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 August 18 - August 24, 1994 Data and text prepared by Ronan Mandel, 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 Activity returned to a quiet level during the past week. For the seven-day period ending at midnight on Wednesday, August 24, 1994 the U.S. Geological Survey office in Menlo Park recorded 19 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Of these, four were large as M2.0. This total compares to 24 earthquakes during the previous seven-day period (August 10 - August 18), seven of which were as large as M2. The larger earthquakes recorded this week occurred mostly in the south bay region. The recording period started off with a M2.0 about four miles northwest of Watsonville in the afternoon of last Thursday (#1/1). This event was followed by a M2.3 in a similar location four days later (#4/1). The only other events at the M2.0 level were a M2.0 four miles southwest of Tres Pinos at around noon on Saturday(#2/1), and a M 2.3 on Saturday evening along the Concord fault about six miles north of Walnut Creek. Northern & Central California Seismic activity for the past week in the Northern and Central California regions was at a quiet level, with no events above M3.0 being recorded. However, there were some interesting events, including a small cluster of events on the San Andreas fault near Point Arena. There was an M2.6 late Thursday night, a M2.9 Friday afternoon, and a M2.0 Tuesday night(#3/2). The last time there was any activity in this region was back in January of 1993. Other interesting events this week include a cluster of earthquakes near Coalinga, a M2.7 and a M2.2 on Thursday morning, a M2.0 on Wednesday morning, and a M2.4 on Wednesday afternoon((#1/2). During the past week there was also a group of events northwest of San Benito including a M2.6 late Thursday night, a M2.9 Friday afternoon, and a M2.1 Tuesday evening (#2/2). The only other event of note was a M2.1 Wednesday night on the northern Maacama fault (#4/2) Long Valley Caldera Once again it was a quiet week for the Long Valley Caldera region. There were only seven events above M1 detected during the past seven days. There were a pair of events within the Caldera, at the south edge of the resurgent dome, about seven miles east of Mammoth Lakes, a M2.4 on Thursday night, and a M 2.0 early Friday morning (#1/3). The other events in the region included a M2.3 Monday evening thirteen miles southeast of Mammoth Lakes, near Mt. Morrison (#2/3), and a M2.6 Tuesday morning, 12 miles northwest of Bishop, southeast of Lake Crowley. USA Seismicity (August 18 - August 24) Seismicity around the continental United States was at a fairly quiet level this past week with few felt events. Of those that were felt was a M3.6 at around midnight local time on the 17th along the Montana Idaho border and caused a rock burst in the Lucky Friday mine near