, the earthquake was too small and too deep to have been felt
locally.    
   Two earthquakes occurred offshore of Santa Cruz during the week.  The
first was a M1.8 last Saturday evening that was located about 30 miles
southwest of Santa Cruz (#3/1).  This event may have occurred on the
northern end of the Sur-Nacimiento fault that crosses the outer reaches of
the Monterey Canyon.  On Tuesday afternoon, a M2.1 occurred on the San
Gregorio fault about 10 miles southwest of Santa Cruz (#6/1).  This is
nearly the same location as a M2.0 that occurred a week earlier.
        
Northern & Central California

  After an unusually quiet week from August 19-25, seismicity in the Cape
Mendocino area picked up again last week with nearly a dozen M2-3
earthquakes at the Cape and out along the fracture zone (#3,#5/2).  Half
had focal depths of over 20 km, indicating much of this activity occurred
within the underlying Gorda Plate.
  The northern Sierra Nevada were also a bit more active than usual with a
trio of M2 earthquakes.  The first occurred Sunday afternoon: a M2.0 that
was located southeast of Lassen Peak and about six miles west of Chester
(#4/2).  Then on Monday a M2.1 occurred about 15 miles northeast of Red
Bluff (#7/2), followed on Wednesday by a M2.5 about 13 miles northwest of
Portola (#8/2).  
  Activity continued down along the eastern side of the Sierra Nevada with
a M2.3 east of Lake Tahoe last Thursday, a M2.2 about 20 miles northwest
of Bridgeport on Saturday (#2/2), and a M2.0 late Sunday night in the
eastern Mono Basin (#6/2).
  Central California was fairly quiet with only a couple small M2's on the
creeping section of the San Andreas and a M2.1 on the Parkfield segment
(#1/2).
       
Long Valley Caldera
    
  Aftershocks continued in the Red Slate Mountain area, the location of a
M4.5 earthquake on August 10.  However, both the rate and magnitude of the
aftershocks declined during the week with only two M2.1 events in the
vicinity of the mainshock (#3/3).  Additional earthquakes occurred to the
north of the main aftershock zone, including a M2.7 near Laurel Mountain
(#2/3) and a M2.4 just south of the south rim of the caldera (#1/3). 
Activity within the caldera was reduced from last week with only a few
scattered earthquakes in the eastern end of the south moat area; all were
smaller than M2.

USA Seismicity (August 23 - September 1)
  
 According to the National Earthquake Information Center, there were
several small earthquakes in the lower 48 states, outside of California,
during the reporting period.  Wyoming led things off with a pair of M3.0
earthquakes.  The first occurred late on August 22 near the Continental
Divide just southeast of Grand Teton National Park (#1/4).  It was
followed the next morning by a second M3.0 about 25 miles northeast of
Rawlins (#2/4).  The New Madrid seismic zone in the central U.S. was
active, producing a M2.7 last Thursday evening that was felt in Jefferson,
St. Francois, and St. Louis counties (#4/4).  Finally, a M2.9 occurred
last Saturday in northwestern Oregon; it was felt in the Scotts Mills,
Woodburn, and Oregon City areas (#5/4).

The Planet Earth  (August 21 - September 1)

   The Java Trench, part of the boundary between the Indo-Australian and
Eurasian plates, was exceptionally active during the past week with a
number of moderate to strong earthquakes.   These included a small cluster
of earthquakes in the Andaman Islands area, a Mb5.8 in the Nicobar Islands
area (#4/5), and Mb5.9 and Ms6.3 earthquakes along the south side of the
Indonesian Island of Sumatra (#6/5).  The northern and eastern boundaries
of the Indo-Australian plate were also active with a M4.9 in Pakistan, a 
Mb5.0 in southern India, a Mb5.4 off the east coast of the North Island of
New Zealand (#2/5), and numerous M4-5 events from Papua-New Guinea to Fiji
and Samoa.   
   Other earthquakes of interest on the planet include a Mb5.4 on the
Chile Rise off the southern coast of Chile (#1/5), a Mb5.2 in the
Dodecanese Islands of southeastern Greece (#3/5), and a Mb5.8 in the
western part of the Caspian Sea (#5/5).

 Table 1. Northern & Central California Seismicity (M>1.0)

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 26  748 23.65 40 21.11 124 28.19 18.60 12 1 .04  .4  .3 MEN   1.9
93 AUG 26  808 20.45 40 19.36 124 29.50 26.74 18 1 .10 1.3  .7 MEN   2.0
93 AUG 26  816 26.82 39 32.41 122 58.07 11.09 23 2 .09  .3  .5 BAR   1.5
93 AUG 26  836 41.61 38 48.49 122 46.31  2.70 24   .11  .3  .5 GEY   1.8
93 AUG 26  904  6.52 36  1.30 119 51.99 24.59 15 1 .38 2.7 3.0 COA   2.4

