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 July 7 - 13, 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 Activity was moderate during the past week. For the seven-day period ending at midnight on Wednesday, July 13, 1994 the U.S. Geological Survey office in Menlo Park recorded 21 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Of these, three were as large as M2.0. This total compares to just 13 earthquakes during the previous seven-day period (June 30 - July 6), only one of which was as large as M2. More than half the earthquakes in the Bay Area occurred on the San Andreas fault, mostly along the creeping segment. Of the three M2 events, two occurred along this segment. The first of these was a M2.6 Wednesday morning that was located about nine miles southeast of San Juan Bautista (#3 in figure 1). Later that afternoon, a M2.3 occurred about six miles northwest of San Juan Bautista (#4/1). Other events along the San Andreas consisted of several M1's along the Loma Prieta segment and a M1.2 on the northern Peninsula segment just southeast of Pacifica (#1/1). The Calaveras fault was completely quiet above the M1 level with the exception of a small cluster of M1's beneath eastern San Jose. The only earthquake of note in the East Bay was a M2.4 along the Antioch fault six miles northwest of Antioch (#2/1). A pair of M1's occurred about eight miles east of Livermore and a M1.1 occurred on the central Hayward fault about three miles northeast of San Leandro. Northern & Central California The region was comparatively quiet during the past week with only one earthquake as large as M3. This is in contrast to the previous week when six M3's occurred in five separate areas. The total number of M2 earthquakes was also down, dropping to 27 from 38 during the previous week. The sole M3 event was a M3.1 Wednesday afternoon that occurred about five miles east of Truckee (#3/2). Although no felt reports were received, it is likely that this earthquake was felt locally. Other events in this part of the northern Sierra Nevada include a M2.2 last Saturday morning about two miles northwest of Truckee (#3/2) and a M2.6 on Monday about six miles southeast of Quincy (#7/2). Seismicity in the Cape Mendocino area was limited to four M2's spread out along the Mendocino Fracture zone west of Petrolia (#4/2) and one M2.6 in the Gorda Plate about 60 miles southwest of Crescent City (#1/2). The Coast Range faults experienced only two events as large as M2: a M2.5 on the northern Rogers Creek fault about four