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 -- THESE 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 michael@andreas.wr.usgs.gov
  DO NOT SEND EMAIL TO weekly@garlock.wr.usgs.gov  It will not be read.

Seismicity Report for Northern California,
the Nation, and the World for the week of
May 15 - 21, 1997

 Stephen R. Walter
U.S. Geological Survey
345 Middlefield Rd.  MS-977, Menlo Park, CA  94025

San Francisco Bay Area        
           
   During the seven day period ending at midnight on Wednesday, May 21,
1997 the U.S. Geological Survey office in Menlo Park recorded 27
earthquakes of magnitude one (M1) and greater within the San Francisco Bay
area shown in Figure 1. Eight were as large as M2. This total compares to
16 earthquakes during the prior seven day period (May 8 - 14), only two of
which were as large as M2.
  All M2 earthquakes occurred in the southern part of the Bay Area,
primarily along the creeping segments of the San Andreas and Calaveras
faults.  San Andreas activity consisted of a pair of M2's last Thursday
morning just west of San Juan Bautista (#1/1) and a M2.6 Tuesday afternoon
about five miles northwest of the town (#3/1).  The Calaveras saw a trio
of M2's about nine miles southeast of Hollister (#2/1) and a M2.1
Wednesday night about two miles south of the town (#4/1).  
   The only other notable earthquake was a 21-km-deep M2.5 that occurred
in the southern Santa Cruz Mountains about four miles west of Felton
(#5/1).  It was reported felt in the Bonny Doon area.
   
Northern & Central California
	
   It was a relatively quiet week with no earthquakes as large as M3.  
Activity continued in the area northeast of Red Bluff with M2.3 last
Thursday evening about 11 miles northeast of Red Bluff (#2/2) and a M2.9
and a M2.6 Sunday morning both about 20 miles east-northeast of Red Bluff
(#6/2).  Activity in the Cape Mendocino area included a 24-km-deep events
beneath the Klamath Mountains about 26 miles west of Hayfork (#5/2) and a
M2.2 on the Mendocino fracture zone about 42 miles west of Petrolia
(#8/2).  Aside from a few small events at the Geysers, there were no
earthquakes as large as M2 in the Coast Ranges south of the Cape.
   Activity in central California included two M2 events on the creeping
segment of the San Andreas, the first a M2.8 about seven miles northwest
of Parkfield (#7/2), the second a M2.4 about four miles north of the
Pinnacles (#9/2).  The Coalinga area experienced three M2 earthquakes, the
largest a M2.3 Wednesday evening about eight miles northwest of the town
(#4/2).  
   Other events of note include a pair of small M2's in the central Sierra
Nevada, 27 and 39 miles respectively southeast of Yosemite Village (#1/2),
and a pair of M2's east of Mono Lake (#3/2). 

Long Valley Caldera

   The only M2 earthquake in the vicinity of the caldera was a M2.1 just
before noon on Tuesday that occurred beneath the southern rim of the
caldera about five miles southeast of Mammoth Lakes (#3/3).  Activity
south of the caldera included four M2 events near the central part of the
Hilton Creek fault (#1/3), a M2.5 just a bit farther to the southwest
(#2/3), and a M2.0 east of the Round Valley fault about 13 miles west of
Bishop (#4/3)  

USA Seismicity (May 12 - 21)
  
   According to data provided by the National Earthquake Information
Center there were only two notable earthquakes in the lower 48 states
outside of California.   Last Thursday evening a M4.4 occurred in a remote
part of northeastern Nevada about 50 miles southeast of Elko (#1/4).  On
Monday afternoon a M2.9 occurred in northeastern Georgia, near the Alabama
and Tennessee borders (#3/4).  Activity on note in southern California
included a M3.0 that was felt near the Los Angeles INternational Airport.