Mullan Idaho(#1/4). There was another M3.6 event on the 18th in Southern California that was a part of the continuing Northridge aftershock sequence(#2/4). Other events include a M3.5 near the Missouri Arkansas border on Saturday that was felt in the Walnut Ridge, AR region (#3/4), and a M2.2 in central Colorado on Tuesday that was felt in the town of Gothic The Planet Earth (August 18 - August 24) Around the globe this past week were a number of interesting events. THe largest earthquake was a M6.6 last Friday (utc) in Argentina that occurred at a depth of approximately 565 kilometers(#4/5). Although this quake was widely felt, there have been no reports of damage as of yet, probably due to the depth of the quake. The most damaging quake of the week was a M5.4 on last Thursday which left at least 164 people dead, 289 injured, and up to 10,000 homeless(#2/5). This was the most devastating quake to strike the region since 1980 when a quake there killed more than four thousand people in the same region. Other moderate quakes included a M5.9 that shook the Lake Tanganiyaka Region in Tanzania on Thursday (#1/5), a swarm of quakes struck east of the Kuril Islands, the largest of which was a M5.9 on Thursday (#3/5), a M5.9 event took place near Lake Baikal in Russia (#5/5), and a M5.9 quake hit the Santa Cruz Islands on Monday (#6/5) Table 1. Northern & Central California Seismicity (M>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 AUG 18 709 7.29 37 35.79 118 42.79 6.76 27 1 .12 .3 .9 CAS 1.3 94 AUG 18 926 43.62 36 7.12 120 8.32 8.72 38 .16 .4 .6 COA 2.7 94 AUG 18 1209 45.08 36 8.06 120 11.87 10.72 29 1 .12 .5 .9 COA 2.4 94 AUG 18 1331 39.81 38 24.50 122 11.50 3.12 14 2 .25 .7 2.4 GVL 1.4 94 AUG 18 1451 38.14 38 49.62 122 49.75 2.52 7 .03 .4 .7 GEY 1.3 94 AUG 18 2022 30.18 37 29.57 118 50.42 10.33 17 3 .08 .4 .8 MOR 1.3 94 AUG 18 2045 7.91 36 31.62 121 2.75 7.82 8 .04 1.5 1.6 BIT 3.3 94 AUG 18 2045 44.73 36 40.77 118 3.91 10.19 35 1 .15 .5 1.5 OWV 2.8 94 AUG 18 2050 6.59 36 58.29 121 46.85 6.15 32 1 .10 .3 .5 LOM 1.6 94 AUG 18 2050 24.88 36 58.31 121 46.82 6.62 54 1 .10 .2 .4 LOM 2.1 94 AUG 18 2224 46.58 36 36.03 121 6.08 8.93 9 .05 .5 1.9 BVL 2.6 94 AUG 18 2313 27.89 37 35.09 118 51.90 7.96 14 1 .07 .7 1.4 MOR 1.1 94 AUG 19 124 43.90 40 18.23 124 32.66 14.85 13 1 .10 1.6 .4 MEN 1.8 94 AUG 19 131 3.82 40 21.13 125 7.65 24.04 14 1 .19 2.716.7 MEN - 2.9 94 AUG 19 137 4.23 37 39.18 118 51.01 6.08 41 2 .12 .3 .4 HCF 2.5 94 AUG 19 140 47.18 37 39.34 118 50.56 5.83 23 .11 .3 .5 HCF 1.4 94 AUG 19 140 58.28 37 39.60 118 50.05 6.07 17 1 .07 .3 .4 HCF 1.3 94 AUG 19 207 45.30 38 47.88 122 45.00 0.06 7 .07 .4 1.5 GEY * 1.2 94 AUG 19 523 51.84 38 23.96 122 11.99 3.28 19 .29 .7 3.1 GVL 1.4 94 AUG 19 715 3.47 37 12.10 121 39.10 1.97 16 .08 .3 1.0 SFL- 1.0 94 AUG 19 725 16.97 38 41.31 123 32.33 4.13 45 1 .16 .7 1.1 PAR 2.7 94 AUG 19 729 17.13 35 31.76 118 14.53 10.05 9 1 .09 .5 1.4 WWF 