miles southeast of Healdsburg (#6/2) and a M2.1 on the Bartlett Strings fault north of Clear Lake (#8/2). Several M2 earthquakes occurred in the Geysers geothermal area, the largest a M2.5 late Tuesday morning. Central California was equally quiet with two M2 earthquakes on the creeping segment of the San Andreas (#5/2) and one M2.5 on the Coalinga thrust fault about eight miles northeast of Coalinga (#2/2). Long Valley Caldera There was a small swarm in the caldera that began Sunday morning and generated over 60 small events before ending early that afternoon. Only two of these earthquakes were as large as M2 (#3/3) and none were reported to have been felt locally. The activity was centered about six kilometers beneath the western side of the resurgent dome, an area that has seen only occasional events as large as M2, most recently in early March of this year when a pair of M2 events occurred here. A smaller cluster of events occurred the following day beneath the east side of the resurgent dome (#4/3). Activity south of the caldera was limited to a M2.6 east of Convict Lake (#2/3) and a M2.0 in the Chalfant Valley area (#1/3). USA Seismicity (July 4 - 14) According to data provided by the National Earthquake Information Center, other notable domestic earthquakes during the past week occurred in Idaho and southern California. Residents of Challis, Idaho reported feeling a M3.6 Tuesday afternoon (#5/4), an aftershock to a pair of M4's that rocked the area in early June. Similarly, several aftershocks in the Northridge, CA area were felt locally (#2/4), as were several M3 events that occurred along the Landers aftershock zone (#3/4). South of the border, a M4.0 and a M3.6 occurred near the head of the Gulf of California (#1,#4/4). The Planet Earth (July 4 - 14) The largest earthquake on the planet during the past week was a Ms7.3 Wednesday beneath the northern Vanuatu Islands (#3/5). Although the quake was strongly felt about 100 miles south at Port Villa, no reports were received of significant damage or injury. A strong earthquake also occurred Wednesday beneath the Banda Sea in central Indonesia (#4/5). The focal depth of the earthquake was nearly 200 kilometers and consequently there was little damage reported. Other events of interest include a Ms5.0 off the northern Dominican Republic region that was strongly felt in towns along the north coast (#2/5) and a Mb5.0 beneath central Equador that was felt at Ambato, Latacunga, and Quito (#1/5). 