93 AUG 26  904 48.00 38 48.58 122 46.35  2.37  9   .03  .3  .6 GEY   1.3
93 AUG 26  906 51.71 38 48.68 122 46.36  2.48  8   .02  .3  .6 GEY   1.2
93 AUG 26  913 22.89 37 37.84 118 51.01  4.26 11 1 .09  .4 1.0 SMO   1.1
93 AUG 26  955  0.83 39  5.01 119 41.99  2.21 36 3 .14  .8 2.3 WAK   2.5
93 AUG 26  957 17.70 37 32.39 118 53.02  6.92 20 2 .14  .4 1.2 MOR-  1.4

93 AUG 26 1149 10.19 37 39.14 118 52.45  8.53  9   .03  .8 1.4 DOM   1.0
93 AUG 26 1309 37.47 36 34.44 121  1.49  8.74 21 1 .17  .4  .9 PAN   1.0
93 AUG 26 1311 50.38 37 36.28 122 25.56  8.57 15 2 .11  .4  .7 SFP   1.2
93 AUG 26 1356 20.50 38 49.21 122 47.89  3.79 23   .06  .2  .5 GEY   1.9
93 AUG 26 1419 33.57 38 47.28 122 46.49  2.34 21   .06  .2  .5 GEY   1.6

93 AUG 26 1532 16.68 37 38.17 118 54.89  8.19 17 2 .08  .4  .6 SMO   1.7
93 AUG 26 1541 49.28 37 38.22 118 54.78  7.82 12 1 .07  .5  .6 SMO   1.2
93 AUG 26 1555 28.47 37 29.74 118 52.77  0.76  8   .05  .9 9.2 MOR--  .9
93 AUG 26 1602  9.78 40 18.21 124 30.05  6.17 15 1 .10  .7  .5 MEN-  1.7
93 AUG 26 1649 44.17 37 12.79 121 38.68  6.58 13   .05  .3  .8 SFL   1.1

93 AUG 26 1655  0.95 37 34.98 119  0.68  2.15  9 1 .05  .4 1.7 SIL   1.2
93 AUG 26 1703 56.99 37 31.57 118 52.57  0.96  7   .08 1.5 8.9 MOR - 1.0
93 AUG 26 1913 51.56 37 25.68 118 43.84  6.67 10   .03 2.5 2.0 WCS   1.4
93 AUG 26 1923 13.47 36 33.92 121  8.63  8.56 20 1 .08  .3  .8 PIN   1.3
93 AUG 26 1924 13.43 37 33.11 118 52.47  6.41  8   .04 1.2 1.6 MOR   1.1

93 AUG 26 1943 47.82 37 31.72 118 52.71  5.53 12   .06  .4 1.0 MOR-  1.1
93 AUG 26 1955 54.01 37 19.96 121 41.91  7.23 26 1 .08  .2  .6 SFL   1.2
93 AUG 26 2031 44.40 36  2.82 120 35.28  3.97  8   .07  .6 1.1 SLA   1.1
93 AUG 26 2055 50.09 37 32.04 118 53.17  5.04 27   .13  .3 1.2 MOR   2.1
93 AUG 26 2120 38.30 37 31.83 118 52.29  1.63  8   .05 1.1 9.2 MOR - 1.0

93 AUG 26 2326  4.91 37 33.64 121 25.26  1.87 18 1 .08  .4 1.3 JQN-  1.6
93 AUG 27   36  1.71 37 20.37 121 42.23  9.15  8   .10  .6 1.0 ALU   1.5
93 AUG 27  109 46.63 37 38.76 118 51.38  6.91 10   .12 1.1 1.3 SMO   1.0
93 AUG 27  119 11.52 38 51.92 122 46.92  1.88 12   .04  .3 1.0 GEY   1.5
93 AUG 27  414 10.61 37 17.59 118 22.38 13.38 12 1 .08  .4  .9 OWV   1.2

93 AUG 27  424 28.35 37 36.09 118 53.17  3.71 21   .10  .3  .5 SHE   1.6
93 AUG 27  441 28.75 35 37.75 118 16.46 12.80 14 3 .14  .5  .9 WWF   1.5
93 AUG 27  458 54.52 38 45.35 122 42.76  2.54 16   .05  .2  .5 GEY   1.7
93 AUG 27  512 56.08 37 37.99 118 52.14  7.27 12   .10  .5  .9 SMO   1.2
93 AUG 27  514  8.43 37 37.66 118 51.94  8.95 12   .10  .8  .9 SMO   1.1

93 AUG 27  525 50.52 37 38.46 118 51.85  7.59  7   .07  .8 1.7 SMO   1.0
93 AUG 27  527 25.34 37 37.89 118 51.99  9.19 13   .09  .6  .9 SMO   1.1
93 AUG 27  610  8.58 37 33.68 118 52.77  7.00 26   .12  .4  .8 MOR   2.1
93 AUG 27  630 38.94 37 29.59 118 51.16  5.36 31   .11  .3 1.0 MOR   1.5
93 AUG 27  631 56.34 38 45.57 122 42.65  1.61  7   .04  .4  .8 GEY   1.0