1.6 94 AUG 19 734 32.36 38 42.01 123 31.84 1.95 19 1 .12 .9 3.9 PAR 1.9 94 AUG 19 814 49.48 37 39.17 118 50.96 5.91 41 3 .12 .3 .4 HCF 2.1 94 AUG 19 908 2.34 41 2.63 121 57.87 18.76 17 1 .10 .5 1.5 SHA 1.8 94 AUG 19 912 47.22 41 2.79 121 57.50 17.00 31 2 .16 .4 1.4 SHA 2.4 94 AUG 19 934 33.32 36 14.85 120 19.31 11.86 7 .05 1.2 .7 COA 1.0 94 AUG 19 952 28.01 37 39.38 118 50.60 3.96 10 .11 .5 1.0 HCF 1.2 94 AUG 19 1045 42.50 38 42.21 123 31.64 1.83 15 1 .14 1.3 5.8 PAR- 1.6 94 AUG 19 1057 25.09 36 36.62 121 5.77 11.04 39 4 .15 .3 .7 BVL 1.8 94 AUG 19 1108 16.71 38 47.76 122 46.48 0.89 7 .07 .4 1.0 GEY 1.1 94 AUG 19 1139 20.05 38 42.17 123 31.65 1.63 14 2 .15 1.3 5.3 PAR 1.8 94 AUG 19 1658 23.69 38 42.28 123 31.85 0.88 10 .06 1.5 8.0 PAR- 1.7 94 AUG 19 1738 0.94 36 36.58 121 5.94 10.73 32 5 .13 .3 .7 BVL 1.6 94 AUG 19 1803 55.17 38 45.25 122 42.54 2.64 10 1 .04 .3 .5 NAP 1.3 94 AUG 19 1845 57.43 36 32.12 121 5.11 7.94 23 2 .05 .2 .6 BVL 1.6 94 AUG 19 1919 8.69 37 39.09 118 56.88 3.98 12 .07 .3 .7 SMO 1.1 94 AUG 19 1944 8.56 35 58.26 120 31.37 5.31 9 1 .04 .6 1.0 MID 1.0 94 AUG 19 2110 7.64 37 39.12 118 57.44 4.99 26 4 .07 .3 .4 SMO 1.4 94 AUG 19 2242 5.88 38 41.27 123 32.39 4.56 55 .18 .6 .8 PAR 2.9 94 AUG 19 2357 38.70 38 48.07 122 46.18 1.09 10 .03 .3 .5 GEY 1.5 94 AUG 20 439 33.78 40 37.13 123 58.07 25.94 13 2 .10 .6 1.2 EUR 1.6 94 AUG 20 458 27.23 36 43.51 121 23.01 10.39 7 .04 .9 1.8 STN 1.9 94 AUG 20 503 23.31 36 34.61 121 5.11 6.98 23 .10 .3 .8 BVL 1.4 --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 AUG 20 605 18.10 37 39.04 118 53.30 1.96 19 3 .06 .2 .2 DOM 1.8 94 AUG 20 625 44.56 37 38.98 118 53.29 1.33 9 .07 .3 .3 SMO 1.4 94 AUG 20 631 17.44 37 38.97 118 53.22 1.76 17 2 .06 .2 .2 SMO 1.7 94 AUG 20 632 7.67 37 39.08 118 53.12 1.79 9 .03 .3 .3 DOM 1.5 94 AUG 20 640 24.75 37 21.71 121 44.15 2.09 25 .06 .2 .4 ALU 1.3 94 AUG 20 748 44.27 40 45.41 123 38.43 34.43 12 2 .07 .6 1.2 EUR 2.0 94 AUG 20 815 19.81 39 27.76 122 0.96 20.06 8 .05 2.1 1.3 SAC 2.0 94 AUG 20 851 51.87 37 38.58 118 49.47 8.10 13 .10 .5 1.0 HCF 1.4 94 AUG 20 947 24.79 35 39.84 118 24.61 9.00 22 2 .14 .3 .8 WWF 2.4 94 AUG 20 1000 59.17 37 10.09 119 49.56 20.33 9 2 .24 1.4 1.4 KAI 1.8 94 AUG 20 1005 23.01 38 49.53 122 48.38 1.04 9 .03 .3 .6 GEY 1.2 94 AUG 20 1005 48.41 38 49.50 122 48.33 1.29 14 .07 .3 .5 GEY 1.5 94 AUG 20 1113 57.27 37 38.87 118 53.55 0.94 8 .08 .4 .3 SMO 1.2 94 AUG 20 1151 27.40 35 39.73 118 24.59 9.16 14 1 .14 .5 1.2 WWF 1.8 94 AUG 20 1200 23.00 38 48.82 122 46.37 0.34 9 .04 .3 .9 GEY 1.3 94 AUG 20 1204 51.47 36 52.56 122 9.07 5.91 21 2 .10 .7 1.4 MON 1.6 94 AUG 20 1228 6.55 40 47.29 124 59.45 25.02 20 1 .13 2.512.8 DEL-- 3.1 94 AUG 20 1254 46.40 36 10.94 120 44.57 1.26 17 .12 .5 2.9 BIT 1.6 94 AUG 20 1344 49.11 38 42.26 123 31.88 2.33 14 1 .14 1.2 5.1 PAR * 1.5 94 AUG 20 1355 12.53 38 49.83 122 47.60 4.38 9 .11 .5 1.3 GEY 1.2 94 AUG 20 1526 24.26 37 14.92 121 38.03 3.08 17 .05 .3 .6 SFL 1.2 94 AUG 20 1542 45.52 40 32.31 122 16.57 19.92 8 1 .12 1.4 2.1 SHA 1.4 94 AUG 20 1548 3.70 37 31.97 118 49.86 11.10 13 .09 .8 .9 MOR 1.1 94 AUG 20 1719 39.28 38 49.18 122 47.64 0.53 25 1 .13 .2 .5 GEY 1.9 94 AUG 20 1807 50.65 38 50.22 122 48.56 1.91 14 .05 .3 .7 GEY 1.8 94 AUG 20 1843 35.64 37 33.93 118 48.80 7.48 12 2 .07 .8 .6 MOR .9 94 AUG 20 1843 41.75 38 48.39 122 45.20 0.01 9 .09 .3 1.3 GEY * 1.1 94 AUG 20 1915 47.31 40 17.57 124 34.21 22.54 9 1 .04 1.6 .8 MEN 1.7 94 AUG 20 1917 49.33 36 45.15 121 22.24 6.71 59 3 .17 .2 .5 HOL 2.1 94 AUG 20 1937 8.18 36 45.23 121 22.09 6.27 31 .16 .3 .6 HOL 1.7 94 AUG 20 2045 18.58 38 31.84 122 26.47 8.90 35 2 .19 .3 1.0 GVL 1.9 94 AUG 20 2103 49.17 37 34.34 118 49.75 5.38 13 3 .17 1.0 .6 MOR 1.0 94 AUG 20 2354 45.64 37 32.31 118 51.80 9.77 24 .11 .4 .8 MOR 1.4 94 AUG 21 53 33.99 38 46.06 122 42.30 0.56 9 1 .10 .3 .9 GEY 1.2 94 AUG 21 131 10.22 37 35.17 118 49.00 6.55 17 .10 .5 .7 MOR 1.3 94 AUG 21 256 8.15 37 19.73 122 13.80 6.60 16 1 .08 .3 .6 BLM 1.1 94 AUG 21 259 42.18 37 57.76 122 1.88 12.78 92 4 .22 .3 .4 CON 2.3 94 AUG 21 306 29.82 35 46.48 120 2.22 11.34 13 .12 1.4 1.8 COA 1.6 94 AUG 21 604 16.91 38 31.94 122 25.84 7.02 14 1 .15 .4 1.9 GVL 1.1 94 AUG 21 615 55.65 37 7.52 118 25.85 17.06 8 .05 1.8 1.9 KAI 1.5 94 AUG 21 803 31.44 37 32.34 118 51.29 11.74 17 .09 .6 .9 MOR 1.2 94 AUG 21 847 48.82 40 24.04 122 0.43 21.05 31 1 .19 .5 1.1 SHA 2.4 94 AUG 21 1033 40.73 38 48.74 122 48.22 3.48 9 .08 .4 .8 GEY 1.2 94 AUG 21 1102 19.66 41 8.88 122 0.14 14.79 10 1 .12 .8 1.8 SHA 1.3 94 AUG 21 1237 16.62 37 31.65 118 57.95 18.22 29 .11 .4 .7 SIL 1.9 --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 AUG 21 1237 46.86 37 31.35 118 57.54 15.82 14 .15 1.1 2.3 SIL 1.4 94 AUG 21 1352 13.20 40 32.74 122 16.45 19.34 8 1 .09 1.3 1.8 SHA 1.4 94 AUG 21 1555 30.81 40 31.47 124 15.25 9.89 18 2 .11 .4 .5 EUR 1.5 94 AUG 21 1602 7.94 39 19.17 123 15.30 7.61 13 1 .06 .3 1.1 MAA- 1.4 94 AUG 21 1850 15.63 38 45.09 122 41.77 0.02 7 .08 .4 1.4 NAP * 1.3 94 AUG 21 1910 4.91 36 39.15 121 16.99 7.61 12 .05 .4 1.1 STN .8 94 AUG 21 2121 36.15 37 10.03 121 33.50 5.53 11 .02 .4 .8 CYN 1.1 94 AUG 21 2135 1.29 36 35.57 121 11.62 4.30 14 .10 .4 .6 PIN 1.3 94 AUG 21 2219 13.19 36 0.70 120 33.63 5.46 12 3 .08 .4 .8 SLA- 1.1 94 AUG 21 2318 22.29 37 27.01 118 35.74 14.06 15 2 .08 .4 1.3 RVL 1.2 94 AUG 22 49 16.99 36 0.77 120 33.28 5.67 10 2 .05 .4 1.0 SLA 1.1 94 AUG 22 205 8.56 37 21.92 121 42.91 3.21 29 4 .06 .2 .4 ALU 1.2 94 AUG 22 424 29.56 37 38.73 118 49.69 9.48 16 2 .13 .7 .8 HCF 1.1 94 AUG 22 450 3.89 38 47.53 122 44.92 0.20 9 .07 .3 1.1 GEY 1.3 94 AUG 22 635 10.77 38 47.61 122 43.41 2.73 30 2 .15 .2 .6 GEY 2.1 94 AUG 22 659 30.42 36 59.06 121 27.38 5.88 45 1 .09 .2 .5 CYS 1.2 94 AUG 22 817 33.73 39 21.59 122 52.40 7.71 29 2 .10 .2 1.1 BAR 1.8 94 AUG 22 928 31.05 37 39.23 118 54.77 5.44 9 .07 .6 1.1 DOM 1.0 94 AUG 22 1042 17.73 39 38.20 123 25.94 8.94 