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 October 24 - 30, 1996 Stephen R. Walter U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 San Francisco Bay Area Seismicity continues at low ebb in the Bay Area. During the seven-day period ending at midnight on October 30, 1996 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. Only two were as large as M2. This total compares to 21 earthquakes during the previous seven-day period (October 17 - 23), three of which were as large as M2. The two M2 earthquakes included a M2.2 last Thursday afternoon at the south end of the Concord fault six miles northeast of Danville (#1/1) and a M2.1 early Sunday morning on the creeping San Andreas about two miles southeast of San Juan Bautista (#2/1). Northern & Central California The region was relatively quiet during the past week. Leading the list was a pair of M3.0 events on the Mendocino fracture zone about 35 miles west of Cape Mendocino (#1/2). Neither was large enough to have been felt onshore. Closer to shore were a pair of M2.0 earthquakes (#4/2), the second of which occurred beneath the coastal area about six miles northeast of Petrolia. To the north, a M2.3 earthquake occurred southeast of Eureka (#6/2). With a focal depth of about 27 kilometers, it was clearly within the seismogenic zone that defines the upper part of the subducting Gorda Plate. Activity in the Coast Range was limited to a M3.1 event at the Geysers geothermal area last Thursday evening, followed by a pair of M2 shocks in the same location over the next two days (#3/2). In central California the only notable earthquake along the San Andreas was a M2.1 on the southern creeping segment about 13 miles northwest of Parkfield (#2/2). Two M2.0 earthquakes occurred along the Big Sur coast, the first on Saturday morning about 18 miles west of San Simeon (#7/2), the second early Monday afternoon about nine miles southeast of Sur Point (#9/2). Activity in the eastern Sierra Nevada was equally light with the only earthquake as large as M2 a M2.8 about nine miles northeast of Markleeville (#8/2). Long Valley Caldera A small cluster of M1 events occurred early in the week along the southwest edge of the resurgent dome just east of Mammoth Lakes (#1/3). A M2.1 Wednesday morning two miles southeast of Mammoth Lakes was too small to have been felt (#2/3). USA Seismicity (October 20 - 