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 27  648 19.40 38 36.80 122 48.80  5.17 14   .16  .5 2.0 ROG   1.1
93 AUG 27  742  9.19 35 58.80 120 31.44 11.91 31   .09  .3  .4 MID   2.1
93 AUG 27  824 57.49 36  7.76 120  3.89  8.66 15   .13  .7  .4 COA   1.9
93 AUG 27  831 22.82 37 31.62 118 52.68  4.51 14   .05  .6 2.4 MOR   1.5
93 AUG 27  853 27.26 36  8.70 119 59.64  6.49 12   .40 1.9 2.4 COA * 1.6

93 AUG 27  941 49.80 40 40.94 125  5.19 23.56 14 1 .18 3.315.2 DEL - 2.0
93 AUG 27 1000 55.62 37 36.17 118 53.34  3.67 37 3 .12  .3  .4 SHE   2.7
93 AUG 27 1040  6.46 37 36.86 118 49.27  5.74 29   .13  .4  .6 HCF   1.9

93 AUG 27 1254 33.89 37 31.87 118 52.73  4.63 17   .15  .5 1.5 MOR   1.7
93 AUG 27 1339 33.17 37  7.74 121 31.65  8.51 70   .07  .2  .4 CYN   2.5
93 AUG 27 1454  3.11 35 48.00 120 20.55  3.57 18   .09  .3  .9 GOL   1.6
93 AUG 27 1638 36.28 37 30.37 118 52.81  4.27 17   .10  .4 1.7 MOR-  1.4
93 AUG 27 1646 29.89 38 49.21 122 46.45  2.19  8   .09  .3  .7 GEY   1.1

93 AUG 27 1649  3.27 37 31.77 118 53.01  4.76 11   .05  .4 1.0 MOR   1.1
93 AUG 27 1906 19.67 37 37.31 118 57.78  7.86 16   .07  .4  .6 SMO   1.6
93 AUG 27 1916 34.62 37 34.29 118 53.11  6.14 38 2 .10  .3  .5 MOR   2.9
93 AUG 27 1926 58.01 37 35.93 118 53.30  3.79 18   .10  .4  .6 MOR   1.8
93 AUG 27 2008 42.32 38 47.60 122 46.49  4.82 12   .04  .3  .7 GEY   1.4

93 AUG 27 2117 51.05 38  3.74 120 24.68  2.02  9 2 .10  .4 9.1 YOS - 1.0
93 AUG 27 2339 12.12 37 34.29 118 53.08  6.48 21   .12  .4  .7 MOR   1.6
93 AUG 28   23 30.48 36  3.18 120 36.02  2.04  8   .09 1.2 1.3 SLA   1.3
93 AUG 28  143 35.47 37 30.62 118 52.70  0.54 14   .08  .9 6.7 MOR   1.6
93 AUG 28  218  6.73 37 30.72 118 53.02  0.65 23   .13  .4 8.9 MOR * 2.1

93 AUG 28  222 39.41 37 30.66 118 53.08  0.84 22   .13  .4 8.1 MOR * 2.1
93 AUG 28  229 21.31 37 30.54 118 52.87  0.01 13   .04  .5 7.8 MOR - 1.6
93 AUG 28  251 49.38 37 30.75 118 52.62  1.82 14   .11  .9 6.6 MOR * 1.7
93 AUG 28  328  3.27 36 58.86 121 13.62  0.00  9   .18  .6 8.6 ORT * 1.1
93 AUG 28  557  3.82 37 16.80 121 38.96  9.48 33 1 .05  .2  .4 SFL   1.3

93 AUG 28  630 35.22 37 34.44 119  0.43  2.01  8   .06 1.1 1.1 SIL   1.3
93 AUG 28  643 48.03 40 23.05 123 33.89 26.80 17 2 .12  .4 1.0 MEN   1.9
93 AUG 28  654 35.51 40  8.61 123 50.97 20.98 23 1 .16  .5  .3 MEN   2.1
93 AUG 28  655  8.57 37 34.05 119  0.73  1.85 23   .13  .4 1.8 SIL   2.2
93 AUG 28  754  6.09 38 49.53 122 46.78  2.67 18   .07  .2  .7 GEY   1.8

93 AUG 28  855 19.01 36  2.56 121 32.79  8.24  8   .03 1.1 7.0 SUR - 1.9
93 AUG 28  918  1.62 36  0.39 120  8.18 14.92 25   .13  .5  .9 COA   1.8
93 AUG 28  941 41.73 38 23.63 119 33.25 14.21 20 2 .23 1.1 6.1 WAK   2.5
93 AUG 28  954 46.42 40 21.73 123 56.46  6.19 20 1 .14  .4  .7 MEN-  1.5
93 AUG 28 1038 30.46 37 30.07 118 52.46  4.43 28 2 .14  .4 1.3 MOR   1.7

