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 or reply to this message. Seismicity Report for Northern California, the Nation, and the World for the week of May 26 - June 1, 1994 Data and text prepared by Steve Walter and Barry Hirshorn U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 Graphics by Quentin Lindh San Francisco Bay Area During the seven-day period ending at midnight on Wednesday, June 1, 1994 the U.S. Geological Survey office in Menlo Park recorded 22 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Nine were as large as M2 including a M3 event on the San Andreas near San Juan Bautista. This total compares to 23 earthquakes during the previous seven-day period (May 19 - 25), only one of which was as large as M2. This past week saw more earthquakes as large as M2 than in any week since early March. No one area was responsible for the increased activity; instead several areas that often experience events of this magnitude were all active during the week. The San Andreas fault was active in two areas. First, the creeping segment south of San Juan Bautista experienced a small cluster of activity Tuesday evening beginning with a M3.1 earthquake, the week's largest, and followed by a pair of M2.1 aftershocks (#5 in figure 1). Early the following morning a pair of M2's occurred along the Peninsula segment of the San Andreas about three miles west of Golden Gate Park in San Francisco (#1/1). No reports were received that either event was felt. A slightly smaller M1.5 occurred earlier in the week just to the southeast and about five miles northwest of Pacifica. Activity in the East Bay was focused in areas of the central Calaveras and Mt. Lewis faults. The central Calaveras experienced a M2.2 Sunday morning about six miles northeast of Morgan Hill (#3/1). Later that day a M2.1 occurred just two miles north of Morgan Hill along one of the small, sub-parallel faults that splay off the Calaveras in this area (#4/1). Two M2's occurred in the seismogenic zone defined by aftershocks of the 1986 M5.7 Mt. Lewis earthquake. The first of these was a M2.0 last Saturday morning that was located about seven miles southeast of Livermore (#2/1). A slightly larger M2.3 occurred about five miles farther south on Wednesday morning (#6/1). Northern & Central California Along with the M3.1 near San Juan Bautista three other areas in northern California produced M3 earthquakes. Two of these were in the Cape Mendocino/Gorda Plate region with a M3.1 last Thursday that was located about