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 JUL 7 740 52.27 40 33.52 123 32.56 10.43 9 .15 1.7 .6 EUR .6 94 JUL 7 756 37.46 40 33.61 123 32.07 10.52 11 .15 .7 .4 EUR 1.2 94 JUL 7 816 43.49 40 33.88 123 32.57 10.46 10 .21 1.8 .6 EUR .8 94 JUL 7 818 15.05 40 32.82 123 31.43 10.88 15 .28 1.0 .8 EUR- 1.8 94 JUL 7 849 23.59 36 18.38 121 40.70 9.68 19 1 .10 .4 1.1 SUR 1.2 94 JUL 7 941 11.48 40 33.22 123 31.53 10.32 9 .20 1.1 .6 EUR 1.0 94 JUL 7 956 12.13 37 37.35 122 27.55 7.44 20 1 .17 .6 .7 SFP 1.1 94 JUL 7 1018 29.80 38 39.99 122 24.45 6.92 15 .21 .6 1.2 GVL 1.5 94 JUL 7 1020 45.63 38 39.86 122 23.81 7.40 15 .23 .6 1.3 GVL 1.2 94 JUL 7 1020 57.27 36 43.00 121 12.00 8.58 34 1 .15 .3 .7 PAI 1.7 94 JUL 7 1113 59.33 38 49.70 122 47.73 2.23 7 .01 .3 1.1 GEY 1.0 94 JUL 7 1216 14.92 37 36.50 118 48.44 3.09 13 .06 .3 1.8 HCF 1.1 94 JUL 7 1839 32.02 37 38.75 118 55.39 8.22 18 1 .06 .4 .6 SMO 1.6 94 JUL 7 1945 30.75 36 27.73 121 1.47 5.80 23 1 .09 .3 .7 BIT 1.4 94 JUL 7 2006 29.34 40 50.79 123 18.45 27.65 17 2 .17 .5 2.5 KLA 2.0 94 JUL 8 109 33.40 38 48.96 122 50.41 2.47 8 .02 .3 .8 GEY 1.3 94 JUL 8 120 6.46 38 1.98 118 12.51 5.99 18 7 .16 2.511.8 NEV - 2.1 94 JUL 8 246 4.72 35 58.74 120 32.12 4.58 20 5 .08 .3 .4 MID 1.1 94 JUL 8 322 5.55 37 27.97 118 33.98 7.02 17 .07 .3 1.4 RVL 1.4 94 JUL 8 335 44.18 35 58.80 120 31.95 4.27 18 4 .07 .3 .6 MID 1.3 94 JUL 8 408 26.56 38 50.74 122 48.36 1.26 9 .05 .3 .9 GEY 1.2 94 JUL 8 416 9.08 41 14.84 125 6.96 8.00 14 .24 9.121.7 PON - 2.6 94 JUL 8 449 49.35 37 38.53 118 57.31 4.85 8 .05 .4 .9 SMO 1.3 94 JUL 8 545 58.31 36 35.20 121 11.44 5.72 7 .01 .8 1.7 PIN 1.6 94 JUL 8 559 29.66 38 48.73 122 48.56 3.79 9 .04 .3 .7 GEY 1.2 94 JUL 8 728 14.17 37 27.85 118 34.11 6.14 16 .08 .3 .9 RVL 1.8 94 JUL 8 925 14.22 36 33.73 120 57.87 15.18 10 .14 2.3 1.1 CRV 1.7 94 JUL 8 1035 24.09 36 7.13 120 12.77 10.86 14 1 .08 1.0 .9 COA 94 JUL 8 1229 6.39 38 49.42 122 48.57 4.20 8 .02 .4 .9 GEY 1.0 94 JUL 8 1301 54.97 37 26.20 118 32.26 11.94 14 .07 .4 1.4 CHA 2.0 94 JUL 8 1346 41.08 37 26.63 119 49.59 12.28 10 5 .22 .8 1.6 KAI 1.5 94 JUL 8 1427 56.89 38 49.56 122 47.32 0.94 15 .13 .3 .9 GEY 1.7 94 JUL 8 1626 29.46 40 37.31 124 16.11 19.23 11 .07 1.0 .6 EUR 1.7 94 JUL 8 1659 28.12 37 22.82 121 44.04 7.61 11 1 .03 .5 .6 ALU 1.0 94 JUL 8 1729 59.35 36 13.15 120 17.38 6.45 35 .20 .3 .6 COA 2.5 94 JUL 8 2245 21.13 35 45.75 118 22.00 7.56 14 1 .06 .3 1.1 WWF 1.9 94 JUL 8 2330 30.86 38 49.18 122 47.99 3.93 8 .01 .3 .7 GEY 1.2 94 JUL 8 2358 8.54 36 29.45 121 4.29 7.19 11 1 .04 .3 .6 BIT 1.0 94 JUL 9 6 29.25 38 49.04 122 47.59 5.15 45 1 .14 .2 .4 GEY 