93 AUG 28 1100  4.74 37 28.35 119  2.08  1.75  9   .05  .5 9.1 SIL - 1.1
93 AUG 28 1213 43.01 37 39.01 118 53.36  2.27  7   .04  .4  .4 DOM   1.2
93 AUG 28 1222 40.46 38 47.21 122 46.39  2.48 17   .08  .2  .6 GEY   1.8
93 AUG 28 1328 56.11 37 38.57 118 56.43  5.14 13   .05  .4  .7 SMO   1.3
93 AUG 28 1351 44.84 38 49.27 122 48.05  3.73  8   .03  .4  .8 GEY   1.1

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 28 1526 31.03 40 23.48 125 25.44 24.57 28 1 .26 3.019.9 MEN-  3.0
93 AUG 28 1533 59.76 36 27.38 120  9.66 19.18 21   .14  .5  .3 JQN   2.2
93 AUG 28 1711 15.48 38 44.65 122 26.04  5.16 34 1 .25  .3 1.3 GVL   2.0
93 AUG 28 1729 51.45 39 37.18 123 25.94  9.60  8 1 .06  .4  .8 MAA-  1.0
93 AUG 28 1816  6.11 37  2.44 121 28.87  6.32 72 1 .09  .2  .4 CYS   1.7

93 AUG 28 1826 52.68 40 32.92 123 32.53 10.73 12 1 .19  .6  .4 EUR   1.4
93 AUG 28 1940 16.35 37 30.30 118 52.34  2.06  9   .06 1.4 9.0 MOR - 1.0
93 AUG 28 2259 53.84 36 39.03 121 14.09  8.04 23   .05  .2  .6 STN   1.1
93 AUG 29  249 44.20 40 23.07 125 28.47 24.24 26 1 .23 2.717.8 MEN - 3.0
93 AUG 29  349 17.85 36 47.91 122 31.43 22.68 17 3 .22 1.8 1.0 POS   1.8

93 AUG 29  541 45.31 38 47.27 122 43.61  1.88 18   .07  .3  .6 GEY   1.6
93 AUG 29  547 55.61 37 31.92 118 52.04  1.91  8   .13 1.513.2 MOR - 1.1
93 AUG 29  636 50.44 40 18.06 124 22.64  7.87 10 1 .08  .9  .5 MEN   1.5
93 AUG 29  714 26.54 37 39.11 118 51.41  4.04 18   .14  .4  .9 DOM   1.8
93 AUG 29  737 44.82 37 32.85 118 52.42  0.04  9   .09 1.0  .6 MOR * 1.0

93 AUG 29  741  6.29 38 47.81 122 45.89  1.25  7   .06  .3 1.0 GEY   1.0
93 AUG 29  751 57.29 38 49.08 122 48.59  3.77  9   .05  .4  .8 GEY   1.3
93 AUG 29  819 11.31 35 53.14 120 25.64 11.16 26 2 .08  .3  .5 GOL   1.4
93 AUG 29  822  3.55 38 50.01 122 47.69  1.98  8   .02  .3  .7 GEY   1.2
93 AUG 29  854 15.59 38 45.81 122 43.86  1.54 13   .07  .3  .6 GEY   1.6

93 AUG 29  859 45.27 38 50.27 122 49.99  0.86 12   .09  .3 1.1 GEY   1.4
93 AUG 29  907 38.10 36 59.16 121 38.62  3.96 39   .15  .3  .6 SAR   1.4
93 AUG 29  919 52.10 39 18.40 123 12.27  0.07 30 3 .10  .2 1.2 MAA-  1.8
93 AUG 29 1039 33.78 40 18.32 124 43.38 13.55 12 1 .21 2.5 1.2 MEN   2.2
93 AUG 29 1222 56.12 37  3.80 121 55.04 16.53 27 3 .07  .4  .7 LOM   1.2

93 AUG 29 1300 23.03 38 47.79 122 46.02  1.48  9   .06  .3  .6 GEY   1.6
93 AUG 29 1300 29.65 38 47.04 122 46.60  1.75  9   .07  .3 9.7 GEY - 1.5
93 AUG 29 1302 41.51 37 31.61 118 52.77  1.42 13   .12  .511.8 MOR - 1.5
93 AUG 29 1330 36.24 37 39.27 118 52.98  4.00 14   .15  .6  .9 DOM   1.4
93 AUG 29 1350 54.57 40 20.62 121 19.05  6.37 14 3 .07  .4 1.2 ALM   1.4

93 AUG 29 1419 39.24 38 50.41 122 48.54  0.24  8   .10  .6 1.8 GEY * 1.1
93 AUG 29 1606  5.23 37 30.58 118 49.13  0.58  8   .03  .9  .7 MOR   1.3
93 AUG 29 1606 50.74 37 35.64 118 49.64  3.42 12   .17  .6  .9 MOR   1.2
93 AUG 29 1759 10.75 37 39.30 118 54.25  4.37 10   .02  .4  .7 DOM   1.2
93 AUG 29 1803 37.63 37 31.31 118 52.07  1.61 12   .13 1.111.0 MOR - 1.4