22) According to data provided by the National Earthquake Information Center there were no notable earthquakes in the lower 48 states outside of California. Southern California experienced a pair of felt events in the Santa Barbara area. The first and largest was a M4.3 last Wednesday afternoon near Ojai that was felt throughout the area (#1/4). It was followed about an hour later by a M3.5 aftershock that was felt at Ojai and The following evening by a M3.6 aftershock that also was probably felt at Ojai. Early Friday morning a M3.3 occurred about two miles northeast of Yucca Valley, an aftershock to the Landers earthquake (June 28, 1992, M7.3)(#2/4). The Planet Earth (October 20 - 22) The largest earthquake on the planet was a M6.0 near the north Coast of eastern Siberia that was felt on the Chukotka Peninsula towns of Egvekinot and Provideniya (#4/5). Slightly smaller was a M5.7 near the coast of Peru that was strongly felt at Moquegua and Ilo, Peru (#5/5). Other events of note include a pair of Mt's along the southern East Pacific Rise (#1/5), a M5.5 east of the southern Kurils (#2/5), and an ongoing sequence in the Andreanof Islands of the central Aleutians that was capped this week by a M5.1 last Thursday (#3/5). 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 96 OCT 24 906 34.71 39 8.26 123 3.36 4.34 20 .07 .2 .7 MAA 1.8 96 OCT 24 915 27.74 36 57.91 121 27.17 3.74 34 .08 .2 .3 CYS 1.4 96 OCT 24 1107 25.36 39 25.35 123 15.66 13.91 8 .18 .7 4.5 MAA 1.6 96 OCT 24 1417 53.00 37 32.14 118 52.10 1.90 7 .02 1.0 6.3 MOR - 1.3 96 OCT 24 1632 50.83 40 25.21 125 2.53 1.90 24 .09 1.7 5.0 MEN 3.0 96 OCT 24 1815 34.13 36 57.72 121 26.99 2.99 30 .08 .2 .5 CYS# 1.6 96 OCT 24 2208 30.13 37 21.12 121 43.06 5.81 11 2 .03 .3 1.0 ALU 1.0 96 OCT 24 2213 3.80 36 2.16 120 35.25 8.32 35 1 .08 .2 .3 SLA 2.1 96 OCT 24 2355 28.81 37 53.53 121 55.82 17.82 41 .08 .2 .3 CON 2.2 96 OCT 25 13 20.04 38 46.34 122 43.06 2.49 12 .06 .4 .6 GEY 1.3 96 OCT 25 16 41.09 37 53.43 121 56.00 17.28 28 .08 .4 .6 CON 1.7 96 OCT 25 48 51.95 38 46.80 122 44.71 4.99 8 .03 .4 1.2 GEY 1.4 96 OCT 25 126 31.25 38 47.62 122 44.91 2.52 45 1 .07 .1 .3 GEY 3.1 96 OCT 25 128 51.99 38 47.85 122 45.02 0.21 8 .08 .3 1.4 GEY 1.4 96 OCT 25 301 36.54 36 28.31 121 2.66 5.53 33 .07 .2 .5 BIT 1.8 96 OCT 25 531 13.83 38 49.17 122 48.52 3.83 8 .02 .3 .6 GEY 1.4 96 OCT 25 700 47.17 36 2.21 121 33.74 11.59 21 1 .04 .4 1.3 SUR 1.9 96 OCT 25 813 49.46 36 41.91 121 20.13 4.99 12 .03 .3 .7 STN .9 96 OCT 25 1020 41.23 40 22.74 124 31.20 18.15 10 .07 2.0 .4 MEN 2.0 96 OCT 25 1116 15.40 35 59.69 120 33.15 5.20 13 1 .04 .4 .6 MID 1.3 96 OCT 25 1219 48.34 36 45.15 121 24.69 5.63 22 3 .07 .2 .5 SJB 1.3 96 OCT 25 1516 58.45 37 30.85 118 48.59 6.38 19 1 .05 .2 .6 MOR 1.4 96 OCT 25 1544 43.74 37 30.82 118 48.50 7.37 21 2 .04 .2 .5 MOR 1.4 96 OCT 25 1712 15.61 38 46.19 122 43.94 1.76 31 .11 .2 .3 GEY 2.4 96 OCT 25 1727 38.72 35 43.28 118 4.38 7.50 10 .05 .5 1.2 WWF 2.1 96 OCT 25 1740 41.74 37 31.18 118 48.57 5.23 19 .06 .3 .5 MOR 1.2 96 OCT 25 1745 23.03 37 38.19 118 53.44 10.85 15 .07 .8 1.2 SMO 1.4 96 OCT 25 1809 20.18 36 57.91 121 27.24 0.14 7 .09 .9 7.5 CYS # 1.0 96 OCT 25 2106 10.18 36 54.48 121 37.72 2.01 37 .13 .2 .7 SJB 1.8 96 OCT 25 2253 26.86 37 39.24 118 56.67 5.50 13 .05 .3 .6 SMO 1.4 96 OCT 26 109 58.82 37 39.30 118 56.50 6.44 15 .08 .4 .8 SMO 1.5 96 OCT 26 146 21.55 37 39.22 118 56.64 5.01 12 .02 .3 .6 SMO 1.3 96 OCT 26 219 35.23 37 39.60 118 56.79 6.91 8 .05 .8 .9 SMO 1.2 96 OCT 26 312 52.53 37 39.14 118 56.43 6.55 17 .08 .3 .7 SMO 1.4 96 OCT 26 431 25.32 37 39.76 118 55.60 6.20 7 .01 .8 1.2 DOM 1.0 96 OCT 26 627 43.74 37 38.89 118 56.52 6.39 19 .08 .3 .6 SMO 1.8 96 OCT 26 738 15.22 37 39.02 118 56.71 6.84 16 .07 .4 .5 SMO 1.6 96 OCT 26 828 46.43 37 39.10 118 56.72 4.62 9 .02 .4 .8 SMO 1.3 96 OCT 26 847 32.53 38 46.48 122 45.03 0.04 9 .08 .3 .7 GEY## .9 96 OCT 26 847 39.47 38 46.97 122 45.79 0.08 21 1 .23 .3 1.1 GEY # 1.8 96 OCT 26 1031 27.38 37 39.16 118 56.67 5.06 8 .04 .8 .7 SMO 1.2 96 OCT 26 1050 35.26 40 44.65 124 2.46 26.91 11 .02 .7 .6 EUR 2.3 96 OCT 26 1147 27.25 37 32.61 118 27.77 6.74 14 .01 .3 1.7 CHV 1.7 96 OCT 26 1249 5.72 36 7.33 120 4.57 3.22 27 .08 .5 1.5 COA 2.1 96 OCT 26 1403 52.94 37 36.64 118 49.22 7.68 12 .08 .6 .5 HCF 1.3 --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 96 OCT 26 1528 49.56 40 36.01 124 14.08 21.40 10 2 .02 .5 .6 EUR 1.8 96 OCT 26 1528 50.08 38 26.40 118 32.24 18.31 12 1 .07 1.6 2.8 MOL 2.4 96 OCT 26 1625 31.38 38 48.93 122 48.62 3.61 15 .02 .2 .4 GEY 1.7 96 OCT 26 1646 56.49 35 42.91 121 30.28 0.08 27 1 .15 .7 1.2 SSM # 2.0 96 OCT 26 1649 1.89 37 25.04 118 19.19 6.08 19 1 .05 .6 .8 CHV 2.1 96 OCT 26 2022 22.10 38 48.75 122 46.90 1.55 32 .06 .1 .2 GEY 2.3 96 OCT 26 2034 20.39 38 47.68 122 48.46 4.88 7 .03 .4 1.0 