six miles southwest of Petrolia (#1/2) and a M3.2 last Friday in the Gorda Plate about 110 miles west of Crescent City (#3/2). The remaining M3 occurred in the Geysers geothermal area on Monday afternoon (#6/2). Other events in the north state include a 23-km-deep event Monday night about 22 miles northeast of Petrolia (#8/2), a M2.2 on the northern Maacama fault 14 miles northwest of Willits (#7/2), and a M2.4 in the northern Sierra Nevada about ten miles southeast of Chester (#2/2). Central California saw a fair number of small earthquakes along the creeping San Andreas, only one however that was as large as M2. The Coalinga area experienced three M2 earthquakes, the largest a M2.9 early Saturday morning (#5/2). To the west, there was a M2.2 in the San Ardo area (#9/2) and a pair of M2's along the coast northwest of San Simeon (#4/2). Long Valley Caldera For the sixth straight week there were no earthquakes as large as M2 inside the caldera. The only M2 events in the region were a M2.5 near Mt. Hopkins (#1/3) and a M2.0 on the southern Hilton Creek fault (#2/3). USA Seismicity (May 25 - June 1) According to information provided by the National Earthquake Information Center there were no notable earthquakes in the lower 48 states outside of California. Activity within southern California was dominated, as usual by aftershocks to the Northridge earthquake. The past week saw three Northridge aftershocks that were as large as M3, the largest a M3.6 (#1/4). A comparably sized event also occurred Sunday evening in the Coso Valley area of the southern Owens Valley (#2/4). The Planet Earth (May 25 - June 1) The western rim of the Pacific basin, usually the most seismically active region on the planet, was unusually quiet during the past week with only a couple of earthquakes that were as large as M5. Instead the northern margins of the Indo-Australian plate produced several of the week's largest temblors. Largest of these was a Ms6.2 in a rural area of northwestern Myanmar (Burma) (#5/5). There were no reports of injuries or damage. To the south, a Ms5.7 occurred near the Nicobar Islands (#2/5). In both cases, the earthquakes occurred along the northwestern extension of the Java trench where the Indo-Australian plate is sliding obliquely beneath the continental landmass of southeast Asia. The western margin of the plate was also active with a pair of M5's on the Carlsberg Ridge (#3/5) and a slightly small M5.1 on the ridge just offshore of Oman. Finally, a Ms5.7 occurred in northwestern Usbekistan in the Kyzyl-Kum desert west of Tashkent (#1/5). Other earthquakes of note during the week were a Mb5.1 in western Honshu, Japan that was felt strongly in the cities of Nagoya and Yokkaichi (#4/5) and a Ms6.1 in northwestern Venezuela, near the Colombian border, that caused some damage to homes in San Cristobal, Venezuela (#6/5). 