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 March 14 - 20, 1996 Stephen R. Walter U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 San Francisco Bay Area Seismicity was relatively low throughout most of the Bay Area, the exception being an active cluster on the creeping San Andreas south of Hollister. During the seven-day period ending at midnight on Wednesday, March 20, 1996 the U.S. Geological Survey office in Menlo Park recorded 32 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Eleven were as large as M2 including four M3 events southeast of Hollister. This total compares to 32 earthquakes during the previous seven -day period (March 7 - 13), five of which were as large as M2.0 Three of the four M3 earthquakes on the creeping segment occurred early Saturday morning about 12 miles southeast of Hollister (#3/1). The fourth and largest event occurred late Tuesday night and, like the others, was probably felt locally. This segment of the San Andreas routinely experiences earthquakes of this magnitude, most recently on January 14 and November 24. Other events of note in the SouthBay included a M2.0 on the Calaveras (#5/1) and a M2.1 on theQuien Sabe fault (#2/1). The central Bay Area was relatively quiet with the largest earthquake being a M2.6 in the northern Diablo Range about eight miles southeast of Livemore (#4/1). M2.1 earthquakes occurred on the central Calaveras fault east of Milpitas (#1/1) and along the San Gregorio fault about 12 miles west of Santa Cruz (#6/1). A slightly smaller M2.0 occurred on the central Hayward fault just east of Alameda (#7/1). Northern & Central California Only two earthquakes as large as M2 occurred in the Cape Mendocino area during the week: a M2.0 early Tuesday about 20 miles northeast of Petrolia (#7/2) and a M2.9 Wednesday evening on the Mendocino fracture zone about 20 miles west of Petrolia (#9/2). The Coast Range was equally quiet with a M2.0 on the Maacama fault about nine miles north of Ukiah (#2/2) and a M2.0 on the Rogers Creek fault just three miles west of Glen Ellen (#9/2). Activity in central California was limited to the creeping segment of the San Andreas. In addition to the four M3 events southeast of Hollister (discussed above), there were a pair of M2's north of Pinnacles National Monument on Monday afternoon and evening (#5/2). The east side of the Sierra Nevada saw one M2 aftershock in the Markleeville area (#4/2), a M2 in the eastern Mono Basin (#1/2), and a M2.4 about 20 miles