GEY 1.3 96 OCT 26 2056 21.72 36 32.07 121 7.12 2.68 22 .06 .3 .4 PIN 1.7 96 OCT 26 2115 31.58 36 47.18 121 24.14 5.17 12 1 .12 .6 .9 HOL 1.3 96 OCT 26 2147 30.37 38 45.66 119 38.05 4.63 19 .07 .3 1.3 WAK 2.8 96 OCT 27 145 25.45 36 18.99 120 12.43 0.03 8 .45 .9 9.2 COA## 1.8 96 OCT 27 316 33.82 37 38.69 118 52.33 6.42 10 .07 .6 .9 SMO 1.2 96 OCT 27 405 12.27 37 54.60 118 37.36 9.70 14 1 .02 1.0 .6 MOL 1.7 96 OCT 27 919 3.06 40 24.04 125 4.17 4.25 43 .15 1.9 2.1 MEN 3.0 96 OCT 27 929 53.59 36 48.95 121 31.58 3.72 55 .16 .2 .3 SJB 2.1 96 OCT 27 951 30.27 37 11.47 122 3.15 14.39 18 .07 .3 1.4 BLM 1.2 96 OCT 27 951 44.69 37 11.53 122 3.09 13.36 18 .07 .3 1.3 BLM 1.2 96 OCT 27 1121 0.69 37 39.07 118 56.52 6.51 21 2 .08 .3 .4 SMO 1.8 96 OCT 27 1304 25.66 36 35.69 120 49.54 3.21 11 .06 1.0 7.2 CRV - 1.0 96 OCT 27 1435 59.06 37 31.19 118 48.64 4.30 10 .03 1.0 1.0 MOR 1.1 96 OCT 27 1624 17.23 38 51.06 122 47.50 1.31 9 .05 .3 .9 GEY 1.6 96 OCT 27 1624 42.82 38 51.17 122 47.44 1.71 7 .03 .3 1.1 GEY 1.4 96 OCT 27 2025 8.38 38 47.64 122 46.13 4.48 7 .02 .4 1.1 GEY 1.2 96 OCT 27 2036 43.29 38 47.67 122 46.15 4.47 8 .03 .3 1.0 GEY 1.3 96 OCT 27 2120 20.72 38 47.70 122 46.20 4.73 10 .02 .3 .7 GEY 1.5 96 OCT 27 2307 0.02 37 35.64 118 49.66 1.94 14 .02 .3 .1 MOR 1.7 96 OCT 28 17 49.32 36 18.13 120 52.74 5.24 29 .12 .2 .5 BIT 2.0 96 OCT 28 120 49.53 37 34.27 118 48.49 3.66 8 2 .05 1.3 .6 MOR 1.1 96 OCT 28 427 56.64 35 57.63 120 30.37 10.70 32 3 .06 .3 .2 MID 1.7 96 OCT 28 504 0.33 38 46.44 122 35.03 5.51 13 .04 .3 1.1 GVL 1.6 96 OCT 28 516 35.72 37 38.87 118 56.89 5.90 18 .11 .4 .5 SMO 1.5 96 OCT 28 534 17.61 37 39.11 118 56.90 5.45 18 1 .07 .3 .5 SMO 1.2 96 OCT 28 554 36.43 38 22.98 122 35.36 2.12 7 .04 .4 1.8 ROG 1.7 96 OCT 28 820 40.66 36 14.70 120 48.37 5.63 18 1 .10 .4 .3 BIT 1.2 96 OCT 28 839 59.76 40 21.37 124 10.92 22.99 11 1 .08 .4 .6 MEN 2.0 96 OCT 28 1136 29.74 37 39.12 118 56.68 5.65 22 3 .06 .3 .4 SMO 1.8 96 OCT 28 1424 43.32 37 4.31 121 47.45 4.28 15 1 .05 .3 .7 LOM 1.0 96 OCT 28 1535 1.36 36 33.41 121 7.24 4.21 14 1 .06 .3 1.2 PIN 1.1 96 OCT 28 1731 22.88 38 46.96 122 43.81 2.54 7 .02 .9 .5 GEY 2.2 96 OCT 28 1731 25.76 38 47.67 122 44.49 4.69 17 .15 .4 1.1 GEY 1.8 96 OCT 28 1845 12.23 37 37.57 118 52.39 4.66 16 .07 .4 .6 SMO 1.5 96 OCT 28 1944 45.32 37 53.45 122 12.20 5.33 16 .16 .3 .6 CON 1.4 96 OCT 28 2022 41.16 37 25.87 118 36.72 10.44 14 .05 .6 1.7 