The Planet Earth  (May 12 - 21)

   Only one large earthquake occurred on the planet during the week.  This
M6.1 quake occurred in central India near the city of Jabalpur (#3/5). 
Early reports claimed at least 35 people were killed and hundreds more
were injured.  
   A M5.3 in Albania damaged some houses in the Lake Ohrid area and was
felt as far away as Edhessa and Kastoria, Greece (#1/5).  A M5.6 in
northern Chile was strongly felt at Copiapo and less strongly at El
Salvador, Inca de Oro and Petrerillos (#2/5).  
   
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

97 MAY 15  842 36.64 37 22.10 119 28.41  6.47 10 1 .17 1.013.6 KAI - 2.0
97 MAY 15 1033 54.86 37 32.77 118 49.76  6.37  9   .01 3.1 3.2 MOR   1.2
97 MAY 15 1105 33.86 38 46.88 122 44.93  3.90  7   .02  .3 1.2 GEY   1.2
97 MAY 15 1130 45.91 39 33.69 123 22.11  7.94 10   .07  .3 1.3 MAA   1.2
97 MAY 15 1558  3.07 37 27.07 121 32.61  5.84  7   .01  .7 1.7 HAM   1.0

97 MAY 15 1618 46.95 38 48.26 122 46.76  4.74  8   .02  .4 1.2 GEY   1.2
97 MAY 15 1645 10.13 36 50.75 121 34.48  5.98 62 1 .11  .2  .3 SJB   2.7
97 MAY 15 1650 27.48 37 52.44 121 50.45 21.04  8   .25 3.1 5.3 GRN   1.5
97 MAY 15 1822 37.49 36 50.85 121 34.52  6.28 47 1 .09  .2  .3 SJB   2.1
97 MAY 15 1852 33.84 40  8.51 123 51.14 22.83 12 2 .05  .5  .3 MEN   1.6

97 MAY 15 1908 47.01 37 32.67 118 49.69  6.67 10 2 .03  .6  .8 MOR   1.0
97 MAY 15 1941  4.94 38 48.35 122 45.26  1.57 13   .02  .2  .5 GEY   1.8
97 MAY 16  146 36.71 38 51.32 122 47.61  1.23  9   .03  .3  .9 GEY   1.5
97 MAY 16  153 50.36 38 48.61 122 46.14  3.00  9   .02  .3  .6 GEY   1.5
97 MAY 16  504 47.15 38 49.18 122 46.53  2.28 20   .05  .2  .4 GEY   1.9

97 MAY 16  554 14.44 40 17.78 122  5.48 14.15 11   .04  .2  .7 SHA   2.3
97 MAY 16  728 55.59 37 54.68 118 48.24 11.48 31   .12  .7 1.2 MOL   2.4
97 MAY 16  836 55.70 37 17.79 121 40.46  2.34 21 2 .05  .2  .6 SFL   1.5
97 MAY 16  854 27.40 37 17.70 121 40.55  3.14 66 3 .05  .1  .3 SFL   1.9
97 MAY 16 1054 25.78 38 48.19 122 46.82  1.48  7   .01  .3 2.4 GEY   1.4

97 MAY 16 1242 13.59 37 17.83 121 40.53  3.33  9   .04  .5 1.8 SFL   1.1
97 MAY 16 1328 16.94 39 20.47 123 14.95  7.70 22 1 .04  .2  .8 MAA   1.7
97 MAY 16 1518 17.42 38 49.32 122 48.59  4.29  8   .02  .3  .8 GEY   1.0
97 MAY 16 1533 43.18 36  0.73 120 34.19  3.32  9   .03  .5 1.4 SLA   1.6
97 MAY 16 1544 26.42 38  2.14 118 42.30  2.32 18 1 .05 1.0 1.5 MOL   1.8

97 MAY 16 1557 31.10 36  0.75 120 34.29  4.02 16 2 .03  .3  .6 SLA   1.6
97 MAY 16 2029 54.60 37 39.51 118 53.73  6.67 11 1 .02  .5  .8 DOM   1.3
97 MAY 16 2258 32.36 38 47.77 122 48.52  4.29 19   .03  .2  .4 GEY   1.9
97 MAY 16 2313  3.82 37 31.90 118 43.34 10.40 18 2 .02  .3 1.0 WCN   1.2
97 MAY 16 2339 34.04 37 29.24 121 37.18  6.30 20 2 .04  .2  .4 HAM   1.2