2.5 94 JUL 9 40 10.25 36 27.00 121 15.92 5.35 7 .07 1.0 2.3 SAL 1.1 94 JUL 9 41 32.26 38 49.26 122 47.92 4.12 9 .09 .6 .7 GEY 1.1 94 JUL 9 119 39.55 38 49.06 122 47.72 3.98 9 .07 .4 .9 GEY 1.2 94 JUL 9 132 30.38 40 14.23 124 10.86 11.62 13 2 .12 .6 .6 MEN 1.5 94 JUL 9 146 28.11 39 54.56 122 52.75 3.24 22 1 .27 .5 2.4 SAC 2.0 94 JUL 9 349 47.03 37 30.06 118 50.18 9.05 9 .08 .8 1.3 MOR 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 94 JUL 9 522 28.36 37 40.17 121 36.81 14.85 9 .08 .6 1.2 HAM 1.4 94 JUL 9 534 44.16 37 40.50 121 36.95 15.16 16 1 .17 .6 1.3 HAM 1.5 94 JUL 9 1042 14.92 37 37.97 118 52.57 5.75 9 .06 .6 .7 SMO 1.0 94 JUL 9 1049 21.79 39 21.35 120 10.84 7.68 13 5 .14 .9 2.3 WAK 2.3 94 JUL 9 1058 53.30 38 48.73 122 48.51 5.26 22 .09 .3 .6 GEY 1.8 94 JUL 9 1059 20.49 38 48.86 122 48.50 5.02 13 .07 .4 .7 GEY 1.4 94 JUL 9 1404 3.83 37 38.08 118 53.19 4.79 14 .06 .4 .5 SMO .9 94 JUL 9 1732 37.03 37 32.30 118 52.94 2.09 8 .05 3.1 6.9 MOR- 1.0 94 JUL 9 1859 26.10 38 49.91 122 46.67 1.22 8 .02 .3 .9 GEY 1.4 94 JUL 9 1900 54.86 38 49.79 122 46.52 1.12 9 .08 .3 1.4 GEY 1.2 94 JUL 9 2046 35.69 38 51.06 122 50.55 2.07 9 .05 .4 .7 GEY 1.4 94 JUL 9 2338 26.95 40 17.94 124 30.40 21.91 15 1 .09 1.5 .4 MEN 2.2 94 JUL 9 2349 34.64 37 35.59 118 49.30 5.46 40 3 .11 .3 .4 MOR 2.8 94 JUL 10 308 31.36 38 50.94 122 50.32 3.08 8 .05 .4 2.2 GEY 1.3 94 JUL 10 441 30.70 36 55.50 121 39.64 9.97 17 .10 .5 1.1 SJB 1.0 94 JUL 10 733 50.03 37 8.41 121 58.85 11.79 38 1 .08 .2 .5 LOM 1.5 94 JUL 10 756 28.79 38 49.69 122 49.61 1.55 14 .12 .4 1.0 GEY 1.6 94 JUL 10 1236 12.25 40 23.06 125 27.40 22.51 20 1 .24 5.014.8 MEN- 2.8 94 JUL 10 1341 19.60 36 1.37 121 33.33 4.80 21 1 .04 .7 2.1 SUR 1.6 94 JUL 10 1500 10.13 38 45.84 122 43.80 1.12 7 .02 .4 .7 GEY 1.1 94 JUL 10 1621 13.87 40 23.20 124 59.20 14.26 22 2 .27 2.0 1.1 MEN 2.9 94 JUL 10 1623 11.52 37 40.03 118 55.19 6.09 12 .07 .9 .6 DOM 1.0 94 JUL 10 1628 37.50 36 21.71 120 53.97 8.32 39 2 .08 .3 .5 BIT 2.0 94 JUL 10 1634 11.32 37 40.01 118 54.97 6.56 28 3 .09 .3 .4 DOM 1.7 94 JUL 10 1638 27.72 37 37.81 118 54.52 0.61 7 .21 .5 1.5 SMO 1.0 94 JUL 10 1714 42.76 37 39.96 118 54.99 6.55 16 1 .09 .4 .7 DOM 1.6 94 JUL 10 1727 18.07 37 40.01 118 56.07 5.39 10 .11 .6 1.2 SMO 1.0 94 JUL 10 1730 24.83 37 40.03 118 54.87 6.09 16 .08 .3 .7 DOM 1.5 94 JUL 10 1732 21.27 37 40.73 118 54.77 7.16 10 .07 .8 .9 DOM 1.0 94 JUL 10 1736 1.65 37 40.19 118 55.08 6.57 16 .13 1.0 .7 DOM 1.2 94 JUL 10 1738 40.00 37 40.19 118 55.04 6.22 18 .08 .4 .6 DOM 1.5 94 JUL 10 1739 13.55 37 40.13 118 55.03 6.19 