93 AUG 29 1811 55.89 37 40.57 118 50.43  1.16  7   .04  .4  .5 DOM   1.2
93 AUG 29 1956 53.10 39 14.64 123 17.08  6.99 19 3 .06  .2  .7 MAA   1.7
93 AUG 29 2144 55.00 38 47.95 122 45.10  1.92 16   .08  .3  .6 GEY   2.1
93 AUG 29 2213 16.46 40 19.32 121 20.19  4.10 22 2 .09  .3  .9 ALM   2.1
93 AUG 29 2248 41.77 38 45.09 122 42.63  1.37 10   .18  .6 1.3 NAP   1.5

93 AUG 29 2309 57.40 37 55.36 122 17.31 11.28 45 4 .19  .3  .6 HAY   1.7
93 AUG 29 2321  5.61 40 32.79 123 32.35 10.65 14 1 .23  .7  .5 EUR   1.7
93 AUG 30   37 26.86 38 49.45 122 47.93  4.12  9   .05  .3  .9 GEY   1.2
93 AUG 30  105 31.61 38 48.59 122 46.92  0.64 13   .12  .3  .6 GEY   1.6
93 AUG 30  636 30.82 40 24.75 124 43.76 17.35 11 1 .10 1.6  .8 MEN   2.8

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 30  636 50.25 40 24.57 124 44.51 17.42 13 1 .14 1.4  .6 MEN   2.8
93 AUG 30  704 51.46 38 50.41 122 49.34  2.72 12   .05  .3 1.1 GEY   1.4
93 AUG 30  715 50.06 38  1.55 118 47.57  9.66 31 4 .11  .9 2.6 MOL   2.2
93 AUG 30  734 31.68 36 33.05 121  8.45  5.33 43   .13  .3 1.0 PIN   2.1
93 AUG 30  813 57.11 36 41.13 121 18.76  4.01 19   .06  .2  .5 STN   1.9

93 AUG 30  836 56.81 39 23.18 122 14.04 24.15 27 2 .20  .5 1.1 SAC   2.1
93 AUG 30  937 53.46 37 35.92 118 53.22  3.25  7   .02  .7  .8 MOR   1.0
93 AUG 30  938 56.88 37 30.67 118 52.40  1.74 11   .13  .913.1 MOR - 1.1
93 AUG 30  951 54.53 37 39.58 118 50.39  1.20 16   .12  .3  .5 HCF   1.8
93 AUG 30  954 24.22 37 30.09 118 52.12  2.04 12   .13 1.312.4 MOR - 1.3

93 AUG 30 1240 49.31 37 39.20 118 50.61  1.82 15   .09  .3  .9 HCF   1.6
93 AUG 30 1241 36.21 38 47.25 122 46.49  2.18  7   .01  .3  .7 GEY   1.2
93 AUG 30 1302 40.57 37 37.71 118 51.76  7.48 13   .10  .6  .8 SMO   1.3
93 AUG 30 1344  9.31 38 49.15 122 47.80  3.73  8   .05  .3  .8 GEY   1.2
93 AUG 30 1351 28.78 37 37.66 118 51.74  7.35 16   .09  .5  .7 SMO   1.6

93 AUG 30 1414 32.60 37 37.65 118 51.83  6.74 14   .11  .5  .9 SMO   1.5
93 AUG 30 1442 31.82 37 38.52 118 52.23  6.62  9   .04  .7  .5 SMO   1.0
93 AUG 30 1623 31.58 37 37.59 118 51.75  7.66 10   .12  .7 1.0 SMO   1.0
93 AUG 30 1703 11.97 37 30.86 118 50.29  0.03 10   .14 1.3 1.4 MOR * 1.6
93 AUG 30 1803 13.57 38 48.99 122 48.55  3.87  8   .02  .3  .6 GEY   1.3

93 AUG 30 1926 50.07 37  2.41 121 28.74  6.45 43 1 .06  .2  .4 CYS   1.8
93 AUG 30 1956 41.79 37 32.30 118 52.26  1.90  8   .04 1.6 8.3 MOR - 1.1
93 AUG 30 2053  9.93 40 18.17 122  0.69 14.32 26   .17  .4 1.5 SHA   2.3
93 AUG 30 2308 40.54 41 18.62 123 30.94 37.44 12 1 .13  .7 1.1 KLA   2.2
93 AUG 30 2343  4.79 36 11.63 120 45.22  3.34  8   .04  .3 1.1 BIT   1.4

93 AUG 30 2354  2.73 36 28.66 121  2.71  2.73 21   .08  .3  .9 BIT   2.0
93 AUG 31    8 21.34 40 17.99 124 28.59 16.96 19 1 .09  .9  .2 MEN   2.8
93 AUG 31  122 38.32 36 51.63 121 35.81  6.79 75   .19  .3  .4 SJB   2.9
93 AUG 31  155 14.41 37 37.09 118 53.89  2.13  8   .07  .7  .4 SHE   1.5
93 AUG 31  427 20.42 35 35.19 119 53.32 17.16 27 2 .21 1.2  .7 BAK   2.3