97 MAY 17    5 33.14 36 19.31 120 31.10 14.73 13   .03  .3  .9 COA   1.7
97 MAY 17   13 19.57 37 36.71 119  1.39 11.22 12   .03  .8 1.6 MAM   1.1
97 MAY 17   21 38.23 36 19.21 120 30.84 16.66 28   .06  .2  .3 COA   2.1
97 MAY 17   36 44.38 38 48.48 122 45.20  1.22 16   .05  .2  .5 GEY   1.7
97 MAY 17   50 11.66 40 18.18 124 29.91  8.38  8 2 .05 1.3  .8 MEN   1.7

97 MAY 17  359 18.22 38 49.90 122 51.61  1.83 19 1 .05  .2  .6 GEY   1.6
97 MAY 17  517 16.35 36 38.39 121 15.37  5.85 23 2 .04  .2  .6 STN   1.3
97 MAY 17  537 10.04 37 32.92 118  1.27  0.05  7 1 .06 4.0 3.0 WHI # 1.9
97 MAY 17  704 10.02 38 50.20 122 52.67  3.50 37 2 .07  .1  .5 GEY   2.0
97 MAY 17  705 49.64 38 49.97 122 52.82  2.15 14   .03  .2  .6 GEY   1.7

97 MAY 17  746 40.51 37 37.17 118 51.14  5.01 13   .03  .3  .5 SMO   1.5
97 MAY 17 1013 27.08 38  1.75 118 43.06  1.16 27 1 .05  .4 1.7 MOL   2.0
97 MAY 17 1221 19.09 40 30.38 123 40.14 23.69 11   .04  .3  .5 EUR   2.4
97 MAY 17 1236 45.91 37 24.99 118 34.02 13.66  9 1 .03 1.9 3.6 RVL   1.5
97 MAY 17 1413 46.16 37 31.39 118 46.95  6.16 26 2 .05  .3  .7 MOR   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

97 MAY 17 1444 49.44 37 31.32 118 47.03  6.25 26   .05  .3  .8 MOR   2.3
97 MAY 17 1450 11.55 38 49.15 122 47.81  3.78 10   .01  .3  .5 GEY   1.4
97 MAY 17 1515 44.32 37 40.97 118 51.81  7.01  7   .03 2.2 1.5 DOM   1.0
97 MAY 17 1534 49.70 37 36.96 118 52.18  4.96 22   .07  .2  .3 SMO   1.8
97 MAY 17 1709 32.46 36  5.63 120 38.01  3.95 11   .02  .7  .7 SLA   1.6

97 MAY 17 1817 39.76 38 48.68 122 48.99  4.44 29   .03  .2  .3 GEY   2.0
97 MAY 17 2014 51.57 36  2.25 120 35.03  3.66  7   .01  .7 1.2 SLA   1.1
97 MAY 17 2046 27.73 36 58.99 120 57.37  0.66 11 1 .03 1.1 2.0 ORT   1.4
97 MAY 18    0 57.48 37 30.02 118 47.86 10.19 26   .05  .4  .8 MOR   2.5
97 MAY 18  346 57.71 37 30.57 121 52.30 11.18 16   .04  .3  .5 MIS   1.2

97 MAY 18  407 31.96 39 20.54 123 15.02  7.93 26 2 .05  .1  .7 MAA   1.8
97 MAY 18  439 51.22 37 39.30 118 55.85  3.16  9   .03  .4  .7 SMO   1.1
97 MAY 18  717 10.59 36  7.38 118  3.09  6.65 12 1 .05  .6 1.2 WWF   2.1
97 MAY 18  740  4.20 39 20.49 123 15.10  7.55 12 1 .03  .3  .9 MAA   1.4
97 MAY 18  929 24.12 39 35.45 122  2.48 24.28  8 1 .06 1.7 1.2 SAC   1.5