10 .05 .5 .6 MAA 1.3 94 AUG 22 1504 53.33 36 56.90 121 40.52 6.50 82 1 .16 .2 .4 SJB 2.4 94 AUG 22 1754 22.26 38 45.04 122 43.32 2.45 31 .13 .2 .5 GEY 2.3 94 AUG 22 2127 37.67 37 40.39 118 49.77 3.33 8 .07 1.0 1.9 HCF 1.2 94 AUG 22 2134 57.45 37 40.01 118 50.12 2.80 15 .12 .4 .8 HCF 1.4 94 AUG 22 2215 14.32 40 32.89 122 13.95 18.31 10 2 .20 1.0 2.9 SHA 1.7 94 AUG 23 13 41.10 36 16.90 120 21.13 11.23 16 1 .07 .8 .5 COA 1.6 94 AUG 23 49 3.80 39 4.03 122 32.95 0.07 10 1 .20 .5 2.1 BAR * 1.3 94 AUG 23 314 51.37 37 39.03 118 49.93 6.34 10 .05 .4 .9 HCF 1.1 94 AUG 23 324 12.77 37 32.07 118 47.26 7.32 39 3 .10 .3 .6 MOR 2.5 94 AUG 23 504 10.59 36 34.06 121 9.60 3.23 12 .04 .3 .5 PIN .9 94 AUG 23 602 16.74 38 49.15 122 48.76 2.03 18 .08 .2 .6 GEY 1.8 94 AUG 23 602 48.66 38 49.24 122 48.97 2.24 8 .04 .3 .6 GEY 1.1 94 AUG 23 645 28.78 37 38.58 118 55.79 5.01 16 .12 .4 .7 SMO 1.4 94 AUG 23 652 8.18 37 39.03 118 49.83 6.15 10 .09 .5 1.0 HCF 1.0 94 AUG 23 727 30.89 37 31.66 118 45.58 9.51 8 .03 2.3 1.7 WCN .9 94 AUG 23 733 9.14 36 55.45 121 25.87 2.60 24 .10 .3 1.2 HOL- 1.1 94 AUG 23 733 17.28 38 49.96 122 48.44 0.87 9 .05 .3 .8 GEY 1.1 94 AUG 23 855 54.68 36 17.15 120 19.94 12.50 26 2 .08 .3 .3 COA 1.8 94 AUG 23 1210 40.97 37 28.41 118 48.17 8.64 16 .06 .4 1.1 MOR 1.0 94 AUG 23 1235 5.11 37 36.17 118 52.33 2.77 8 .05 .4 .4 SHE 1.2 94 AUG 23 1323 59.06 37 39.14 121 52.63 8.54 13 .09 .3 1.0 DAN .9 94 AUG 23 1447 42.01 38 50.26 122 49.49 1.46 12 .06 .3 .9 GEY 1.3 94 AUG 23 1529 35.00 38 45.62 122 42.94 2.56 9 .04 .3 .5 GEY 1.3 94 AUG 23 1531 17.46 38 45.66 122 42.97 2.71 8 .03 .3 .7 GEY 1.2 94 AUG 23 1711 21.48 37 28.54 118 33.01 13.71 36 4 .09 .3 1.0 RVL 2.7 94 AUG 23 1800 52.91 40 24.55 124 25.59 10.06 12 1 .06 .8 .4 MEN- 1.7 --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 AUG 23 1826 35.40 36 42.99 121 21.70 3.81 17 1 .05 .3 .4 STN 1.3 94 AUG 23 1939 19.11 38 48.40 122 48.50 3.42 9 .02 .3 .6 GEY 1.3 94 AUG 23 2049 24.65 39 24.13 123 15.95 7.90 14 1 .07 .3 .7 MAA 1.4 94 AUG 23 2143 1.11 36 2.62 120 34.81 3.54 10 3 .06 .6 .9 SLA 1.3 94 AUG 23 2354 6.35 37 7.65 121 58.93 14.44 17 3 .18 .8 1.1 LOM 1.3 94 AUG 24 1 37.96 39 29.84 122 56.57 10.42 27 1 .14 .3 1.2 BAR 2.0 94 AUG 24 18 17.77 37 33.52 118 26.40 6.00 8 1 .04 .6 .4 CHV 1.1 94 AUG 24 18 45.39 37 33.84 118 25.96 4.71 8 2 .11 .4 .6 CHV 1.2 94 AUG 24 30 45.43 38 45.45 122 43.64 2.30 22 .08 .2 .4 GEY 2.1 94 AUG 24 104 14.46 38 57.50 122 46.79 4.14 8 1 .15 .7 .9 KON 1.0 94 AUG 24 136 35.04 38 48.17 122 47.01 0.67 24 1 .15 .3 .6 GEY 1.7 94 AUG 24 230 10.89 38 50.24 122 49.21 3.87 28 .08 .2 .7 GEY 2.2 94 AUG 24 239 27.61 36 36.76 121 12.98 6.38 51 2 .07 .2 .5 PIN 2.2 94 AUG 24 333 55.95 38 47.50 122 44.05 2.98 70 3 .15 .2 .4 GEY 2.9 94 AUG 24 336 7.40 38 47.72 122 44.41 1.74 8 .05 .4 .9 GEY 1.3 94 AUG 24 337 23.18 38 1.95 118 43.60 7.46 35 2 .10 .9 4.0 MOL 2.3 94 AUG 24 346 30.72 38 42.23 123 31.99 2.62 19 2 .12 1.0 2.5 PAR 2.0 94 