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 94 MAY 26 724 16.23 40 39.01 122 23.07 26.45 7 1 .06 .9 2.0 SHA 1.7 94 MAY 26 748 13.93 38 50.40 122 48.08 1.98 11 .06 .3 .9 GEY 1.5 94 MAY 26 915 8.11 37 19.05 121 40.97 8.29 17 1 .05 .3 .7 SFL 1.0 94 MAY 26 1058 54.21 38 49.37 122 48.01 4.21 11 .04 .4 .6 GEY 1.2 94 MAY 26 1211 20.39 38 49.51 122 47.35 2.09 8 .04 .3 .6 GEY 1.2 94 MAY 26 1231 24.29 40 18.55 124 30.92 11.11 16 2 .08 .9 .4 MEN 2.4 94 MAY 26 1238 0.27 37 17.83 121 40.41 3.03 11 .04 .3 .7 SFL .9 94 MAY 26 1454 23.59 40 17.32 124 23.80 21.63 20 1 .10 1.0 .3 MEN 2.4 94 MAY 26 1543 15.61 40 17.16 124 23.94 21.53 23 1 .10 .9 .3 MEN 3.2 94 MAY 26 1711 54.73 39 14.14 122 43.77 1.75 7 .04 .7 8.6 BAR - 1.2 94 MAY 26 1806 6.77 37 39.27 122 1.80 5.64 10 4 .10 .4 .6 HAY 1.0 94 MAY 26 1833 36.58 37 27.31 118 49.08 8.74 9 .08 .9 1.2 MOR 1.1 94 MAY 26 1934 4.79 40 17.48 124 18.36 8.70 9 1 .06 .6 .8 MEN 1.3 94 MAY 26 2001 3.59 38 16.48 122 15.41 0.07 14 .22 .5 1.9 NAP * 2.2 94 MAY 26 2021 26.19 38 50.15 122 49.78 1.46 8 .10 .5 1.0 GEY 1.0 94 MAY 26 2024 20.61 38 47.92 122 46.85 0.80 8 .08 .3 .7 GEY 1.1 94 MAY 26 2057 8.91 37 38.20 118 51.57 6.30 8 .08 .6 1.3 SMO 1.0 94 MAY 26 2201 38.44 36 57.88 121 33.43 1.55 15 .26 .6 7.3 SAR 1.2 94 MAY 27 5 15.06 38 49.24 122 48.00 3.69 8 .04 .4 .6 GEY 1.0 94 MAY 27 126 49.91 37 27.12 118 49.52 10.85 36 3 .10 .3 .7 MOR 2.6 94 MAY 27 331 52.69 36 59.93 121 39.19 4.29 11 .11 1.1 .6 SAR .8 94 MAY 27 357 47.61 38 47.75 122 44.89 1.37 10 .04 .3 .7 GEY 1.7 94 MAY 27 1033 46.73 38 48.47 122 47.90 1.57 8 .05 .3 .4 GEY 1.2 94 MAY 27 1108 11.13 38 49.42 122 48.65 2.03 7 .05 .4 .7 GEY 1.4 94 MAY 27 1115 7.40 39 32.62 123 22.37 9.61 16 3 .09 .3 .9 MAA 1.3 94 MAY 27 1115 42.02 40 15.34 121 22.37 6.77 10 1 .06 .7 1.5 ALM 1.7 94 MAY 27 1356 33.99 37 42.19 122 31.85 10.27 15 3 .15 1.1 1.1 SFP 1.4 94 MAY 27 1426 48.82 40 12.38 121 6.13 0.09 24 1 .17 .7 2.0 ALM 2.5 94 MAY 27 1431 2.26 41 23.91 126 20.70 9.96 34 1 .19 6.3 7.1 PON 3.1 94 MAY 27 1431 12.60 41 5.55 125 31.40 18.10 14 .2412.221.6 PON - 2.6 94 MAY 27 1434 34.16 36 33.44 121 9.10 7.40 24 1 .04 .2 .6 PIN 1.6 94 MAY 27 1442 47.70 38 50.01 122 52.67 2.16 10 1 .08 .4 1.5 GEY 