southwest of Bishop (#6/2). Long Valley Caldera Three felt M3 earthquakes occurred within the caldera Saturday evening, part of an active cluster that was located 1 to 2 miles east of Mammoth Lakes (#1/3). This activity began last Wednesday (see last week's report), becoming most active late Saturday afternoon and evening. As this activity began to decline, two other areas in the caldera experienced some minor activity: a pair of M2's east of the airport (#4/3) and a M2.7 beneath Mammoth Mountain about two miles west of Mammoth Lakes (#5/3). USA Seismicity (March 12 - 20) The National Earthquake Information Center reported several domestic earthquakes of note. Of most concern was an earthquake swarm beneath the Akutan volcano in the eastern Aleutian Islands (#2/5). At the height of the activity last Thursday, residents of Akutan reported feeling earthquakes every several minutes. Seismicity has declined to several felt events per day since the weekend. Seismologists monitoring the earthquakes believe they are caused by magma moving within the volcano and have warned of a chance that the volcano could erupt. Minor earthquakes occurred within the lower 48 states outside of California.: a M 2.8 in eastern Idaho (#1/4) and a M2.9 in central New Mexico (#3/4). Canada however experienced several moderate events during the week including a M4.1 in eastern Ontario that was felt in the Montreal and Ottawa areas (#2/4) and a Mb5.1 near the west coast of Vancouver Island (#4/4). The Planet Earth (March 12 - 20) A Ms6.0 earthquake along the Kyrgyzstan-Xinjiang border killed at least 26 people and destroyed over 1500 homes in Jiashi County in westernmost China (#5/5). At least 10,000 people were left homeless and forced to seek shelter from the cold in tents. Other moderate to large earthquakes on the planet included a pair of M5's near the coast of Oaxaca, Mexico that were felt in Mexico City (#6/5), a Ms6.0 in eastern Papua New Guinea (#4/5), and a Mb5.9 south of Honshu, Japan (#3/5). --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 96 MAR 14 1518 7.78 38 48.19 122 48.41 3.45 34 1 .04 .1 .3 GEY 2.4 96 MAR 15 859 34.14 37 24.90 121 45.85 7.55 80 2 .06 .1 .4 ALU 2.1 96 MAR 15 947 49.20 38 51.58 122 47.91 1.90 28 .06 .2 .5 GEY 2.1 96 MAR 15 1017 25.85 37 38.45 118 53.34 8.03 28 .09 .3 .4 SMO 2.6 96 MAR 15 1118 9.90 37 38.51 118 53.35 7.58 28 1 .07 .3 .4 SMO 2.1 96 MAR 15 1505 1.56 38 2.62 118 47.49 6.46 16 .12 1.510.9 MOL - 2.2 96 MAR 15 2231 42.66 39 16.17 123 7.26 