21 .08 .3 .5 DOM 1.8 94 JUL 10 1740 23.86 37 41.08 118 54.90 7.21 13 .08 .9 .8 DOM 1.2 94 JUL 10 1753 50.80 37 39.92 118 55.20 6.45 35 2 .10 .3 .4 DOM 2.0 94 JUL 10 1754 41.52 37 40.03 118 55.11 6.38 38 3 .10 .3 .4 DOM 2.4 94 JUL 10 1803 58.89 37 41.01 118 55.11 6.24 11 .10 1.2 .9 DOM 1.0 94 JUL 10 1828 44.67 37 40.18 118 55.07 6.27 11 .04 .9 .6 DOM 1.2 94 JUL 10 1829 1.68 37 41.50 118 54.38 10.04 10 .15 4.2 2.3 DOM 1.0 94 JUL 10 1830 8.88 37 40.08 118 55.02 6.47 33 3 .10 .3 .4 DOM 2.0 94 JUL 10 1840 50.98 38 59.50 123 4.76 4.59 21 1 .07 .2 .9 MAA 1.7 94 JUL 10 1957 44.42 38 45.53 122 43.45 3.02 12 .10 .3 .9 GEY 1.4 94 JUL 10 2101 28.21 36 27.20 120 59.98 4.23 46 2 .11 .3 .7 BIT 2.5 94 JUL 10 2145 14.41 37 40.03 118 55.08 6.09 17 .08 .4 .6 DOM 1.9 94 JUL 10 2202 5.14 38 35.66 122 48.45 8.02 50 1 .17 .2 .7 ROG 2.6 94 JUL 10 2209 3.39 37 39.34 118 54.84 6.00 8 .13 .9 1.2 DOM 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 94 JUL 10 2247 31.22 37 39.33 118 50.54 5.28 9 .15 .9 2.0 HCF 1.0 94 JUL 11 35 42.55 38 49.13 122 46.47 2.95 27 .11 .2 .6 GEY 2.3 94 JUL 11 116 57.49 36 34.12 121 3.36 8.40 20 .11 .5 .9 BVL 1.4 94 JUL 11 117 11.08 38 59.52 123 4.75 4.13 15 .06 .2 .9 MAA 1.6 94 JUL 11 338 22.77 37 38.71 118 55.35 4.74 11 .20 .9 1.3 SMO 1.1 94 JUL 11 933 23.14 38 49.99 122 45.71 1.00 7 .02 .3 1.0 GEY 1.1 94 JUL 11 950 19.81 38 47.98 122 46.09 0.65 9 .14 .5 1.2 GEY 1.1 94 JUL 11 952 40.00 37 39.14 119 1.59 3.22 19 .10 .4 .5 MAM 1.6 94 JUL 11 957 53.28 37 39.03 119 1.38 2.25 7 .15 1.0 .6 MAM 1.0 94 JUL 11 1003 4.17 36 45.47 121 27.58 8.83 38 1 .19 .4 .7 SJB 1.7 94 JUL 11 1114 25.14 37 40.44 118 51.41 0.54 8 .11 .4 .7 DOM 1.3 94 JUL 11 1146 41.93 38 49.37 122 46.68 2.94 9 .04 .3 .8 GEY 1.2 94 JUL 11 1154 18.19 41 15.24 122 17.80 5.14 9 .10 .5 8.4 SHA - 1.2 94 JUL 11 1251 5.01 36 17.02 120 51.01 8.34 30 .17 .6 .9 BIT 1.8 94 JUL 11 1302 32.11 36 34.24 121 3.07 9.23 55 1 .15 .3 .5 BVL 2.7 94 JUL 11 1452 34.30 38 48.37 122 48.48 2.07 8 .11 .5 .6 GEY 1.2 94 JUL 11 1524 23.25 38 46.71 122 42.93 3.32 10 .11 .4 .8 GEY 1.4 94 JUL 11 1548 38.56 37 40.32 118 51.24 1.49 20 .07 .2 .4 DOM 2.0 94 JUL 11 1605 26.17 37 40.59 118 51.26 1.22 16 2 .07 .3 .4 DOM 1.2 94 JUL 11 1606 37.09 37 40.43 118 51.27 1.44 18 2 .08 .3 .4 DOM 1.8 94 JUL 11 1825 48.79 38 5.44 121 52.59 20.14 37 .18 .5 .6 JQN 2.5 94 JUL 11 2005 59.42 38 49.65 122 47.34 0.17 9 .10 .3 1.6 GEY * 1.2 94 JUL 11 2057 13.06 39 52.61 120 50.41 3.88 28 1 .28 1.0 8.0 WAK- 2.7 94 JUL 11 2127 40.12 40 21.68 124 29.10 21.20 7 1 .12 2.2 1.1 MEN 1.4 94 JUL 11 2214 54.40 