1.2 94 MAY 27 1658 51.84 40 12.47 121 7.31 4.93 10 1 .12 1.6 4.4 ALM 1.8 94 MAY 27 1930 58.50 37 18.86 121 41.50 1.96 11 .03 .3 1.0 SFL 1.1 94 MAY 27 2140 2.97 37 32.54 118 49.08 1.46 7 .11 .5 1.0 MOR 1.2 94 MAY 27 2345 6.45 37 31.64 118 41.38 14.50 10 .02 .5 1.7 WCN 1.4 94 MAY 28 19 4.30 36 26.68 121 1.20 5.36 14 .05 .3 .6 BIT 1.2 94 MAY 28 131 56.58 36 38.59 121 15.52 5.56 23 .04 .2 .5 STN 1.4 94 MAY 28 245 24.81 36 20.59 120 54.13 7.22 23 2 .07 .2 .5 BIT 1.6 94 MAY 28 303 25.90 36 34.19 121 1.46 8.39 18 1 .10 .4 .9 PAN 1.2 94 MAY 28 320 53.94 38 48.56 122 47.92 0.62 7 .04 .3 1.9 GEY 1.1 94 MAY 28 449 36.42 38 29.22 122 52.87 0.23 7 .11 .4 1.6 MAR 1.3 94 MAY 28 504 23.96 38 48.81 122 49.78 1.10 8 .02 .3 .7 GEY 1.5 94 MAY 28 505 13.07 38 48.82 122 49.72 0.24 20 .11 .3 1.1 GEY 2.2 94 MAY 28 505 13.57 38 48.15 122 50.78 1.75 7 .10 1.111.1 GEY - 2.2 --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 94 MAY 28 638 10.97 36 29.42 121 2.76 5.61 18 1 .05 .3 .6 BIT 1.3 94 MAY 28 804 27.42 36 33.43 121 9.16 7.11 20 .03 .2 .6 PIN 1.3 94 MAY 28 809 37.21 36 33.43 121 9.17 6.74 9 .02 .3 1.0 PIN .9 94 MAY 28 837 32.82 36 34.68 121 10.76 6.59 18 .03 .3 .6 PIN 1.0 94 MAY 28 950 15.56 35 50.08 121 20.80 3.62 74 2 .11 .3 .5 SSM 2.6 94 MAY 28 1021 3.27 36 15.23 121 44.13 9.70 31 1 .06 .5 .9 SUR 1.7 94 MAY 28 1111 32.82 36 12.83 120 14.79 8.42 22 2 .14 1.0 2.1 COA 4.4 94 MAY 28 1143 59.90 36 12.98 120 14.88 12.41 22 3 .11 .5 .7 COA 2.1 94 MAY 28 1146 43.11 36 13.25 120 14.33 13.57 12 .06 .5 .8 COA 1.3 94 MAY 28 1150 56.32 36 36.61 121 5.75 8.05 24 .12 .3 .8 BVL 1.2 94 MAY 28 1206 36.00 37 34.99 121 41.56 4.45 52 2 .09 .2 .3 HAM 2.0 94 MAY 28 1227 42.35 38 49.96 122 50.13 1.25 7 .06 .4 1.1 GEY 1.4 94 MAY 28 1253 47.42 36 2.95 120 34.98 4.69 12 .07 .6 .5 SLA 1.2 94 MAY 28 1406 52.61 40 33.08 121 42.33 9.62 14 4 .11 .5 1.8 SHA 1.8 94 MAY 28 1432 58.72 38 50.09 122 48.04 0.50 38 .16 .2 .8 GEY 2.8 94 MAY 28 1434 9.15 38 49.60 122 47.93 0.03 8 .09 .3 2.1 GEY * 2.0 94 MAY 28 1435 42.94 38 50.26 122 48.16 0.23 15 .06 .2 .9 GEY 1.6 94 MAY 28 1906 47.53 36 11.60 120 14.95 11.62 34 3 .14 .4 .7 COA 2.1 94 MAY 28 2002 41.84 38 50.37 122 49.54 3.42 14 .04 .2 1.0 GEY 1.7 94 MAY 28 2026 37.54 37 30.73 118 45.97 5.41 35 2 .09 .3 .5 WCN 2.3 94 MAY 28 2039 20.78 38 49.25 122 50.72 0.61 9 .05 .3 .9 GEY 1.2 94 MAY 28 2040 26.19 38 50.26 122 49.33 2.81 9 .11 .5 1.3 GEY 1.3 94 MAY 28 2225 6.94 37 17.69 121 40.48 1.97 14 .04 .3 .7 SFL 1.3 94 MAY 29 149 29.24 38 49.50 122 47.83 5.29 22 .09 .3 .6 GEY 2.4 94 MAY 29 224 20.02 