97 MAY 18  929 24.22 38 55.92 123  0.11  4.89  7 1 .01  .5 2.5 MAA   1.2
97 MAY 18 1432 14.17 38 48.77 122 48.77  3.77  7   .01  .4 1.0 GEY   1.0
97 MAY 18 1438 56.32 37 37.04 121 51.06 13.98  8   .01  .7 1.1 DAN   1.8
97 MAY 18 1448 59.17 40 16.85 121 52.07  0.87 13   .20  .613.7 SHA - 2.9
97 MAY 18 1449  6.97 40 16.59 121 52.66  0.37 38 2 .36  .4 1.8 SHA   2.6

97 MAY 18 1518 42.37 37 30.51 118 50.68 16.44 12   .43 2.0 3.6 MOR   1.6
97 MAY 18 1541 55.21 40 16.70 121 53.45  8.74 12 1 .08  .4 1.8 SHA   1.8
97 MAY 18 1643  9.83 40 16.84 121 53.44  9.16 11   .06  .4 1.7 SHA   1.8
97 MAY 18 1716 21.66 37 29.72 121 52.45  2.83 34 2 .06  .1  .4 MIS   1.4
97 MAY 18 1909 40.34 35 59.14 120 32.30  2.61  7 2 .03  .8 7.2 MID - 1.0

97 MAY 18 1925 14.78 36 46.43 121 16.95  8.63 60 1 .05  .1  .2 PAI   2.4
97 MAY 18 1931 26.98 36 46.36 121 16.95  8.34 56 1 .05  .1  .3 PAI   2.2
97 MAY 18 1937  1.06 37 29.64 118 50.58 10.11  7   .03  .8  .9 MOR   1.1
97 MAY 18 2131 26.30 38 46.56 122 44.94  2.37  8   .02  .3  .7 GEY   1.3
97 MAY 18 2223 10.09 38 49.14 122 47.90  3.64  7   .01  .4  .8 GEY   1.2

97 MAY 18 2253 42.57 36 34.50 121 10.18  6.01 28 1 .05  .2  .4 PIN   1.7
97 MAY 19   24 42.76 36 46.29 121 16.91  8.00 49 1 .05  .2  .3 PAI   1.5
97 MAY 19  406  4.99 35 58.88 118 19.04  7.76 11   .08  .4 1.5 WWF   2.0
97 MAY 19  438 12.83 36 41.28 121 19.15  4.63 39   .04  .1  .3 STN   1.7
97 MAY 19  600 40.24 37 31.39 118 46.21  3.39 29 2 .07  .3 1.1 WCN   2.5

97 MAY 19  812  8.24 36 41.29 121 19.12  4.69 35   .04  .2  .3 STN   1.6
97 MAY 19 1437  2.19 38 49.14 122 48.12  3.53  9   .01  .3  .6 GEY   1.2
97 MAY 19 1511 59.91 37 31.24 118 46.13  2.92 19   .05  .3 1.7 WCN   2.0
97 MAY 19 1543 42.82 38 49.16 122 47.98  3.68  8   .02  .4  .6 GEY   1.0
97 MAY 19 1621 23.27 38 48.75 122 48.29  3.48  8   .01  .4  .6 GEY   1.0

97 MAY 20  231  4.45 38 47.67 122 48.02  4.73 39   .04  .1  .3 GEY   2.2
97 MAY 20  443 47.50 37 32.24 118 49.67  7.32 15 2 .03  .4  .7 MOR   1.4
97 MAY 20  922 32.41 37 34.01 121 52.72  9.20 33 1 .04  .1  .3 SUN   1.4
97 MAY 20 1108 27.31 38 40.20 122 43.47  9.08 17 2 .04  .3  .6 NAP   1.5
97 MAY 20 1548 30.14 37  7.83 121 31.77  7.83 17   .02  .3  .5 CYN   1.2