AUG 24 547 11.68 38 50.28 122 47.83 1.02 9 .07 .3 1.1 GEY 1.2 94 AUG 24 551 30.89 37 40.40 118 56.61 1.62 16 .06 .3 .2 SMO 1.4 94 AUG 24 617 9.04 38 41.88 123 32.21 1.61 18 2 .09 .9 3.4 PAR 1.9 94 AUG 24 723 33.45 38 47.47 122 45.09 1.24 8 .04 .3 .7 GEY 1.3 94 AUG 24 723 44.13 38 47.45 122 45.08 1.27 8 .04 .3 .7 GEY 1.3 94 AUG 24 1047 42.87 39 43.46 123 29.87 10.33 12 1 .08 .4 .6 MAA 1.0 94 AUG 24 1047 46.86 39 4.11 122 33.27 0.00 13 .24 .5 2.7 BAR * 1.4 94 AUG 24 1125 5.31 40 23.73 124 30.82 26.60 18 1 .10 1.1 .7 MEN 2.2 94 AUG 24 1351 18.06 38 47.70 122 46.14 1.66 17 .08 .2 .6 GEY 1.5 94 AUG 24 1415 55.06 39 5.23 121 2.39 12.08 14 3 .11 .4 1.2 AUB 1.8 94 AUG 24 1554 25.54 40 47.84 121 54.82 15.60 7 1 .05 1.2 .6 SHA 1.1 94 AUG 24 1630 19.69 36 7.96 120 9.90 11.00 18 .26 1.0 1.7 COA 2.0 94 AUG 24 2114 32.52 38 47.41 122 44.42 1.93 12 .08 .3 .7 GEY 1.7 94 AUG 24 2123 57.21 35 46.99 118 2.46 9.51 9 .05 .6 1.5 WWF 1.4 94 AUG 24 2147 27.61 39 43.84 123 30.17 10.84 18 .11 .4 .6 MAA 2.1 94 AUG 24 2157 20.58 38 47.49 122 47.09 0.44 8 .04 .3 .7 GEY 1.2 94 AUG 24 2237 32.41 36 5.41 120 26.95 6.43 42 .19 .3 .7 COA 2.4 94 AUG 24 2318 16.12 38 48.52 122 46.12 1.66 9 .13 .4 .9 GEY 1.2 94 AUG 25 129 55.45 38 47.12 122 46.34 3.16 10 .03 .3 .8 GEY 1.4 94 AUG 25 147 27.05 35 43.44 118 3.66 6.75 7 .04 .5 3.7 WWF 1.4 94 AUG 25 218 6.69 38 49.00 122 50.25 2.68 9 .02 .3 .8 GEY 1.1 94 AUG 25 310 46.42 37 34.72 118 59.15 1.96 7 .15 1.5 2.2 SIL 1.0 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 15 055643.9* 44.201N 150.328E 33N 4.6 1.0 14 EAST OF KURIL ISLANDS 090429.8% 35.488N 3.806W 10G 0.8 9 STRAIT OF GIBRALTAR. mbLg 3.3 093445.8? 15.87 N 98.51 W 33N 4.2 0.8 16 OFF COAST OF GUERRERO, MEXICO 105853.0* 17.686S 167.805E 33N 5.1 1.2 20 VANUATU ISLANDS 151308.7 41.972N 142.514E 71 4.5 1.2 29 HOKKAIDO, JAPAN REGION. Felt (III JMA) at Urakawa and (II JMA) at Hiroo. 210118.5% 33.785S 70.624W 90G 0.2 7 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN). AUG 16 000258.1? 53.02 N 160.37 W 33N 4.4 0.9 9 SOUTH OF ALASKA 023831.5* 24.069S 66.751W 188* 4.6 1.0 39 SALTA PROVINCE, ARGENTINA 025231.9% 34.088S 71.295W 60G 0.2 8 NEAR COAST OF CEN CHILE. MD 3.6 034356.8 44.516N 149.892E 33N 5.0 0.9 72 KURIL ISLANDS 034656.4* 44.534N 149.984E 33N 4.5 1.0 26 KURIL ISLANDS 040300.1 61.000N 150.078W 47* 0.9 62 SOUTHERN ALASKA. ML 2.6 (AEIC), 044618.4 29.358N 130.235E 33N 5.4 5.1 1.1 98 RYUKYU ISLANDS 060350.5& 38.034N 118.732W 3 24 CALIFORNIA-NEVADA BORDER REGION. . MD 2.8 (GM). 071648.7* 24.900S 179.791E 500G 4.6 0.8 35 SOUTH OF FIJI ISLANDS 101738.2* 37.865N 142.616E 33N 0.8 19 OFF EAST COAST OF HONSHU, JAPAN 113303.6 20.520S 167.925E 33N 5.2 0.6 23 LOYALTY ISLANDS 115658.9? 