RVL 1.9 96 OCT 28 2114 54.84 36 14.72 121 45.39 1.93 15 .04 .8 1.1 SUR 1.8 96 OCT 28 2151 38.03 36 12.99 121 46.68 4.46 18 .07 1.0 .3 SUR 1.8 --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 96 OCT 28 2152 33.81 36 12.72 121 46.83 4.64 24 1 .09 .7 .2 SUR 2.0 96 OCT 29 139 4.79 37 36.65 118 54.76 4.54 23 4 .07 .3 .4 SHE 1.5 96 OCT 29 146 25.11 36 2.27 120 35.38 3.32 7 .01 .8 2.8 SLA 1.0 96 OCT 29 207 4.26 37 34.31 118 50.04 1.96 14 1 .05 .6 .3 MOR 1.6 96 OCT 29 234 18.88 38 49.09 122 48.17 4.24 16 .03 .2 .4 GEY 1.6 96 OCT 29 524 48.67 38 50.78 122 47.89 0.90 10 .03 .3 .9 GEY 1.7 96 OCT 29 607 41.07 37 34.55 118 50.47 12.45 17 .06 .5 .6 MOR 1.6 96 OCT 29 638 36.09 37 37.63 118 52.92 1.98 9 .04 .9 1.4 SMO 1.1 96 OCT 29 729 25.92 36 42.90 121 7.08 1.22 7 .36 2.0 6.3 PAN # 1.0 96 OCT 29 1051 39.24 38 47.04 122 45.50 1.21 18 .04 .2 .4 GEY 1.7 96 OCT 29 1204 6.37 37 27.33 119 0.40 3.33 20 1 .10 .8 2.6 SIL 1.5 96 OCT 29 1230 51.18 37 5.53 121 50.05 7.93 24 2 .06 .3 .4 LOM 1.2 96 OCT 29 1633 5.02 38 49.70 122 45.94 1.31 10 .06 .3 .8 GEY 1.7 96 OCT 29 1953 32.51 36 40.95 120 51.83 2.76 11 2 .05 1.3 3.4 ORT 1.2 96 OCT 29 2019 49.27 38 47.87 122 46.80 0.51 9 .18 .5 1.1 GEY 1.6 96 OCT 30 301 5.02 38 29.07 118 31.56 1.26 30 .06 1.2 7.8 MOL - 2.3 96 OCT 30 352 47.62 37 27.85 121 48.78 6.45 29 2 .05 .2 .3 ALU 1.3 96 OCT 30 451 4.35 37 10.20 121 34.27 3.57 44 .05 .1 .3 CYN 1.5 96 OCT 30 1040 21.40 38 47.63 122 44.45 1.47 14 .06 .2 .6 GEY 1.5 96 OCT 30 1042 25.05 38 47.60 122 44.70 0.84 15 .05 .2 .4 GEY 1.6 96 OCT 30 1429 13.41 38 46.31 122 43.75 2.84 21 .08 .2 .4 GEY 1.8 96 OCT 30 1517 34.11 37 35.44 118 52.93 4.74 10 .06 .4 .7 MOR 1.1 96 OCT 30 1534 44.59 37 35.79 118 52.88 4.89 20 1 .09 .3 .5 MOR 1.4 96 OCT 30 1720 18.02 37 37.80 118 55.97 5.61 17 .11 .4 .6 SMO 2.1 96 OCT 30 1720 52.64 38 49.54 122 48.18 3.63 7 .04 .4 1.3 GEY 1.3 96 OCT 30 1748 45.69 37 37.96 118 55.99 6.90 9 .09 .6 1.3 SMO 1.1 96 OCT 30 1942 41.65 38 48.84 122 48.28 3.38 7 .02 .3 .7 GEY 1.2 96 OCT 30 2312 0.24 38 47.92 122 44.62 1.52 15 .05 .2 .6 GEY 2.1 96 OCT 31 200 51.05 37 34.25 118 49.13 4.91 9 .02 .4 .6 MOR 1.2 96 OCT 31 206 24.11 37 35.40 118 48.95 7.32 14 .07 .3 .6 MOR 1.4 96 OCT 31 238 46.37 36 42.01 121 5.21 8.77 9 .14 1.2 3.3 PAN 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 ------------------------------------------------------------------------------ OCT 20 042912.4* 55.933N 160.772E 33N 4.5 1.8 24 KAMCHATKA 093937.9* 48.032S 31.840E 10G 4.7 1.0 13 SOUTH OF AFRICA 141032.6? 