38 47.83 122 44.41 2.36 7 .04 .3 1.0 GEY 1.2 94 MAY 29 231 40.96 40 7.29 121 0.60 2.16 12 1 .16 1.7 3.7 ALM- 1.7 94 MAY 29 406 25.02 36 56.32 121 34.69 8.50 13 2 .12 .6 .9 SAR 1.2 94 MAY 29 419 27.39 37 9.59 121 33.54 1.42 16 .08 .3 1.7 CYN 1.1 94 MAY 29 608 48.88 38 50.24 122 49.25 3.29 21 .07 .2 .9 GEY 2.0 94 MAY 29 751 27.76 37 32.35 118 26.17 7.70 19 2 .08 .3 .8 CHV 1.8 94 MAY 29 813 27.22 38 47.65 122 44.80 2.13 16 .06 .2 .5 GEY 1.8 94 MAY 29 1226 39.57 37 10.93 121 34.94 3.41 61 1 .09 .2 .6 CYN 2.3 94 MAY 29 1242 59.87 36 36.85 121 5.66 5.85 17 2 .15 .5 1.4 BVL 1.0 94 MAY 29 1307 9.51 38 50.67 122 47.89 1.20 7 .02 .3 .9 GEY 1.1 94 MAY 29 1330 24.71 38 49.35 122 48.02 4.03 12 .03 .3 .6 GEY 1.4 94 MAY 29 1717 4.34 37 39.61 121 39.09 8.49 9 .07 .5 1.4 HAM 1.0 94 MAY 29 1852 42.72 40 23.77 124 24.34 29.02 8 1 .05 1.9 1.3 MEN 1.6 94 MAY 29 1856 22.13 37 9.32 121 39.53 8.09 68 2 .11 .2 .3 SCV 2.2 94 MAY 29 1917 29.83 35 53.48 120 25.96 10.91 17 2 .06 .5 .5 GOL 1.2 94 MAY 29 2056 14.97 40 43.84 124 19.81 23.64 11 1 .07 1.7 1.0 EUR 1.8 94 MAY 29 2101 41.44 39 36.62 123 25.57 8.61 33 1 .11 .2 .4 MAA 2.1 94 MAY 29 2319 7.62 36 28.31 121 2.53 4.88 32 1 .05 .2 .5 BIT 1.9 94 MAY 30 644 3.45 38 50.27 122 47.43 0.11 8 .04 .3 2.1 GEY * 1.4 94 MAY 30 645 33.08 38 50.13 122 47.61 1.62 21 .08 .2 .7 GEY 1.7 94 MAY 30 646 52.68 38 50.03 122 47.48 2.01 10 .06 .3 2.2 GEY 1.6 --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 94 MAY 30 757 14.16 37 38.09 118 51.34 5.52 13 1 .06 .4 .6 SMO 1.2 94 MAY 30 1314 59.30 38 46.52 122 35.14 6.70 10 .06 .4 1.6 GVL 1.1 94 MAY 30 1439 47.07 37 38.97 118 55.87 6.64 12 1 .08 .4 .7 SMO 1.2 94 MAY 30 1624 27.09 37 37.97 118 51.28 5.43 23 1 .09 .3 .5 SMO 1.7 94 MAY 30 1814 58.58 39 17.60 122 47.77 0.87 8 .19 .716.7 BAR - 1.4 94 MAY 30 1852 31.80 38 50.15 122 49.23 2.50 8 .02 .3 .8 GEY 1.2 94 MAY 30 2124 4.94 40 22.36 124 36.83 28.25 11 1 .07 1.9 1.2 MEN 1.9 94 MAY 30 2253 59.74 37 31.27 118 45.19 7.27 10 .05 .6 1.4 WCN 1.2 94 MAY 30 2255 56.47 38 50.03 122 49.35 1.28 10 .05 .4 .8 GEY 3.2 94 MAY 30 2257 9.24 38 50.02 122 49.62 1.88 24 .13 .3 1.4 GEY 2.6 94 MAY 30 2259 41.91 38 49.84 122 49.50 1.64 8 .04 .4 .8 GEY 1.2 94 MAY 30 2305 48.67 38 50.03 122 49.09 2.57 17 .05 .2 .8 GEY 1.8 94 MAY 30 2338 57.18 37 38.01 118 50.29 10.07 9 .12 .9 2.0 HCF 1.1 94 MAY 30 2352 36.65 36 22.16 120 57.00 5.73 7 .02 .4 1.2 BIT 1.6 94 MAY 31 3 53.20 37 37.84 118 50.42 5.84 8 .15 .8 1.2 HCF 1.2 94 MAY 31 100 34.20 40 12.99 124 8.16 13.97 10 1 .09 .5 .8 MEN 1.3 94 MAY 31 116 8.37 36 29.41 