7.79 22 3 .07 .2 1.2 MAA 1.9 96 MAR 16 438 26.75 36 49.46 121 17.31 8.79 45 .09 .2 .3 QUI 2.2 96 MAR 16 1134 14.65 37 39.52 118 58.50 3.10 14 .23 .7 1.8 SMO 2.3 96 MAR 16 1157 39.99 37 38.09 118 57.53 8.59 16 .13 .5 .7 SMO 2.3 96 MAR 16 1219 27.35 36 41.29 121 18.90 4.83 59 .09 .2 .3 STN 3.0 96 MAR 16 1319 31.89 37 38.45 118 56.80 7.49 16 .07 .4 .5 SMO 2.2 96 MAR 16 1550 45.65 37 34.68 118 51.86 8.01 28 .07 .3 .4 MOR 2.4 96 MAR 16 1554 56.21 36 40.65 121 17.84 4.89 61 1 .08 .1 .3 STN 3.4 96 MAR 16 1614 54.38 36 41.58 121 19.16 4.54 66 1 .10 .1 .3 STN 3.1 96 MAR 16 1617 16.58 36 40.37 121 17.77 4.25 25 .06 .2 .5 STN 2.0 96 MAR 16 1847 41.05 37 25.50 118 37.00 8.80 19 .09 .4 .9 RVL 2.8 96 MAR 16 2008 8.77 38 50.81 122 48.66 1.07 18 .06 .2 .6 GEY 2.2 96 MAR 16 2027 5.39 37 38.30 118 57.20 7.69 16 .09 .4 .5 SMO 2.4 96 MAR 16 2157 25.88 37 34.10 121 41.52 6.55 79 .07 .1 .3 HAM 2.6 96 MAR 17 56 1.70 37 38.26 118 57.09 9.31 9 .10 .6 .7 SMO 2.4 96 MAR 17 58 23.02 37 39.03 118 56.39 5.74 12 .09 .4 .8 SMO 3.0 96 MAR 17 132 32.24 37 38.60 118 56.68 7.62 12 .09 .5 .8 SMO 2.1 96 MAR 17 310 22.88 37 38.35 118 57.22 9.38 17 .10 .4 .6 SMO 3.2 96 MAR 17 314 23.16 37 38.87 118 56.98 11.91 11 .40 2.4 2.1 SMO 2.0 96 MAR 17 318 22.54 37 38.00 118 56.91 9.12 23 .10 .4 .5 SMO 3.4 96 MAR 17 327 54.89 37 40.42 118 55.42 5.15 10 .42 1.5 4.1 DOM 2.1 96 MAR 17 330 57.49 37 38.56 118 54.89 10.63 10 .08 .8 1.9 SMO 2.2 96 MAR 17 336 25.87 37 38.72 118 55.65 7.70 16 .15 .5 .8 SMO 2.7 96 MAR 17 349 47.57 37 37.95 118 55.67 9.48 15 .11 .6 .7 SMO 2.2 96 MAR 17 420 44.59 37 38.26 118 55.88 8.26 22 .10 .3 .5 SMO 2.8 96 MAR 17 421 58.05 37 38.30 118 55.84 8.94 11 .13 .6 .9 SMO 2.5 96 MAR 17 426 20.16 37 38.73 118 55.53 4.85 11 .21 .8 1.8 SMO 2.1 96 MAR 17 427 19.69 37 38.80 118 56.24 7.26 13 .23 .8 1.1 SMO 2.6 96 MAR 17 555 8.27 37 38.44 118 49.21 9.11 12 .07 .5 .8 HCF 2.0 96 MAR 17 1519 54.32 36 27.28 120 54.70 17.32 27 .11 .5 .6 CRV 2.0 96 MAR 17 1545 32.39 37 38.65 118 49.43 8.37 16 .08 .4 .7 HCF 2.0 96 MAR 17 1629 59.78 36 44.84 121 20.23 8.04 42 .20 .4 .7 PAI 2.0 96 MAR 18 216 37.73 38 43.75 119 36.27 6.77 16 .08 .4 1.4 WAK 2.3 96 MAR 18 704 21.56 37 38.92 119 0.30 1.15 14 .23 1.0 .8 MAM 2.7 96 MAR 18 2105 5.99 36 35.39 121 11.87 5.99 32 .07 .3 .5 PIN 2.1 96 MAR 18 2132 4.30 37 40.30 118 38.00 33.39 11 .35 4.9 7.5 GLA 2.1 96 MAR 19 216 30.08 37 12.11 118 42.99 7.16 11 .46 6.229.8 KAI - 2.4 96 MAR 19 505 57.33 36 32.77 121 6.03 7.83 40 .09 .2 .4 PIN 2.4 96 MAR 19 853 29.93 40 31.48 124 2.85 