93 AUG 31  441  2.62 37 39.01 118 50.10  5.62 10   .06  .4  .9 HCF   1.1
93 AUG 31  514 52.88 38 47.53 122 46.10  2.42  7   .03 1.4 3.9 GEY   1.1
93 AUG 31  614  2.63 40 24.58 124 24.29 20.79 23 1 .12  .8  .2 MEN   3.1
93 AUG 31  751 59.13 38 49.32 122 47.62  0.04 15   .13  .3  .9 GEY * 1.7
93 AUG 31  854  9.08 37 31.93 118 53.12  1.20 15   .10  .4 8.6 MOR - 1.6

93 AUG 31  909 55.41 40 21.45 124 28.48 17.31 11 1 .07  .5  .6 MEN   1.8
93 AUG 31 1023 27.66 36  2.77 120 34.79  4.43  7   .05  .8  .9 SLA   1.2
93 AUG 31 1105 52.96 41 17.16 122  5.63  6.93  8   .09  .5 2.1 SHA   1.0
93 AUG 31 1117 31.55 40 44.14 123 53.22  9.78 10 1 .15  .6  .6 EUR   1.2
93 AUG 31 1217 19.33 38 49.87 122 49.66  0.67  8   .10  .5 1.0 GEY   1.0

93 AUG 31 1729  9.88 41 19.65 122  7.60 12.38  9 1 .13  .8  .9 SHA   1.4
93 AUG 31 1757 56.06 38 47.31 122 45.00  0.79  8   .04  .3 1.0 GEY   1.3
93 AUG 31 1758 19.69 38 47.19 122 44.95  0.09  7   .08  .3 1.4 GEY   1.1
93 AUG 31 1820  8.41 38 47.13 122 46.27  3.05  8   .02  .3  .9 GEY   1.1
93 AUG 31 2239 15.23 36 55.74 122 11.97  2.19 43   .19  .7 2.1 MON   2.1

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 31 2258 15.60 37 34.45 118 52.32  4.36  8   .13 1.3 2.6 MOR   1.7
93 AUG 31 2326 50.88 38 50.35 122 47.95  0.74 16   .07  .2  .8 GEY   1.9
93 AUG 31 2330  3.36 38 50.28 122 47.79  0.47 16   .16  .3 1.3 GEY   1.8
93 AUG 31 2334 32.43 37  7.81 121 31.80  7.72 91   .12  .2  .4 CYN   2.7
93 SEP  1   33 26.34 38 47.80 122 47.78  0.95  9   .10  .3  .7 GEY   1.1

93 SEP  1  230 36.50 37 31.80 118 53.18  0.85  9   .03  .7 7.8 MOR - 1.1
93 SEP  1  239 24.48 37 40.57 118 50.47  1.93 10   .07  .3  .5 DOM   1.1
93 SEP  1  244 51.19 37 40.50 118 50.49  2.09 10   .04  .3  .6 DOM   1.2
93 SEP  1  514  0.25 37 38.76 118 51.75  7.61 13   .07  .6  .7 SMO   1.4
93 SEP  1  712  5.59 40 18.66 124 44.61 14.36 13   .15 4.9 2.2 MEN   2.6

93 SEP  1  854  0.58 38 46.77 122 43.29  3.12  7   .03  .9 1.1 GEY   1.1
93 SEP  1 1032  6.97 37 32.07 118 53.00  2.17 13   .13  .910.8 MOR - 1.5
93 SEP  1 1135 33.97 37 31.41 118 52.29  1.52 15   .13 1.112.1 MOR - 1.4
93 SEP  1 1223 29.82 37 38.22 118 51.64  7.94 14   .09  .4  .7 SMO   1.5
93 SEP  1 1327 30.69 37 31.69 118 52.39  1.11 12   .12  .912.3 MOR - 1.5

93 SEP  1 1448 23.18 38 48.96 122 48.81  4.83 10   .11  .5 1.1 GEY   1.4
93 SEP  1 1529 49.28 41 11.60 121 53.71 18.25  7   .10 1.2 3.9 SHA   1.6
93 SEP  1 1716  1.11 36 36.05 121 11.91  3.08 15   .08  .3 1.2 PIN   1.9
93 SEP  1 1756 31.26 37 33.30 119  0.51  0.00  9   .13 1.6 2.6 SIL * 1.2
93 SEP  1 1818 29.81 40 17.56 124 21.03  8.67 21   .14  .6  .3 MEN   3.4

93 SEP  1 1900 25.90 37 32.93 118 53.94  1.00  8   .10 2.0 2.8 SIL   1.0
93 SEP  1 1940 59.20 39 52.71 120 41.18  5.49 15   .15 1.311.6 WAK - 2.5
93 SEP  1 2233 18.82 37 31.22 118 52.67  1.05 17   .15  .612.4 MOR - 1.7
93 SEP  2  135 34.10 38 51.05 122 49.76  1.12  8   .07  .4 1.0 GEY   1.1