36 46.26 121 28.83 9.52 28 2 .17 .4 .7 SJB 1.5 94 JUL 11 2235 2.30 38 46.88 122 56.50 5.01 7 .03 .4 2.1 ROG 1.0 94 JUL 12 40 52.01 37 40.08 118 51.11 1.18 13 .08 .5 .4 DOM 1.6 94 JUL 12 210 30.28 37 38.44 118 50.80 2.07 11 .10 .3 2.7 HCF 1.2 94 JUL 12 224 5.65 36 58.95 121 45.31 12.73 17 2 .13 .7 1.2 SJB 1.0 94 JUL 12 320 27.05 36 30.03 121 4.51 3.70 12 .07 .3 .5 BIT .9 94 JUL 12 332 35.89 40 58.47 121 32.49 18.92 14 3 .15 .8 2.1 MOD 1.7 94 JUL 12 600 41.03 37 41.02 118 49.82 3.72 7 .03 1.1 .8 HCF 1.0 94 JUL 12 637 18.24 38 55.75 123 1.91 1.75 9 .02 .3 8.4 MAA - 1.1 94 JUL 12 913 12.04 37 22.73 118 46.82 12.96 32 2 .10 .5 .9 KAI 2.6 94 JUL 12 1013 14.05 35 41.18 118 11.99 12.40 13 2 .12 .5 .6 WWF 1.6 94 JUL 12 1238 46.88 35 30.68 118 10.65 14.52 13 2 .11 .5 .7 WWF 1.6 94 JUL 12 1251 59.81 38 36.08 122 48.50 6.43 14 .12 .4 1.6 ROG 1.3 94 JUL 12 1304 10.64 39 1.09 123 6.74 0.03 18 1 .08 .2 1.6 MAA 1.6 94 JUL 12 1316 57.44 37 40.48 118 51.11 1.68 17 2 .05 .3 .5 DOM 1.6 94 JUL 12 1420 16.49 38 47.70 122 44.67 1.41 10 .04 .2 .7 GEY 1.4 94 JUL 12 1520 7.11 38 49.35 122 47.95 4.12 8 .01 .4 .8 GEY 1.4 94 JUL 12 1645 11.43 36 58.88 121 37.89 4.68 40 2 .17 .3 .6 SAR 1.6 94 JUL 12 1753 34.76 36 0.94 120 33.74 4.31 17 3 .07 .3 .8 SLA 1.6 94 JUL 12 1755 45.12 38 49.44 122 49.36 2.53 18 .13 .3 .8 GEY- 1.8 94 JUL 12 1756 16.39 38 49.48 122 49.31 3.23 30 .12 .3 .8 GEY 2.5 --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 JUL 12 1804 28.14 38 49.89 122 49.33 1.78 26 1 .09 .2 .7 GEY 2.0 94 JUL 12 1806 40.93 38 49.87 122 49.38 1.49 12 .07 .3 .8 GEY 1.5 94 JUL 12 1808 49.20 40 23.29 125 43.30 7.85 11 .2312.720.7 MEN - 2.7 94 JUL 12 1808 59.37 38 49.81 122 49.21 2.03 12 .04 .3 .8 GEY 1.6 94 JUL 12 1847 29.72 38 35.91 122 47.87 9.19 9 1 .20 .7 2.3 ROG 1.3 94 JUL 12 2018 32.66 37 20.67 121 42.66 4.52 7 .02 .9 1.4 ALU .9 94 JUL 12 2056 54.67 37 9.15 121 57.09 8.22 11 .06 .5 1.2 LOM 1.1 94 JUL 12 2113 12.33 40 17.95 124 20.23 7.75 8 1 .07 .9 .9 MEN 1.5 94 JUL 12 2159 28.18 38 45.28 122 42.31 1.98 7 .04 .6 .5 NAP 1.3 94 JUL 12 2229 43.71 38 49.31 122 47.02 3.19 17 1 .12 .4 .7 GEY 1.5 94 JUL 12 2338 26.34 40 27.72 121 33.00 3.90 10 2 .04 .4 .8 LAS 1.5 94 JUL 13 3 12.62 37 21.94 121 44.03 3.28 25 .05 .2 .6 ALU 1.4 94 JUL 13 106 13.48 36 38.62 121 15.74 3.32 19 2 .09 .3 .6 STN 1.2 94 JUL 13 132 17.84 39 17.80 122 48.09 6.20 47 2 .14 .2 1.1 BAR 2.1 94 JUL 13 232 28.70 40 19.06 121 13.39 1.82 12 2 .07 .6 .6 ALM- 1.8 94 JUL 13 412 38.97 38 47.93 122 44.21 0.16 8 .03 .3 1.0 GEY 1.3 94 JUL 13 533 31.89 38 49.76 122 48.41 1.54 