21.89 8 .06 .5 .8 EUR 2.0 96 MAR 19 950 14.33 36 59.39 122 13.39 7.98 39 .12 .5 1.1 MON 2.1 96 MAR 19 1918 31.57 37 38.15 118 55.72 9.55 14 .12 .5 .7 SMO 2.3 96 MAR 20 31 27.08 37 46.64 122 11.48 11.02 35 .10 .2 .5 HAY 2.0 96 MAR 20 830 0.02 36 41.51 121 19.13 4.56 63 .10 .2 .4 STN 3.6 96 MAR 20 832 38.25 36 41.29 121 19.07 3.54 33 .08 .2 .6 STN 2.2 96 MAR 20 849 45.44 37 36.40 118 57.92 4.77 11 .07 .6 .5 SHE 2.0 96 MAR 21 202 11.85 40 26.74 124 39.09 6.33 25 .12 1.8 1.7 MEN 2.9 96 MAR 21 335 23.80 38 21.18 122 35.01 3.62 12 .12 .3 1.4 ROG 2.0 96 MAR 21 620 19.91 38 47.24 122 46.29 3.43 23 .17 .3 .8 GEY 2.1 96 MAR 21 621 25.16 37 38.49 118 56.69 7.67 12 .06 .4 .8 SMO 21 UTC TIME LAT LONG DEP GS MAGS SD STA REGION AND COMMENTS HRMNSEC MB Msz USED -------------------------------------------------------------------- MAR 12 020626.3 54.243N 165.919W 33N 4.0 1.0 34 FOX ISLANDS, ALEUTIAN ISLANDS 025046.5 52.045N 158.290E 100G 4.2 1.0 41 NEAR EAST COAST OF KAMCHATKA 032437.4* 53.338N 153.496E 500G 3.3 0.7 13 SEA OF OKHOTSK 044908.4* 0.690S 136.144E 33N 4.4 1.6 15 IRIAN JAYA REGION, INDONESIA 052419.1 15.985N 97.631W 33N 4.6 0.9 67 NEAR COAST OF OAXACA, MEXICO 104427.3 63.306N 151.019W 15 0.7 12 CENTRAL ALASKA. ML 2.9 (GS). 134453.5* 15.963S 172.859W 33N 4.4 0.8 30 SAMOA ISLANDS REGION 151052.1* 35.806N 27.279E 132? 3.9 1.3 27 DODECANESE ISLANDS 155257.9 6.836N 72.993W 160D 4.3 0.9 24 NORTHERN COLOMBIA 175153.6% 32.690S 71.816W 10G 0.4 10 NEAR COAST-CENTRAL CHILE. MD 3.9 184901.4* 26.829S 26.482E 10G 4.4 1.2 15 REPUBLIC OF SOUTH AFRICA 201123.7 51.644N 16.110E 10G 3.1 0.9 21 POLAND. ML 3.6 (GRF), 3.2 (MOX). 2 04458.4* 6.522S 154.538E 33N 4.1 0.7 12 SOLOMON ISLANDS 212018.3 30.042N 88.198E 33N 4.9 4.4 0.7 65 XIZANG 220608.3 2.848N 126.532E 76* 5.0 1.1 68 NORTHERN MOLUCCA SEA 231645.1* 31.412S 117.841E 10G 1.0 5 WESTERN AUSTRALIA 233218.9* 27.566N 139.867E 488* 3.6 0.6 16 BONIN ISLANDS REGION MAR 13 003719.2* 7.064S 117.340E 500G 4.3 1.4 11 BALI SEA 004745.5* 42.389N 130.911E 588? 3.6 0.7 22 E. RUSSIA-N.E.CHINA BORDER REG. 033842.9* 54.132N 166.129W 33N 4.0 1.0 22 FOX ISLANDS, ALEUTIAN ISLANDS 035214.4 27.044N 100.416E 33N 4.8 0.5 31 YUNNAN, CHINA 035352.8 42.718N 111.305W 5G 0.6 12 EASTERN IDAHO. ML 2.8 (GS). 060421.1* 35.504N 79.028E 33N 4.0 0.8 15 KASHMIR-XIZANG BORDER REGION 094457.2* 22.663S 68.579W 104D 4.1 1.0 15 NORTHERN CHILE 131502.5* 20.998S 176.552W 186? 4.8 1.1 34 FIJI ISLANDS REGION 132320.1 29.047S 71.400W 60G 4.4 1.0 19 NEAR COAST-CENTRAL CHILE. MD 4.9 133418.0* 45.183N 149.0 1E 33N 4.3 1.0 26 KURIL ISLANDS 142028.3* 10.929S 162.056E 62? 