9.73 N 126.28 E 33N 4.3 1.2 10 MINDANAO, PHILIPPINE ISLANDS 142026.8 4.914S 129.153E 254 4.7 1.0 22 BANDA SEA 150002.5 42.816N 17.875E 10G 1.5 124 ADRIATIC SEA. ML 4.6 170024.4* 8.063N 126.824E 33N 4.2 1.2 17 MINDANAO, PHILIPPINE ISLANDS 170243.8 36.796N 21.583E 33N 4.0 0.7 16 SOUTHERN GREECE 182012.0? 17.39 S 179.00 W 550G 4.4 0.8 13 FIJI ISLANDS REGION 190655.1 42.617N 13.329E 5G 4.1 1.4 46 CENTRAL ITALY. 191738.9 36.828N 21.570E 33N 4.0 0.7 28 SOUTHERN GREECE 192047.3* 0.340N 126.479E 63* 4.8 0.8 22 NORTHERN MOLUCCA SEA 205544.6% 10.523N 60.902W 33N 0.6 6 TRINIDAD. MD 3.6 (TRN). OCT 21 025913.0* 8.026N 126.884E 33N 4.6 1.2 22 MINDANAO, PHILIPPINE ISLANDS 032021.6 12.684N 40.443E 33N 4.8 4.3 0.9 87 ETHIOPIA 115351.3? 5.32 S 154.37 E 100G 4.4 0.7 9 SOLOMON ISLANDS 193301.9 19.200S 177.477W 500G 5.0 1.0 38 FIJI ISLANDS REGION 200434.0* 12.621S 114.833E 10G 4.5 1.5 11 NORTHWEST OF AUSTRALIA 222330.9* 20.815S 179.113W 600G 4.4 0.9 34 FIJI ISLANDS REGION 224619.6* 13.141N 144.997E 49* 4.5 0.6 12 MARIANA ISLANDS OCT 22 005928.7? 37.83 S 176.91 E 150G 4.9 1.0 7 NORTH ISLAND, NEW ZEALAND 041022.4* 51.524N 177.330W 33N 4.7 1.6 32 ANDREANOF ISLANDS, ALEUTIAN IS. 050106.4 10.523S 165.943E 33N 5.1 4.8 0.9 58 SANTA CRUZ ISLANDS 070205.2 35.989N 70.957E 108D 4.6 0.9 50 HINDU KUSH REGION, AFGHANISTAN 082847.5* 54.121S 7.264E 10G 4.7 1.2 12 BOUVET ISLAND REGION 085955.8* 22.631S 174.905W 33N 5.0 0.2 14 TONGA ISLANDS REGION 102716.0 7.338N 34.946W 10G 5.0 1.0 28 CENTRAL MID-ATLANTIC RIDGE 105125.4* 60.937S 154.049E 10G 4.9 0.7 21 WEST OF MACQUARIE ISLAND 115503.0* 53.151N 159.955E 33N 4.6 1.0 25 NEAR EAST COAST OF KAMCHATKA 120911.3* 6.515S 147.703E 33N 4.7 0.7 16 EASTERN NEW GUINEA REG., P.N.G. 132451.9* 5.636S 130.608E 33N 4.0 1.0 6 BANDA SEA 143253.9* 34.091N 141.827E 0* 4.3 1.1 14 OFF EAST COAST OF HONSHU, JAPAN 165454.9? 0.22 N 119.79 E 33N 4.0 1.2 9 MINAHASSA PENINSULA, SULAWESI 200929.5* 7.103S 146.900E 33N 4.1 0.4 9 EASTERN NEW GUINEA REG., P.N.G. 203721.1* 50.261S 115.852W 10G 4.9 5.5 1.5 32 SOUTHERN EAST PACIFIC RISE OCT 23 010157.3* 49.349S 116.523W 10G 4.8 5.1 1.3 22 SOUTHERN EAST PACIFIC RISE 015005.6* 49.404S 117.015W 10G 4.9 4.9 1.5 19 SOUTH PACIFIC OCEAN 020149.3 52.316N 31.828W 10G 4.2 3.9 0.7 18 NORTHERN MID-ATLANTIC RIDGE 025122.4* 7.132S 129.436E 167? 