     
 TABLE 2.
Data from National Earthquake Information Center (NEIC)

UTC TIME    LAT     LONG    DEP GS MAGS  SD STA  REGION AND COMMENTS
HRMNSEC                         MB  Msz     USED
-------------------------------------------------------------------------------
AUG 21
044944.1  29.819N 137.425E 513* 4.5     0.9  44 SOUTH OF HONSHU, JAPAN
080751.4* 46.282S  96.425E  10G 4.6     1.2  13 SOUTHEAST INDIAN RIDGE
085143.3   6.518N 126.941E  66? 4.7     1.1  35 MINDANAO, PHILIPPINE ISLANDS

AUG 22
112947.2% 44.027N   7.126E  10G         0.3  10 NORTHERN ITALY. ML 2.3 (GEN).
144619.5% 10.664N  62.529W  92?         0.2  13 NEAR COAST OF VENEZUELA. MD 4.3
163102.9& 60.390N 152.100W  79               61 SOUTHERN ALASKA. <AEIC>.
194646.4*  0.579S 123.329E  33N 4.8     1.5  10 MINAHASSA PENINSULA, SULAWESI
234653.7* 36.929N  22.138E  33N         1.0  14 SOUTHERN GREECE

AUG 23
051932.0* 17.698S 178.346W 600G 4.7     0.7  18 FIJI ISLANDS REGION
052144.3  29.955N  67.888E  33N 4.9     0.8  41 PAKISTAN
052950.3  43.383N 110.097W   5G         0.7  11 WYOMING. ML 3.0 (GS).
090316.7  25.296N 128.082E  33N 5.1 4.6 1.0  41 RYUKYU ISLANDS
100137.6? 14.15 S 167.33 E 150G 4.9     1.7  20 VANUATU ISLANDS
120545.7* 22.682N  99.276W  33N 4.1     0.9  24 CENTRAL MEXICO
120739.4  36.392N 142.079E  29  4.8 4.8 0.9  57 OFF EAST COAST OF HONSHU, JAPAN
131213.5  42.052N 106.903W   5G         1.1  14 WYOMING. ML 3.0 (GS).
133056.1* 12.856N 144.041E  33N 4.3     1.3   8 SOUTH OF MARIANA ISLANDS
152029.6  34.178N 117.010W  10G         0.5   8 SOUTHERN CALIFORNIA. MD 2.9
190535.4* 10.660N  94.526E  33N 4.2     0.6   6 ANDAMAN ISLANDS, INDIA
195107.4* 29.402N  67.835E  33N 4.7     1.2  27 PAKISTAN
201040.4* 10.590N  94.287E  33N 4.3 4.6 1.1  10 ANDAMAN ISLANDS, INDIA
210259.7  15.512S 172.906W  33N 5.1 5.0 0.8  64 SAMOA ISLANDS REGION
214031.6* 13.253N 146.003E  33N 4.6     0.8  16 SOUTH OF MARIANA ISLANDS

AUG 24
004617.3  11.921N  86.594W 174D 5.0     0.9  77 NEAR COAST OF NICARAGUA
034410.6& 62.940N 150.760W 107               77 CENTRAL ALASKA. <AEIC>.
035647.8* 10.573N  94.288E  33N 4.5     1.6   7 ANDAMAN ISLANDS, INDIA
050517.7  50.998N 129.537W  10G 3.9     0.8  24 VANCOUVER ISLAND REGION
174731.8* 20.737N  71.494E  33N 5.0     1.4  26 SOUTHERN INDIA. Felt in the
        states of Gujarat and Maharastra.
191841.9  19.611N 145.546E 114* 4.9     1.0  42 MARIANA ISLANDS
225223.3* 10.374N  94.091E  33N 4.7 4.3 1.3  17 ANDAMAN ISLANDS, INDIA
231842.1* 10.581N  94.114E  33N 4.3     1.6  13 ANDAMAN ISLANDS, INDIA
233557.2* 10.445N  93.780E  33N 4.5 4.1 1.3  17 ANDAMAN ISLANDS, INDIA

AUG 25
012741.2* 22.782S  66.367W 250G 4.5     0.8  28 JUJUY PROVINCE, ARGENTINA
022352.5* 43.101N 139.181E  33N 4.5     1.1  30 EASTERN SEA OF JAPAN
024627.7& 61.440N 146.590W  19               78 SOUTHERN ALASKA. <AEIC>. ML 3.1
052531.9* 44.875S  79.944W  10G 5.4 5.4 1.0  54 OFF COAST OF SOUTHERN CHILE.
060736.9& 63.050N 150.780W 120               94 CENTRAL ALASKA. <AEIC>.
064747.9?  6.32 S 147.15 E 111? 5.3     0.8  13 EASTERN NEW GUINEA REG., P.N.G.
072251.0? 10.59 N  94.24 E  33N 4.1     1.6   6 ANDAMAN ISLANDS, INDIA
085002.4& 67.500N 146.010W  17               65 NORTHERN ALASKA. <AEIC>. ML 4.3
093951.5* 28.012S  66.578W 155* 4.5     1.1  31 CATAMARCA PROVINCE, ARGENTINA
155653.4   8.438N 138.296E  33N 5.2 4.8 1.1  57 WESTERN CAROLINE ISLANDS
163535.8*  3.678S 128.137E 121* 5.1     1.2  11 SERAM, INDONESIA