4.3 0.9 18 SOLOMON ISLANDS 142044.4* 2.875N 126.451E 100G 4.3 1.4 8 NORTHERN MOLUCCA SEA 161200.3 36.438N 117.836W 5G 0.5 30 CALIFORNIA-NEVADA BORDER. ML 2.9 162704.3 6.757S 127.756E 300 5.3 0.9 129 BANDA SEA 180616.9* 8.214S 120.010E 168? 3.8 0.3 8 FLORES REGION, INDONESIA 200619.5* 1.060S 136.735E 33N 3.6 0.3 7 IRIAN JAYA REGION, INDONESIA 204332.5* 9.909N 126.036E 33N 4.2 1.2 16 MINDANAO, PHILIPPINE ISLANDS 230516.4* 12.382N 125.542E 33N 4.2 1.2 14 SAMAR, PHILIPPINE ISLANDS MAR 14 001126.2* 51.790N 30.028W 10G 3.5 1.3 20 NORTHER MID-ATLANTIC RIDGE 015637.1 44.326N 11.618E 10G 1.4 23 NORTHERN ITALY. ML 3.5 (VIE). 023349.5 51.804N 30.137W 10G 4.1 1.0 32 NORTHERNMID-ATLANTIC RIDGE 035539.9* 54.257N 165.824W 33N 4.1 1.4 30 FOX ISLANDS, ALEUTIAN ISLANDS. ML 4.8 (PMR). Felt (IV) at Akutan. 041131.4? 50.22 N 26.40 W 10G 4.5 1.3 14 NORTHERN MID-ATLANTIC RIDGE 050023.9 51.855N 30.114W 10G 4.5 5.2 0.9 39 NORTHERN MID-ATLANTIC RIDGE 052630.1 51.874N 30.130W 10G 4.5 4.9 0.9 57 NORTHERN MID-ATLANTIC RIDGE 054357.8 54.288N 165.976W 33N 4.5 5.0 1.1 71 FOX ISLANDS, ALEUTIAN ISLANDS. ML 5.3 (PMR). Felt (V) at Akutan. 061246.6 33.064N 117.763W 10G 0.8 24 SOUTHERN CALIFORNIA. MD 2.8 062521.3* 51.842N 30.065W 10G 4.5 0.6 11 NORTHERN MID-ATLANTIC RIDGE 070142.0* 44.913N 9.992E 10G 4.7 1.1 14 NORTHERN ITALY. ML 3.6 (VIE). 071915.8 54.296N 165.716W 33N 3.9 1.1 30 FOX ISLANDS, ALEUTIAN ISLANDS. 072848.3* 54.391N 166.119W 33N 4.0 1.3 27 FOX ISLANDS, ALEUTIAN ISLANDS. 072904.0* 10.277S 79.746W 33N 4.6 1.0 28 OFF COAST OF PERU 073326.7* 54.562N 166.043W 33N 4.1 1.2 19 FOX ISLANDS, ALEUTIAN ISLANDS 080806.7 51.968N 30.125W 10G 4.3 5.2 0.9 36 NORTHERN MID-ATLANTIC RIDGE 081245.3 54.510N 165.780W 33N 4.1 0.9 29 FOX ISLANDS, ALEUTIAN ISLANDS. 091212.7 19.613N 91.992W 33N 4.3 1.2 39 BAY OF CAMPECHE 091816.2* 54.217N 165.587W 33N 3.9 0.9 16 FOX ISLANDS, ALEUTIAN ISLANDS 095712.1* 51.760N 30.560W 10G 4.0 1.7 14 NORTHERN MID-ATLANTIC RIDGE 100023.2* 54.300N 165.762W 33N 4.1 1.3 28 FOX ISLANDS, ALEUTIAN ISLANDS. 102111.6? 54.11 N 166.44 W 33N 3.2 1.3 9 FOX ISLANDS, ALEUTIAN ISLANDS. 104226.0& 45.990N 74.430W 18 10 SOUTHERN ONTARIO, CANADA. Felt in the Montreal-Ottawa area. 105118.4* 54.183N 165.945W 33N 4.4 1.0 7 FOX ISLANDS, ALEUTIAN ISLANDS. ML 4.6 (PMR). Felt at Akutan. 