44.12 N 150.51 E 33N 1.7 9 EAST OF KURIL ISLANDS 125703.0% 34.074S 71.433W 33N 0.3 7 NEAR COAST OF CEN CHILE. MD 3.4 141500.6* 18.306S 176.762W 200G 4.5 1.1 28 FIJI ISLANDS REGION 211546.5 14.331N 92.656W 33N 4.9 1.1 58 NEAR COAST OF CHIAPAS, MEXICO 214354.8 19.916S 175.385W 200G 4.7 0.7 56 TONGA ISLANDS AUG 17 032032.9& 60.870N 149.770W 36 58 KENAI PENINSULA, ALASKA. ML 2.6 061037.2% 34.092S 71.095W 70G 0.2 7 NEAR COAST OF CEN CHILE. MD 3.4 065649.7 47.479N 115.897W 1G 0.5 49 MONTANA. ML 3.6 (GS), 4.1 (BUT). Rockburst at the Lucky Friday Mine near Mullan, Idaho. 073307.6? 51.31 N 179.79 W 33N 4.4 0.6 10 ANDREANOF ISLANDS, ALEUTIAN IS. 074918.4? 34.65 S 70.84 W 100G 0.1 7 CHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN). 164546.0* 50.898N 179.353W 33N 4.5 1.5 40 ANDREANOF ISLANDS, ALEUTIAN IS. 223150.8* 4.679S 103.244E 102? 5.2 0.7 20 SOUTHERN SUMATERA, INDONESIA 230104.5% 33.544S 71.136W 57? 1.0 7 NEAR COAST OF CEN CHILE. MD 3.2 AUG 18 004544.1 7.598S 31.725E 10G 5.9 1.1 53 LAKE TANGANYIKA REGION. Mw 6.1 011306.6 35.579N 0.201W 9G 5.4 6.0 1.1 146 NORTHERN ALGERIA. Mw 5.8 (HRV). At least 159 people were killed, 289 injured, 8,000 to 10,000 left homeless and thousands of houses destroyed in Mascara Province. 014248.0 35.428N 0.143W 10G 4.4 1.4 42 NORTHERN ALGERIA 015824.8* 35.524N 0.155W 23 3.1 1.0 14 NORTHERN ALGERIA. mbLg 3.6 022344.9* 35.417N 0.094W 10G 3.7 1.1 22 NORTHERN ALGERIA. mbLg 3.8 032031.8% 33.706S 70.195W 10G 1.3 6 CHILE-ARGENTINA BORDER REGION 032143.7? 43.94 N 150.54 E 33N 4.0 1.3 7 EAST OF KURIL ISLANDS 034116.5? 44.34 N 150.18 E 33N 4.4 0.5 7 EAST OF KURIL ISLANDS 041304.8* 7.964S 107.848E 33N 4.7 1.2 18 JAWA, INDONESIA. Felt (IV) at Bandung and Cilacap; (II) at Jakarta. 042150.8 44.478N 150.159E 33N 5.5 1.1 143 EAST OF KURIL ISLANDS 044259.1 44.534N 150.175E 33N 5.9 6.4 1.1 267 EAST OF KURIL ISLANDS. Mw 6.6 044521.1? 44.53 N 150.38 E 33N 1.1 19 EAST OF KURIL ISLANDS 045634.2* 44.623N 150.017E 33N 4.8 1.4 21 EAST OF KURIL ISLANDS 050053.9? 35.50 N 0.11 W 10G 0.9 16 NORTHERN ALGERIA. mbLg 3.5 051141.1? 44.16 N 150.48 E 33N 4.1 1.1 9 EAST OF KURIL ISLANDS 051530.4* 44.137N 150.746E 33N 4.5 0.9 11 EAST OF KURIL ISLANDS 052145.7* 44.911N 150.243E 33N 4.7 1.1 16 EAST OF KURIL ISLANDS 052825.7* 44.088N 150.286E 33N 4.2 1.1 14 EAST OF KURIL ISLANDS 054252.2* 44.299N 150.162E 33N 4.5 0.8 9 EAST OF KURIL ISLANDS 054515.9* 44.409N 150.420E 33N 4.7 1.4 22 EAST OF KURIL ISLANDS 055039.5 44.431N 150.044E 33N 4.8 1.2 33 EAST OF KURIL ISLANDS 081817.8 35.477N 0.141W 10G 3.2 0.9 19 NORTHERN ALGERIA. mbLg 3.2 093703.3* 35.368N 0.064W 10G 3.8 0.9 25 NORTHERN ALGERIA. mbLg 3.6 100619.8 44.408N 150.020E 33N 4.7 3.9 1.0 46 EAST OF KURIL ISLANDS 103721.2* 46.895N 152.057E 33N 4.5 1.1 12 KURIL ISLANDS 125926.7? 33.79 S 71.77 W 33N 0.7 7 NEAR COAST OF CEN CHILE. MD 3.4 150325.1? 33.08 S 70.36 W 110G 0.4 7 CHILE-ARGENTINA BORDER REGION. MD 3.5 (SAN). 184739.6? 33.20 S 71.50 W 33N 0.4 8 NEAR COAST OF CEN CHILE. MD 3.8 215201.6% 33.168S 70.301W 10G 0.2 7 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN). AUG 19 003749.7& 63.130N 150.310W 110 65 CENTRAL ALASKA. . 