15 1 .04 .2 .5 GEY 1.6 94 JUL 13 608 37.99 38 49.10 122 48.38 4.29 9 .02 .3 .8 GEY 1.3 94 JUL 13 853 11.57 39 13.52 122 14.56 20.86 13 2 .09 .8 .7 SAC 1.7 94 JUL 13 926 23.30 37 23.43 121 44.33 9.10 20 .06 .3 .6 ALU .9 94 JUL 13 1006 28.34 37 23.52 118 8.09 12.22 10 1 .06 1.0 1.1 WHI 1.6 94 JUL 13 1131 16.92 40 47.27 122 21.89 23.56 8 1 .13 .6 2.4 SHA 1.6 94 JUL 13 1302 3.47 38 55.92 123 1.83 1.25 9 .18 .715.8 MAA-- 1.4 94 JUL 13 1429 3.20 37 36.62 118 52.20 3.32 8 .03 .4 1.2 SHE 1.4 94 JUL 13 1728 39.80 36 44.32 121 27.66 10.12 74 .24 .3 .6 SJB 2.6 94 JUL 13 1802 33.73 36 44.26 121 26.97 10.04 28 .21 .5 .7 SJB 1.7 94 JUL 13 1842 2.66 37 30.68 118 45.29 5.46 11 .06 .6 .5 WCN 1.4 94 JUL 13 2101 13.10 36 45.17 121 35.34 2.54 10 .18 .7 2.5 SAL 1.8 94 JUL 13 2104 7.63 36 53.84 121 37.34 2.28 12 .08 .3 1.4 SJB 2.3 94 JUL 13 2125 11.38 39 19.78 120 5.09 15.44 17 .12 2.5 4.0 WAK 3.1 94 JUL 13 2131 41.26 38 47.71 122 46.09 1.53 13 .07 .3 .6 GEY 1.6 94 JUL 13 2238 53.12 38 47.76 122 44.63 1.86 9 .13 .4 1.1 GEY 1.3 94 JUL 14 24 50.25 37 45.18 122 7.88 7.10 9 .07 .4 .9 HAY 1.1 94 JUL 14 535 31.83 37 37.54 118 57.98 7.41 8 .05 .9 1.6 SMO 1.4 94 JUL 14 623 56.11 38 48.34 122 48.37 4.21 27 .14 .3 .6 GEY 2.3 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 ------------------------------------------------------------------------------- JUL 04 025603.8% 33.695S 70.665W 33N 0.3 8 CHILE-ARGENTINA BORDER. MD 3.0 054752.1 31.607S 70.220W 120G 0.7 13 CHILE-ARGENTINA BORDER. MD 4.2 070215.0* 31.655N 113.480W 10G 4.0 1.1 10 GULF OF CALIFORNIA. ML 3.5 (GS). 073925.2 61.782N 149.540W 33N 0.6 10 SOUTHERN ALASKA. ML 3.0 (PMR). 100707.4% 33.696S 70.700W 33N 0.4 9 CHILE-ARGENTINA BORDER. MD 3.2 134233.8? 32.79 S 69.92 W 110G 0.3 8 MENDOZA PROV., ARGENTINA. MD 3.4 140717.7% 33.688S 70.661W 33N 0.3 10 CHILE-ARGENTINA BORDER. MD 3.3 JUL 05 100057.9* 28.511N 34.712E 10G 3.9 0.2 13 EGYPT. MD 4.2 (HLW). 103642.7? 7.68 N 71.64 W 33N 4.5 0.8 16 VENEZUELA 185347.5 59.730N 153.569W 145 0.7 76 SOUTHERN ALASKA 222609.9 63.030N 150.406W 120G 3.6 0.9 84 CENTRAL ALASKA JUL 06 061921.3* 55.169N 163.193W 100G 4.3 1.1 26 UNIMAK ISLAND REGION 081005.5& 61.960N 156.320W 10G 41 SOUTHERN ALASKA. . ML 3.3 JUL 07 053448.6& 59.830N 153.500W 139 46 SOUTHERN ALASKA. . 055216.3& 58.550N 155.300W 131 72 ALASKA PENINSULA. . 065638.5& 59.520N 153.460W 120 3.7 93 SOUTHERN ALASKA. . 151921.4 34.279N 118.475W 10G 0.9 52 SOUTHERN CALIFORNIA. ML 3.0 154609.3 34.932N 116.940W 5G 0.7 24 SOUTHERN CALIFORNIA. ML 3.0 (GS). Felt in the Barstow area. 194425.2? 