4.4 1.5 10 BANDA SEA 031340.9 37.613N 141.536E 85D 4.7 0.9 29 NEAR EAST COAST OF HONSHU, JAPAN 101854.9* 22.204S 170.789E 33N 4.9 1.6 31 LOYALTY ISLANDS REGION 112755.3 9.912N 126.081E 54? 5.2 5.0 1.2 59 MINDANAO, PHILIPPINE ISLANDS 112835.9* 4.216N 157.014E 33N 4.8 1.3 8 E. CAROLINE ISLANDS, MICRONESIA 113440.9* 9.944N 126.242E 33N 5.1 1.0 24 MINDANAO, PHILIPPINE ISLANDS 120549.4 44.630N 149.377E 33N 5.5 4.7 1.1 154 KURIL ISLANDS 120740.9 37.247N 20.948E 33N 3.8 0.8 17 IONIAN SEA 124326.2* 9.921N 126.039E 33N 4.7 0.8 21 MINDANAO, PHILIPPINE ISLANDS 142025.8? 16.84 S 178.82 W 400G 4.4 0.9 17 FIJI ISLANDS REGION 151805.8* 9.912N 126.047E 33N 4.5 1.0 31 MINDANAO, PHILIPPINE ISLANDS 161734.6 51.566N 177.231W 44D 4.7 1.1 47 ANDREANOF ISLANDS, ALEUTIAN IS. 163213.1 34.055N 139.261E 2 3.9 0.9 27 NEAR S. COAST OF HONSHU, JAPAN 165841.7* 4.434S 144.114E 33N 4.1 0.5 8 NEAR N COAST OF NEW GUINEA, PNG. 174048.6& 63.300N 145.250W 7 52 CENTRAL ALASKA. . ML 2.9 (AEIC). 175350.7* 5.445S 147.095E 150G 4.8 0.8 14 EASTERN NEW GUINEA REG., P.N.G. 191356.1* 9.896N 126.154E 33N 5.0 1.1 14 MINDANAO, PHILIPPINE ISLANDS 192034.1* 40.434N 73.574E 100G 3.9 1.4 15 KYRGYZSTAN 203911.1* 1.713N 127.891E 100G 4.2 0.5 7 HALMAHERA, INDONESIA 204138.9* 77.117N 125.634E 30D 3.6 0.7 9 LAPTEV SEA 220927.6 34.388N 119.441W 15G 0.9 86 SOUTHERN CALIFORNIA. ML 4.3 Felt in the Santa Barbara area. 222717.4 34.449N 119.355W 15G 0.7 30 SOUTHERN CALIFORNIA. ML 2.8 223307.7* 9.853N 125.940E 84? 4.5 1.1 25 MINDANAO, PHILIPPINE ISLANDS 231818.1 34.414N 119.352W 10G 0.9 51 SOUTHERN CALIFORNIA. ML 3.5 Felt at Ojai. OCT 24 014417.3* 55.375N 160.926E 100G 4.4 0.4 14 KAMCHATKA 021455.2 34.194N 139.085E 21 4.8 0.8 47 NEAR S. COAST OF HONSHU, JAPAN 024747.6 55.448N 142.589W 10G 4.1 0.7 44 GULF OF ALASKA 031859.4 36.859N 21.535E 10G 4.7 1.2 47 SOUTHERN GREECE.Felt at Messinia 031906.3* 25.733N 142.793E 33N 4.9 1.0 16 VOLCANO ISLANDS REGION 044641.0? 20.77 S 179.02 W 600G 4.9 1.2 26 FIJI ISLANDS REGION 083643.7* 39.623N 144.627E 33N 4.6 0.6 9 OFF EAST COAST OF HONSHU, JAPAN 095631.9* 6.871N 93.074E 33N 4.7 1.4 23 NICOBAR ISLANDS, INDIA 102358.8 51.384N 178.492W 53 5.1 4.4 1.0 116 ANDREANOF ISLANDS, ALEUTIAN IS. 102601.6* 21.834S 175.423W 33N 4.8 1.1 13 TONGA ISLANDS 134440.6 63.345N 145.289W 7 0.7 17 CENTRAL ALASKA. ML 3.0 (AEIC). 