121 2.70 5.60 11 1 .04 .4 .7 BIT 1.0 94 MAY 31 156 41.05 36 34.67 121 2.17 7.96 15 .11 .4 .8 PAN 1.5 94 MAY 31 426 9.73 36 35.14 121 11.01 7.65 21 1 .05 .2 .9 PIN 1.4 94 MAY 31 430 0.17 37 38.29 118 52.40 9.31 8 .09 1.1 2.5 SMO 1.3 94 MAY 31 545 0.28 40 28.66 123 55.65 23.21 24 2 .15 .4 .6 EUR 2.6 94 MAY 31 546 13.27 37 9.22 121 39.06 6.08 8 .09 .5 1.0 SCV .8 94 MAY 31 711 26.78 36 35.91 121 6.05 5.59 15 1 .08 .3 1.0 BVL 1.0 94 MAY 31 917 14.17 36 20.61 120 54.75 4.02 27 .05 .3 .6 BIT 1.5 94 MAY 31 1110 43.87 35 58.80 120 31.89 7.11 10 .07 .7 1.0 MID .8 94 MAY 31 1119 51.86 40 25.29 121 32.47 7.26 15 3 .06 .3 .5 LAS 1.4 94 MAY 31 1125 11.33 38 50.52 122 49.15 2.20 13 .09 .3 .9 GEY 1.9 94 MAY 31 1220 34.43 40 25.31 121 32.34 7.33 18 2 .08 .3 .5 LAS 1.5 94 MAY 31 1230 47.25 38 50.94 122 47.03 0.18 10 .14 .4 1.7 GEY 1.2 94 MAY 31 1256 40.83 38 49.90 122 49.58 1.00 8 .03 .3 .8 GEY 1.3 94 MAY 31 1257 34.10 38 47.17 122 46.26 2.91 11 .03 .3 .7 GEY 1.5 94 MAY 31 1307 28.35 37 38.98 118 51.36 5.38 10 .09 .4 .8 HCF 1.4 94 MAY 31 1310 11.44 36 32.10 121 4.86 8.31 22 .05 .2 .6 BVL 1.4 94 MAY 31 1329 6.61 36 0.16 120 53.11 7.84 46 2 .07 .2 .5 ROB 2.3 94 MAY 31 1358 3.49 40 29.04 124 12.35 20.70 11 2 .10 .7 .5 EUR 1.5 94 MAY 31 1415 25.26 35 59.17 120 31.58 7.98 12 .05 .4 .6 MID 1.5 94 MAY 31 1424 17.84 35 59.25 120 31.42 7.54 12 .04 .4 .7 MID 1.3 94 MAY 31 1557 10.14 36 35.17 121 10.96 7.60 65 3 .08 .2 .4 PIN 2.4 94 MAY 31 1652 21.26 38 48.03 122 48.83 3.71 13 .03 .3 1.0 GEY 1.9 94 MAY 31 1654 11.03 38 48.02 122 48.82 4.27 8 .01 .3 .7 GEY 1.3 94 MAY 31 1845 36.21 40 25.19 121 32.35 7.06 7 .05 .6 .9 LAS 1.3 94 MAY 31 2022 1.59 40 25.31 121 32.42 7.04 7 .04 .5 1.2 LAS 1.3 94 MAY 31 2147 31.12 38 49.44 122 48.57 4.24 14 .09 .3 .8 GEY 1.6 94 MAY 31 2155 45.08 38 53.32 122 33.65 0.25 8 2 .14 .9 2.1 BAR- 1.3 94 MAY 31 2201 21.31 38 49.07 122 47.73 3.45 19 .10 .3 .7 GEY 2.0 --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 94 MAY 31 2332 24.22 35 59.15 120 31.50 8.09 9 2 .06 .6 1.2 MID 1.2 94 JUN 1 312 14.71 38 48.66 122 48.04 2.06 14 .04 .2 .4 GEY 1.8 94 JUN 1 546 32.69 36 48.19 121 32.34 8.08 79 .23 .3 .5 SJB 3.1 94 JUN 1 547 26.45 36 47.54 121 30.96 8.00 17 .13 .6 .9 SJB 2.1 94 JUN 1 605 28.68 36 47.93 121 31.47 7.81 45 .22 .4 .7 SJB 2.1 94 JUN 1 640 34.39 37 24.69 121 45.68 5.86 23 .06 .3 .8 ALU 1.5 94 JUN 1 1118 21.78 37 45.88 122 34.57 4.67 24 .23 .5 1.6 SFP 2.0 94 JUN 1 1123 46.55 37 45.39 122 33.80 6.71 50 .23 .4 1.1 SFP 2.3 94 JUN 1 1302 47.41 38 50.39 122 48.17 1.86 8 .04 .3 .7 GEY 1.2 