--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

97 MAY 20 1756  1.27 40 58.26 122 22.91  5.00  7   .02  .7 8.1 SHA - 1.8
97 MAY 20 1825  8.26 37 37.15 118 53.49  2.66 23   .07  .2  .3 SHE   2.1
97 MAY 20 1846 22.36 39 32.68 123 23.49  7.50 10   .04  .3 1.2 MAA   1.6
97 MAY 20 1954 48.48 37 39.34 118 54.08  5.97  7   .01  .9 1.5 DOM   1.0
97 MAY 20 2005 24.72 37 29.47 118 50.40  9.74  8 1 .03  .5 1.1 MOR   1.0

97 MAY 20 2044 24.21 37 38.80 118 55.57  0.02  9   .06  .2  .4 SMO # 1.8
97 MAY 20 2044 24.80 37 38.29 118 54.81  5.26 19 2 .05  .2  .4 SMO   1.5
97 MAY 20 2059 28.81 37 38.55 118 54.62  4.31  9   .04  .4  .8 SMO   1.4
97 MAY 20 2211 17.78 37 36.86 118 53.93  2.38  7   .05  .5  .4 SHE   1.4
97 MAY 20 2215 36.51 36 52.87 121 36.81  7.22 68 1 .09  .1  .2 SJB   2.6

97 MAY 20 2230 54.06 37 38.86 118 54.65  5.16 18 2 .03  .3  .3 SMO   1.5
97 MAY 20 2248 56.00 37 37.18 118 53.39  2.91 22 1 .07  .2  .3 SHE   1.9
97 MAY 21   19 20.41 37 37.24 118 53.40  2.67  9   .05  .4  .4 SMO   1.4
97 MAY 21  243  0.30 38 16.80 119 20.82  1.14  8 1 .10  .9 3.6 WAK   1.8
97 MAY 21  256 32.59 37 27.13 118 35.83 12.42 25 1 .04  .2  .6 RVL   2.0

97 MAY 21  451 37.52 36 34.20 121  6.37  8.42 13 1 .05  .3  .9 BVL   1.0
97 MAY 21  453 33.09 35 58.50 120 31.39 11.25 53 1 .04  .2  .2 MID   2.8
97 MAY 21  859 18.70 36 10.37 120 13.53 10.96 18 2 .02  .2  .5 COA   2.1
97 MAY 21 1107 27.28 36  2.76 120 35.43  4.04 11 1 .03  .6  .7 SLA   1.1
97 MAY 21 1110 44.19 36 58.09 122 13.84  7.60 31 2 .11  .8 1.1 MON   1.4

97 MAY 21 1139 18.19 37 34.22 121 57.16  9.48 11 2 .02  .5  .7 HAY   1.0
97 MAY 21 1208 29.03 36 48.11 121 31.15  7.78 41 2 .07  .2  .3 SJB   1.4
97 MAY 21 1343 43.03 37 16.92 119 12.16  6.30 12   .03  .7 8.5 KAI - 2.1
97 MAY 21 1815 55.18 36 46.45 121 16.95  8.30 60   .06  .2  .3 PAI # 2.8
97 MAY 21 1905  5.31 36 46.37 121 16.93  7.59 11   .05  .4  .9 PAI   1.1

97 MAY 21 1937 25.12 38 48.71 122 48.66  3.61 12   .02  .3  .5 GEY   1.6
97 MAY 21 2052 37.89 37 36.88 118 51.47  5.58 12   .06  .3  .6 SMO   1.2
97 MAY 22   35 36.76 40 20.03 125  4.50  5.42  7   .2415.212.3 MEN - 2.2
97 MAY 22   55 34.21 38 54.36 122 41.51  0.91 10   .04  .3  .7 KON   1.8
97 MAY 22  323 38.94 36 15.10 120 24.47  8.12 26   .10  .3  .4 COA   2.3