135829.7* 31.004S 179.961W 400G 4.3 1.1 37 KERMADEC ISLANDS REGION 193154.1 66.965N 173.159W 20G 6.0 5.9 1.0 288 NEAR N. COAST-EASTERN SIBERIA. Felt on the Chukotka Peninsula. 215739.5* 67.222N 174.438W 20G 5.1 4.5 0.7 18 NEAR N. COAST OF EASTERN SIBERIA OCT 25 000416.3* 67.054N 173.037W 20G 4.9 1.0 26 NEAR N. COAST OF EASTERN SIBERIA 012631.4 38.777N 122.731W 5G 0.8 29 NORTHERN CALIFORNIA. ML 3.3 013705.6% 34.305S 70.292W 10G 0.4 10 CHILE-ARGENTINA BORDER. MD 3.0 032516.8 35.367N 139.087E 33N 4.6 0.9 24 NEAR S. COAST OF HONSHU, JAPAN. Felt at Yokohama. 034117.8* 10.397N 126.349E 33N 4.8 0.7 12 PHILIPPINE ISLANDS REGION 054823.7 34.416N 119.385W 10G 0.9 51 SOUTHERN CALIFORNIA. ML 3.6 071458.2* 21.863S 173.970W 33N 5.2 4.6 0.6 33 TONGA ISLANDS 113901.4? 11.85 N 126.11 E 33N 4.8 1.4 12 PHILIPPINE ISLANDS REGION 115131.3 34.122N 116.409W 5G 1.0 27 SOUTHERN CALIFORNIA. ML 3.3 195941.7 17.288S 70.084W 116D 5.7 1.0 92 NEAR COAST OF PERU. Mw 5.7 Felt (V) at Moquegua and Ilo, Peru; (IV) at Tacna, Peru and Iquique, Chile; (III) at Tarata and Arequipa, Peru; and (II) at Mollendo, Peru. 212336.5* 63.470N 145.232W 5G 1.7 12 CENTRAL ALASKA. ML 4.1 (PMR). OCT 26 102549.9 32.787S 68.848W 33N 4.4 1.0 18 MENDOZA PROVINCE, ARGENTINA. MD 5.0 (SAN). Felt (V) in Maipu Department. Also felt in the Mendoza area. 122536.2* 42.561N 0.195E 10G 0.4 6 PYRENEES. mbLg 3.5 (MDD). 200535.9* 63.766N 130.259W 10G 4.3 1.7 8 SOUTHERN YUKON TERRITORY, CANADA OCT 27 091857.1* 40.408N 125.550W 10G 0.8 25 OFFSHORE-NORTHERN. CALIF. ML 3.1 130714.0* 51.121N 177.137W 33N 4.6 1.1 13 ANDREANOF ISLANDS, ALEUTIAN IS. 162918.4? 11.87 N 142.85 E 33N 5.0 0.4 7 SOUTH OF MARIANA ISLANDS 165109.7* 34.188N 139.151E 33N 5.1 0.8 28 NEAR S. COAST OF HONSHU, JAPAN 205755.6? 1.52 N 122.74 E 83? 5.1 1.0 7 MINAHASSA PENINSULA, SULAWESI 224128.7* 44.216N 149.898E 33N 5.0 1.1 23 KURIL ISLANDS OCT 28 065938.4* 40.208N 76.256W 5G 1.4 6 PENNSYLVANIA 090556.2* 51.863N 178.281W 58* 5.0 1.0 24 ANDREANOF ISLANDS, ALEUTIAN IS. 093318.1* 51.664N 173.317W 33N 4.9 0.8 25 ANDREANOF ISLANDS, ALEUTIAN IS. 200144.2* 51.423N 175.307W 33N 5.0 1.2 37 ANDREANOF ISLANDS, ALEUTIAN IS. 224357.5? 19.01 N 104.78 W 33N 4.2 0.6 11 NEAR COAST OF JALISCO, MEXICO OCT 29 020021.7 34.500N 32.223E 33N 4.1 0.6 16 CYPRUS REGION 045051.0? 45.36 N 149.50 E 52D 4.6 0.5 12 KURIL ISLANDS 103113.8* 45.113N 152.015E 33N 5.0 4.6 1.0 45 EAST OF KURIL ISLANDS 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.