94 JUN 1 1429 23.68 38 48.01 122 46.38 1.16 11 .11 .3 .7 GEY 1.8 94 JUN 1 1508 43.10 38 58.24 123 6.96 4.16 7 .02 .3 1.1 MAA 1.2 94 JUN 1 1601 3.57 37 30.43 121 41.21 6.55 67 .13 .2 .8 HAM 2.3 94 JUN 1 1927 25.52 38 49.36 122 47.85 4.06 24 .09 .2 .6 GEY 2.2 94 JUN 1 2039 17.97 38 49.04 122 46.68 2.12 7 .04 .4 .6 GEY 1.7 94 JUN 1 2308 36.60 38 42.13 122 53.81 6.77 7 .05 .6 2.0 ROG 1.0 94 JUN 2 5 31.08 38 49.39 122 46.35 1.09 9 .06 .4 .8 GEY 1.5 94 JUN 2 35 14.40 35 46.54 121 14.29 0.88 30 .17 .5 3.5 SSM 2.3 94 JUN 2 117 0.52 38 49.31 122 46.92 1.58 15 .08 .3 .6 GEY 1.6 94 JUN 2 206 42.74 38 48.25 122 48.73 1.04 9 .04 .3 .5 GEY 1.2 94 JUN 2 211 27.64 37 37.86 118 56.07 6.97 7 .09 1.2 1.2 SMO 1.6 94 JUN 2 518 32.40 37 38.24 118 56.43 6.45 12 .14 .6 1.1 SMO 1.9 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 25 004451.2* 22.976N 142.055E 33N 5.1 0.8 39 VOLCANO ISLANDS REGION 014127.9* 23.094N 142.068E 33N 5.0 0.7 39 VOLCANO ISLANDS REGION 033540.4* 42.897N 2.462E 10G 0.9 6 PYRENEES. mbLg 3.4 (MDD). 074258.9 40.298N 63.166E 33N 5.2 5.7 0.9 86 NORTHWESTERN UZBEKISTAN 120725.1* 36.491N 5.632W 5G 0.8 9 STRAIT OF GIBRALTAR. mbLg 2.9 140118.0* 45.571N 7.720E 10G 0.8 6 NORTHERN ITALY 143121.8* 0.382S 16.468W 10G 5.1 4.5 1.0 54 NORTH OF ASCENSION ISLAND 163654.1 1.964S 138.847E 33N 5.3 5.1 0.9 52 NEAR NORTH COAST OF IRIAN JAYA 184220.4 7.605N 94.292E 33N 5.6 5.7 1.1 104 NICOBAR ISLANDS, INDIA 190857.3? 7.55 N 94.25 E 33N 4.4 0.4 5 NICOBAR ISLANDS, INDIA 210459.6 20.425S 178.032W 365D 5.4 0.6 69 FIJI ISLANDS REGION 214152.5 34.248N 118.466W 5G 0.9 42 SOUTHERN CALIFORNIA. ML 3.0 221036.0? 6.66 N 60.89 E 10G 5.3 4.8 1.0 21 CARLSBERG RIDGE 233232.1* 45.993N 13.723E 10G 0.3 6 NORTHERN ITALY. MD 2.7 (TRI) 235139.6* 7.650N 94.236E 33N 4.8 4.6 1.0 13 NICOBAR ISLANDS, INDIA MAY 26 003006.5* 5.695N 61.540E 10G 5.2 4.9 0.9 27 CARLSBERG RIDGE 014516.2* 35.288N 4.035W 10G 1.0 16 STRAIT OF GIBRALTAR. mbLg 3.3 034628.5? 39.94 N 69.47 E 33N 4.6 3.8 0.6 7 TAJIKISTAN 043148.1* 23.879N 122.460E 33N 4.8 4.3 1.2 16 TAIWAN REGION 052010.5 32.973S 70.864W 33N 0.9 10 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN). 074706.0* 31.195S 117.255E 10G 0.9 5 WESTERN AUSTRALIA 074949.4 34.270N 118.482W 10G 0.9 28 SOUTHERN CALIFORNIA. ML 2.7 080149.9 4.408S 134.640E 33N 5.1 4.9 1.3 17 IRIAN JAYA REGION, INDONESIA 083118.6 35.410N 3.965W 10G 0.5 7 STRAIT OF GIBRALTAR. mbLg 4.2 085838.5 35.239N 3.951W 10G 3.6 1.2 19 STRAIT OF GIBRALTAR. mbLg 3.3 090337.8? 