97 MAY 22  437 40.21 36 34.13 121  7.16  7.94  7   .09  .6 2.3 BVL   1.2
97 MAY 22  509  8.93 37 37.77 121 55.01  1.54 10   .12  .4 4.6 DAN   1.3
97 MAY 22  634  2.82 36 34.39 121 11.98  4.53 41   .19  .3 1.0 PIN   2.4
97 MAY 22  656 25.99 36 49.82 121 24.45  8.44 50   .07  .2  .4 HOL   2.1

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
----------------------------------------------------------------------------
MAY 12
033233.3* 18.797N 107.104W  33N 4.1     0.9  28 OFF COAST OF JALISCO, MEXICO
033409.0  18.738N 107.008W  33N 3.9     0.9  31 OFF COAST OF JALISCO, MEXICO
035100.1  37.988N  48.038E  10G 4.4     1.0  33 NORTHWESTERN IRAN
044156.0  18.762N 107.093W  33N 5.2 4.8 0.7 112 OFF COAST OF JALISCO, MEXICO
073720.1? 20.04 S 172.28 W  33N 5.1     0.3  12 TONGA ISLANDS REGION
085302.4* 51.165S 138.572E  33N 4.2     0.4   9 SOUTH OF AUSTRALIA
133645.6   4.388S 102.848E  33N 5.1     0.9  27 SOUTHERN SUMATERA, INDONESIA
231753.5*  2.062N  97.614E  33N 4.4     1.0  18 NORTHERN SUMATERA, INDONESIA

MAY 13
070218.1* 43.778N 137.011E 300G 4.2     0.5  24 EASTERN SEA OF JAPAN
205603.5  63.054N 149.083W 100G         0.4   7 CENTRAL ALASKA

MAY 14
030833.7* 31.790N 115.776W   5G         1.0  16 BAJA CALIFORNIA, MEXICO
141420.6  33.135N  60.288E  33N 4.9     0.8  28 NORTHERN IRAN
154840.5? 14.49 N  93.54 W  33N 4.4     0.9  20 NEAR COAST OF CHIAPAS, MEXICO
170457.7& 66.230N 149.690W   9               14 NORTHERN ALASKA. <AEIC>. ML 2.5

MAY 15
002404.3  45.245N   6.677E   5G         1.3  19 FRANCE
014714.0  59.960N 153.282W 151*         0.7  34 SOUTHERN ALASKA
035833.5  34.379N  89.722E  33N 4.8     0.6  28 XIZANG
043920.8  14.362N  89.874W 272D 5.0     0.9  87 GUATEMALA
100514.0  35.407N  27.423E  33N 4.6     0.8  20 DODECANESE ISLANDS
133152.9  34.352N 116.875W   5G         0.9  29 SOUTHERN CALIFORNIA. ML 3.0
142901.8  33.883N 118.471W   5G         0.9  25 SOUTHERN CALIFORNIA. ML 3.0
        (PAS). Felt near Los Angeles International Airport.
150841.6* 31.565N 115.896W   5G         0.9  19 BAJA CALIFORNIA, MEXICO
155450.2  16.949S 173.485W  33N 5.4 5.1 0.8 111 TONGA ISLANDS
164509.5  36.868N 121.568W   5G         0.6  10 CENTRAL CALIFORNIA. ML 2.8 (GS).
180133.1  21.656S 169.839E  33N 5.3 5.6 0.9  55 LOYALTY ISLANDS REGION
183024.4  36.396N  70.846E 185D 4.9     0.7  33 HINDU KUSH REGION, AFGHANISTAN
235328.7  63.258N 152.027W  33N         0.8   6 CENTRAL ALASKA