044119.7 34.207N 118.641W 5G 0.9 56 SOUTHERN CALIFORNIA. ML 3.1 045942.0% 32.230S 71.443W 33N 0.4 9 NEAR COAST OF CEN CHILE. MD 3.9 064057.2 44.423N 150.193E 33N 4.9 1.1 43 EAST OF KURIL ISLANDS 065608.1 34.207N 118.779W 10G 0.8 42 SOUTHERN CALIFORNIA. ML 3.6 100253.1 26.312S 63.268W 565D 6.6 0.8 156 SANTIAGO DEL ESTERO PROV., ARG. 110730.5& 62.730N 150.520W 90 81 CENTRAL ALASKA. . 160003.4% 33.671S 70.963W 70G 0.5 8 CHILE-ARGENTINA BORDER REGION. MD 3.4 (SAN). 163900.2 34.236N 118.460W 5G 0.7 27 SOUTHERN CALIFORNIA. ML 3.0 172510.3& 62.910N 150.700W 112 60 CENTRAL ALASKA. . 210245.0 17.906N 96.397E 10G 5.5 5.7 1.0 40 MYANMAR. Mw 6.0 (GS), 5.8 (HRV). AUG 20 022111.6 44.285N 149.511E 33N 5.5 5.0 0.9 99 KURIL ISLANDS 043851.5 44.673N 149.099E 33N 5.7 5.9 0.9 104 KURIL ISLANDS. Mw 6.2 (GS). 064649.3* 44.090N 149.584E 33N 4.6 0.8 18 KURIL ISLANDS 104544.3 36.123N 91.075W 5G 0.5 12 MISSOURI-ARKANSAS BORDER REGION. mbLg 3.5 (GS). Felt in the Walnut Ridge, Arkansas area. 121710.3 44.107N 150.372E 33N 4.7 0.9 18 EAST OF KURIL ISLANDS 125418.0 51.697N 178.805W 33N 4.5 0.9 39 ANDREANOF ISLANDS, ALEUTIAN IS. 134637.2 42.696N 111.021W 10G 0.6 14 EASTERN IDAHO. ML 3.2 (GS). 145218.7? 34.80 S 71.20 W 70G 0.2 8 NEAR COAST OF CEN CHILE. MD 4.0 181827.5 3.138N 127.391E 94* 5.1 1.4 40 TALAUD ISLANDS, INDONESIA 191156.0 52.282N 160.502E 33N 4.7 4.4 0.9 30 OFF EAST COAST OF KAMCHATKA 200844.0 52.311N 160.531E 33N 4.7 1.0 28 OFF EAST COAST OF KAMCHATKA 202253.4 33.320N 116.351W 10G 0.8 10 SOUTHERN CALIFORNIA. ML 3.1 AUG 21 091547.6* 6.518S 143.555E 33N 5.1 0.9 20 NEW GUINEA, PAPUA NEW GUINEA 112641.8? 33.17 S 70.21 W 110G 0.4 7 CHILE-ARGENTINA BORDER REGION. MD 3.6 (SAN). 125239.2 34.569N 116.590W 5G 0.7 20 SOUTHERN CALIFORNIA. ML 3.3 130508.3 50.743N 129.765W 10G 4.3 1.1 89 VANCOUVER ISLAND REGION 155601.3 56.588N 117.743E 33N 5.9 5.8 0.9 193 EAST OF LAKE BAYKAL, RUSSIA. Mw 231958.9* 51.918N 160.702E 33N 4.6 0.9 12 OFF EAST COAST OF KAMCHATKA 234831.1* 52.025N 160.712E 33N 4.6 0.7 11 OFF EAST COAST OF KAMCHATKA AUG 22 010034.3* 51.264N 179.181W 33N 4.5 1.1 27 ANDREANOF ISLANDS, ALEUTIAN IS. 073321.8% 34.213S 71.109W 60G 0.4 6 NEAR COAST OF CENTRAL CHILE. MD 3.4 (SAN). 093301.7* 17.972S 168.785E 100G 4.8 1.0 36 VANUATU ISLANDS 103514.0% 33.612S 70.338W 10G 0.7 6 CHILE-ARGENTINA BORDER REGION. MD 3.3 (SAN). 124116.4 71.143N 5.388W 10G 5.3 4.9 1.3 69 JAN MAYEN ISLAND REGION 153450.5 31.680N 116.019W 5G 0.5 25 BAJA CALIFORNIA, MEXICO. ML 3.5 172638.1 11.458S 166.328E 147D 5.9 0.7 75 SANTA CRUZ ISLANDS. Mw 6.4 (GS), 202715.8 34.223N 118.647W 5G 1.3 29 SOUTHERN CALIFORNIA. ML 2.8 AUG 23 050309.7? 38.85 N 106.96 W 5G 0.9 6 COLORADO. ML 2.2 (GS). Felt at Gothic. 062207.6* 22.888S 179.702E 522D 4.7 0.9 45 SOUTH OF FIJI ISLANDS 143352.8 59.214N 152.381W 72 4.7 0.9 46 SOUTHERN ALASKA. Felt lightly at Homer. AUG 24 151740 Q 25.1 S 13.5 W 10G 5.6 0.7 21 SOUTHERN MID-ATLANTIC RIDGE Option: 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.