AUG 26
013000.1* 35.934S 178.331E  33N 5.4 5.4 0.7  21 OFF E. COAST OF N. ISLAND, N.Z.
014309.8   8.735S 110.250E  60G 5.2     1.5  19 JAWA, INDONESIA
033242.7   5.432S 154.201E 135D 5.4     1.0  79 SOLOMON ISLANDS
100357.1  36.682N  28.092E  33N 5.2     1.1 115 DODECANESE ISLANDS. ML 4.9
        (THE). Felt on Rhodos and Kos, Greece.
114616.1  59.954N 141.259W  10G 4.7     0.8  28 SOUTHEASTERN ALASKA. Felt (V) at
                                                Cape Yakataga and Icy Bay.
115217.4  59.976N 141.195W  10G 4.6     0.9  30 SOUTHEASTERN ALASKA. Felt at Icy
                                                Bay.
115943.9* 17.511N 100.729W  29D 4.6     0.9  39 GUERRERO, MEXICO
233642.0& 62.350N 151.160W  82               55 CENTRAL ALASKA. <AEIC>.
235049.6& 63.260N 151.120W   6               75 CENTRAL ALASKA. <AEIC>. ML 3.4

AUG 27
000832.8? 37.77 N  90.52 W   5G         1.2   4 EASTERN MISSOURI. mbLg 3.3 (GS).
        MD 3.3 (SLM). Felt in Jefferson, St. Francois and parts of St. Louis
        Counties, Missouri.
011557.8  59.928N 140.991W  10G         0.7  70 SOUTHEASTERN ALASKA. ML 3.8
014523.6* 17.605N 100.707W  33N 4.7     0.9  44 GUERRERO, MEXICO
051115.8  59.964N 141.023W  10G         0.9  71 SOUTHEASTERN ALASKA. ML 3.7
064044.1* 12.972N 145.737E  33N 4.2     0.7   6 SOUTH OF MARIANA ISLANDS

AUG 28
005858.8* 67.751N 163.516W  33N 3.9     1.1  18 NORTHERN ALASKA
025351.9* 18.648N 146.222E  33N 4.7     0.6  21 MARIANA ISLANDS
135142.7   7.025N 126.856E  33N 5.0     0.8  44 MINDANAO, PHILIPPINE ISLANDS
201444.6   6.492N  94.739E 122D 5.8     0.9 120 NICOBAR ISLANDS, INDIA. Mw 5.9
212540.4& 45.049N 122.632W  16               37 WASHINGTON-OREGON BORDER REGION.
        <SEA-P>. MD 2.9 (GS). Felt in the Scotts Mills-Woodburn-Oregon City
        area, Oregon.

AUG 29
043513.0  61.716N 147.923W  10G         1.1  12 SOUTHERN ALASKA. ML 3.2 (PMR).
                                                Felt (II) at Palmer.
084040.4  18.211N 100.515W  70G 4.7     0.8  55 GUERRERO, MEXICO
095755.7*  6.934S 129.846E 150G 5.6     1.3  20 BANDA SEA

AUG 30
195928.8  17.590S 178.400W 600G 5.0     0.8  59 FIJI ISLANDS REGION

AUG 31
065526  Q 41.9  N  49.7  E  33N 5.8     0.5  48 CASPIAN SEA

SEP 01
004122  Q 31.8  N 141.8  E  33N     5.7 0.9  75 SOUTH OF HONSHU, JAPAN
114842  Q  4.2  S 102.7  E 100  5.9     0.7  86 SOUTHERN SUMATERA, INDONESIA
140319  Q  3.1  N  96.3  E  33N     6.3 1.1  92 NORTHERN SUMATERA, INDONESIA


Notes: Origin time in the list is in GMT, in the text and on maps
       it is in local time.
       N RD: is the number of readings used to locate the event.
       N S: is the number of S waves in N RD.
       RMS SEC: is the root mean squared residual misfit for the
                location is seconds, the lower the better, over 0.3
                to 0.5 seconds is getting bad, but this is machine,
                not hand timed, data.
       ERH: is the estimated horizontal error in kilometers.
       ERZ: is the estimated vertical error in kilometers.
       N FM: is the number of readings used to compute the magnitude.
       REMKS: obtuse region codes that denote the velocity model
              used to locate the event.
       DUR MAG: is the magnitude as determined from the duration of
                the seismograms, not the amplitude.  Sort of like
                going to echo canyon and measuring how loud your
                yell is by counting echos.
       FIG: denotes the figure/event number in the maps posted separately.