MAY 16
012320.5  40.552N 114.963W   5G 3.6     1.4  53 NEVADA. ML 4.4 (GS)
070048.5  41.044N  20.202E  10G 5.3 5.3 1.3 144 ALBANIA. ML 4.9 (ROM). 
        Damage to some old houses in the Lake Ohrid, Albania area.
        Felt at Edhessa, and Kastoria, Greece.
111807.6* 30.257N  97.081E  33N 5.5 5.0 1.0  28 XIZANG
124531.5  33.459N 118.323W  10G         1.1  22 SOUTHERN CALIFORNIA. ML 2.9 (GS)
141657.4* 21.667S 169.854E  33N 5.4 5.3 1.1  38 LOYALTY ISLANDS REGION
175009.5*  0.187S  16.835W  10G 5.0 4.7 0.9  15 NORTH OF ASCENSION ISLAND
183821.9  21.450S 177.442W 294D 4.8     0.8  57 FIJI ISLANDS REGION
211757.9* 11.097N  61.285W  33N 4.5     1.1  17 WINDWARD ISLANDS
222040.3  34.979N 116.981W   5G         1.0  27 SOUTHERN CALIFORNIA. ML 3.0
224102.5* 55.488N 162.367E  33N 5.2 4.6 0.9  62 NEAR EAST COAST OF KAMCHATKA

MAY 17
002614.3*  8.381N  58.487E  10G 4.7 5.1 1.1  23 CARLSBERG RIDGE
021019.6  26.905S  69.307W 106D 5.5     0.8 110 NORTHERN CHILE. Mw 5.6
        Felt (V) at Copiapo; (IV) at El Salvador, Inca de Oro and
        Potrerillos; (III) at Diego de Almagro; (II) at Taltal.
035823.9  39.594N  76.969E  33N 5.2 4.9 1.1  36 SOUTHERN XINJIANG, CHINA. One
                                                person injured at Jiashi.
085804.6* 57.340N 155.551W 120D 3.9     1.2  15 ALASKA PENINSULA

MAY 18
045834.8  30.368S 177.277W  33N 5.5 5.4 0.8  58 KERMADEC ISLANDS, NEW ZEALAND.
070833.1* 20.548S 174.484W  63D 4.5     0.6  15 TONGA ISLANDS
100127.7  54.023N 165.171W  47* 4.8     1.0  50 FOX ISLANDS, ALEUTIAN ISLANDS
134051.3  52.970N 167.835W  33N 4.5     0.8  26 FOX ISLANDS, ALEUTIAN ISLANDS
160849.0?  7.84 S 120.26 E 217D 4.7     0.7   7 FLORES SEA
214530.4  34.748N 120.466W   5G         0.6  19 SOUTHERN CALIFORNIA. ML 3.2

MAY 19
000319.2* 23.647N 108.707W  10G 4.2     1.0  19 GULF OF CALIFORNIA
022548.7   6.426N  82.270W  10G 5.1 5.1 1.0  80 SOUTH OF PANAMA
072004.2   9.525S  78.698W  50D 4.7     0.6  35 NEAR COAST OF NORTHERN PERU
091523.7  52.998N 164.046W  33N 4.8     0.8  43 SOUTH OF ALASKA. ML 4.4 (AEIC).
112343.3? 16.35 N 100.95 W  33N 4.3     0.9  21 NEAR COAST OF GUERRERO, MEXICO
131747.1  35.244N 117.239W   5G         0.8  24 CENTRAL CALIFORNIA. ML 3.1 (GS).
194534.0* 34.734N  85.474W   5G         0.4   5 ALABAMA. mbLg 2.9 (GS).
225439.3  34.920N 116.925W   5          0.7  26 SOUTHERN CALIFORNIA. ML 2.7
232541.3  27.492S  68.771W 103D 4.3     0.7  17 CHILE-ARGENTINA BORDER REGION

MAY 21
141028  Q 20.5  S 169.1  E  80      6.5 0.9 100 VANUATU ISLANDS
225129  Q 23.2  N  80.0  E  40  6.1     0.7  82 SOUTHERN INDIA

Note:  Computer users can get faster access to the Weekly Seismicity      
 Reports in any of three ways:
       1. World-Wide-Web (WWW) access:    http://quake.wr.usgs.gov
       2. Anonymous FTP access:           quake.wr.usgs.gov 
                                          (in pub/www/QUAKES/WEEKREPS)
       3. Email Access:    (send email to michael@andreas.wr.usgs.gov)
Notes for Table 1:
       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.