35.33 N 3.97 W 10G 1.3 9 STRAIT OF GIBRALTAR. mbLg 3.0 092518.0* 35.174N 4.106W 10G 3.9 0.8 22 STRAIT OF GIBRALTAR. mbLg 3.5 093244.7* 35.420N 3.841W 10G 1.1 7 STRAIT OF GIBRALTAR. mbLg 2.7 101659.7* 35.132N 4.129W 10G 4.0 1.0 20 STRAIT OF GIBRALTAR. mbLg 3.6 122750.3* 35.099N 4.099W 10G 4.4 0.9 26 STRAIT OF GIBRALTAR. mbLg 3.7 130848.5* 35.330N 3.922W 10G 1.1 10 STRAIT OF GIBRALTAR. mbLg 2.6 131629.7* 32.877S 71.160W 33N 0.9 10 NEAR COAST OF CENTRAL CHILE. MD 3.6 (SAN). 140541.4* 35.359N 3.686W 10G 0.4 10 STRAIT OF GIBRALTAR. mbLg 3.0 165311.9* 35.402N 3.919W 10G 0.6 8 STRAIT OF GIBRALTAR. mbLg 2.7 174005.5% 35.434N 3.768W 10G 0.8 10 STRAIT OF GIBRALTAR. mbLg 2.7 180602.9% 35.374N 3.827W 10G 1.0 10 STRAIT OF GIBRALTAR. mbLg 3.0 200537.4% 35.466N 3.836W 10G 0.6 7 STRAIT OF GIBRALTAR. mbLg 2.6 222658.5 34.092N 117.319W 15G 0.8 49 SOUTHERN CALIFORNIA. ML 3.3 222936.1? 59.48 N 155.30 W 383? 3.2 3.2 40 SOUTHERN ALASKA. mbLg 3.0 (MDD). 233542.9* 14.948N 54.925E 10G 5.1 1.0 17 ARABIAN SEA MAY 27 000352.5% 35.302N 3.962W 10G 0.9 12 STRAIT OF GIBRALTAR. mbLg 3.3 000741.4 35.280N 3.993W 9 0.8 12 STRAIT OF GIBRALTAR. mbLg 2.8 001118.0 59.459N 153.499W 148* 0.7 40 SOUTHERN ALASKA 002543.8% 35.473N 3.840W 10G 0.7 7 STRAIT OF GIBRALTAR. mbLg 2.6 025127.1 59.228N 151.650W 12 0.9 47 KENAI PENINSULA, ALASKA. ML 2.9 040959.8% 35.413N 3.914W 10G 0.9 13 STRAIT OF GIBRALTAR. mbLg 2.9 091425.0% 35.164N 3.776W 30* 0.7 7 STRAIT OF GIBRALTAR. mbLg 2.8 145337.8 35.522N 139.889E 33N 4.8 0.9 13 NEAR S. COAST OF HONSHU, JAPAN MAY 28 012122.5 42.053N 142.894E 33N 4.8 1.2 53 HOKKAIDO, JAPAN REGION 080431.2 35.270N 136.305E 36D 5.1 1.1 62 WESTERN HONSHU, JAPAN. Felt. 144851.0 34.335N 118.702W 10G 0.8 37 SOUTHERN CALIFORNIA. ML 3.2 171511.4 34.343N 118.761W 10G 1.2 45 SOUTHERN CALIFORNIA. ML 3.6 MAY 29 141150.3 20.609N 94.158E 33N 6.2 6.2 1.1 50 MYANMAR. Mw 6.5 (GS), 6.5 (HRV). 232641.7 34.248N 118.709W 5G 1.5 30 SOUTHERN CALIFORNIA. ML 2.7 MAY 30 032225.8 36.023N 117.814W 5G 0.9 62 CALIFORNIA-NEVADA BORDER REGION. ML 3.5 (GS). 122421.4 34.289N 118.564W 10G 0.8 28 SOUTHERN CALIFORNIA. ML 2.6 154319.3 34.234N 118.615W 10G 0.9 30 SOUTHERN CALIFORNIA. ML 2.7 MAY 31 174158.2 7.353N 72.111W 33N 6.1 5.6 0.7 137 NORTHERN COLOMBIA. Mw 6.0 (GS), 6.0 (HRV). Felt at Arauca, Bogota, Bucaramanga, Cucuta, Manizales and Sincelejo. Also felt at Caracas, Venezuela. 185859.7* 7.558N 72.160W 33N 4.9 0.8 33 NORTHERN COLOMBIA 204555.0 7.308N 72.118W 33N 5.6 4.6 0.7 85 NORTHERN COLOMBIA JUN 01 031347 Q 11.8 N 61.2 W 70 5.6 0.8 88 WINDWARD ISLANDS 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.