51.78 N 166.01 W 57* 4.6 1.3 14 SOUTH OF ALEUTIAN IS. ML 4.4 222417.6* 29.712N 142.145E 33N 4.7 1.1 26 SOUTH OF HONSHU, JAPAN 225410.4 1.103S 78.354W 10G 5.0 0.9 66 ECUADOR. Felt (V) at Ambato, (IV) at Latacunga and (II) at Quito. JUL 08 055226.6% 33.974S 70.190W 10G 0.3 9 CHILE-ARGENTINA BORDER. MD 3.3 072733.1* 51.104N 178.895W 33N 4.6 1.1 29 ANDREANOF ISLANDS, ALEUTIAN IS. JUL 09 034657.6? 16.53 S 72.94 W 33N 4.9 0.8 19 NEAR COAST OF PERU 114412.7 51.489N 175.200W 47* 4.8 3.9 1.0 47 ANDREANOF ISLANDS, ALEUTIAN IS. ML 4.7 (PMR). Felt on Adak. 121559.0 55.509N 158.192W 33N 4.8 0.8 42 ALASKA PENINSULA. ML 4.6 (PMR). Felt (II) at Chignik. 155758.9* 37.120S 94.937W 26D 5.4 5.0 0.8 55 WEST CHILE RISE 225610.4 34.270N 118.461W 10G 0.8 51 SOUTHERN CALIFORNIA. ML 3.0 JUL 10 025833.1 13.853S 167.141E 198D 4.6 0.8 49 VANUATU ISLANDS 122712.3 60.723N 151.759W 90G 0.9 14 KENAI PENINSULA, ALASKA 190645.2 34.803N 116.287W 5G 0.9 25 SOUTHERN CALIFORNIA. ML 3.0 231405.2 36.461N 70.186E 217D 4.9 0.9 63 HINDU KUSH REGION, AFGHANISTAN JUL 11 021855.3 63.009N 151.018W 116* 4.1 0.8 13 CENTRAL ALASKA 024800.2* 0.350S 132.806E 33N 4.7 4.1 0.7 14 IRIAN JAYA REGION, INDONESIA 031637.8 19.135N 66.753W 33N 4.3 0.5 19 PUERTO RICO REGION. MD 4.2 064756.2* 31.041S 70.063W 10G 1.1 13 CHILE-ARGENTINA BORDER. MD 4.7 064914.5 34.255N 118.716W 10G 0.7 56 SOUTHERN CALIFORNIA. ML 3.2 065048.5 34.275N 118.722W 10G 0.9 67 SOUTHERN CALIFORNIA. ML 3.7 (GS). Felt in the Northridge area. 075754.4* 50.796N 129.328W 10G 3.5 0.8 26 VANCOUVER ISLAND REGION 093006.9 31.802N 114.820W 10G 1.0 29 GULF OF CALIFORNIA. ML 3.6 (GS). 121233.8% 33.683S 70.522W 90G 0.2 9 CHILE-ARGENTINA BORDER. MD 3.4 143410.4 34.605N 116.599W 10G 0.9 34 SOUTHERN CALIFORNIA. ML 3.0 205737.3* 37.383N 54.347E 26D 4.6 4.4 1.4 34 TURKMENISTAN-IRAN BORDER REGION 223245.0 41.074N 142.976E 49* 4.5 1.1 24 HOKKAIDO, JAPAN REGION JUL 12 043504.8* 36.426N 71.108E 244D 4.5 0.5 15 AFGHANISTAN-TAJIKISTAN BORD REG. 054722.9? 17.30 N 99.92 W 33N 3.7 0.9 10 GUERRERO, MEXICO 134734.5 19.764N 70.937W 33N 4.9 5.0 0.9 67 DOMINICAN REPUBLIC REGION. Felt strongly at Imbert, Puerto Plata and Santiago. Felt at Hato Mayor, Mao and Santo Domingo. 202605.6 44.464N 114.311W 5G 1.0 13 WESTERN IDAHO. ML 3.6 (GS). Felt at Challis. JUL 13 023558.7? 15.96 S 167.44 E 33N 5.2 7.3 1.2 29 VANUATU ISLANDS. Mo=1.0*10**20 Nm (PPT). Felt strongly at Port-Vila. 114526 Q 7.0 S 127.2 E 180 5.9 0.9 70 BANDA SEA JUL 14 000927 Q 16.1 S 167.2 E 33N 5.9 1.0 27 VANUATU ISLANDS 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.