110011.2% 33.681S 70.449W 10G 5.0 1.1 8 CHILE-ARGENTINA BORDER. MD 3.0 115618.2 54.219N 165.794W 33N 4.3 1.0 26 FOX ISLANDS, ALEUTIAN ISLANDS 120219.7 52.010N 30.291W 10G 4.4 5.3 1.1 45 NORTHERN MID-ATLANTIC RIDGE 120817.0* 54.627N 166.032W 33N 3.9 1.8 16 FOX ISLANDS, ALEUTIAN ISLANDS. 131342.2 54.183N 165.936W 33N 4.2 1.0 38 FOX ISLANDS, ALEUTIAN ISLANDS. 131801.4* 54.201N 166.142W 33N 4.0 1.0 15 FOX ISLANDS, ALEUTIAN ISLANDS 143531.5 51.967N 30.190W 10G 4.3 0.9 37 NORTHERN MID-ATLANTIC RIDGE 145204.9 29.366S 71.157W 33N 4.9 1.0 47 NEAR COAST-CENTRAL CHILE. Felt (V) at Andacollo, Coquimbo, La Higuera, La Serena and Vicuna; (IV) at Monte Patria and Ovalle. 150630.2* 6.455S 105.327E 33N 4.2 1.1 12 SUNDA STRAIT 152136.2 54.277N 165.784W 33N 4.2 1.0 55 FOX ISLANDS ALEUTIAN ISLANDS. ML 5.0 (PMR). Felt (V) at Akutan. 161355.8 54.204N 165.783W 33N 4.6 1.1 63 FOX ISLANDS,ALEUTIAN ISLANDS. ML 5.2 (PMR). Felt (V) at Akutan. 170013.9 54.301N 165.747W 33N 3.9 0.8 22 FOX ISLANDS,ALEUTIAN ISLANDS. ML 4.6 (PMR). Felt (IV) at Akutan. 182325.5? 54.41 N 165.78 W 33N 3.8 1.6 13 FOX ISLANDS,ALEUTIAN ISLANDS. ML 4.5 (PMR). Felt (IV) at Akutan. 192710.3? 9.44 S 125.30 E 33N 3.4 1.5 6 TIMOR REGION, INDONESIA 192803.8 54.246N 165.794W 33N 4.1 1.0 33 FOX ISLANDS, ALEUTIAN ISLANDS. ML 5.0 (PMR). Felt (IV) at Akutan. 211853.2 52.112N 30.062W 10G 4.6 1.1 49 NORTHERN MID-ATLANTIC RIDGE 214757.8 14.742N 55.790E 10G 4.6 1.2 50 ARABIAN SEA 224722.7* 5.380N 72.865W 33N 4.2 1.1 12 COLOMBIA 230616.5* 14.737N 55.883E 10G 3.9 0.4 8 ARABIAN SEA vMAR 15 001124.9 21.609N 143.074E 336 4.4 1.1 48 MARIANA ISLANDS REGION 043423.0* 8.434N 82.727W 33N 4.7 0.9 30 PANAMA-COSTA RICA BORDER 073603.8% 32.604S 71.305W 40G 0.3 10 NEAR COAST-CENTRAL CHILE. MD 3.6 080911.8* 36.206N 71.199E 145* 3.7 0.8 12 AFGHANISTAN-TAJIKISTAN BORD REG. 094333.8 52.156N 30.114W 8D 5.2 4.5 1.0 77 NORTHERN MID-ATLANTIC RIDGE 111746.8* 7.429S 128.233E 155* 4.8 0.4 9 BANDA SEA 124544.6 8.952S 77.604W 33N 5.0 4.5 0.9 54 CENTRAL PERU. Felt at Caraz. 131757.2& 33.586N 105.694W 10 6 NEW MEXICO.. mbLg 2.9 (GS). MD 2.7 (SNM). Felt in the Capitaw-Carrizozo area. 135434.1* 10.739N 86.411W 33N 4.6 0.9 20 OFF COAST OF COSTA RICA 141034.4 51.779N 175.483E 33N 4.2 1.2 37 RAT ISLANDS, ALEUTIAN ISLANDS 154018.4 1.083S 137.027E 17 4.9 0.9 24 NEAR NORTH COAST OF IRIAN JAYA 154243.5 0.866S 136.194E 33N 4.8 1.1 23 IRIAN JAYA REGION, INDONESIA MAR 16 091629.9 5.426S 131.886E 33N 4.7 0.9 20 BANDA SEA 114943.3* 21.142S 174.585W 33N 5.0 0.6 30 TONGA ISLANDS 143618.1* 36.950N 30.414E 33N 4.9 1.1 13 TURKEY 155455.7 36.650N 121.330W 5G 0.9 62 CENTRAL CALIFORNIA. ML 3.3 (GS). 161454.0 36.674N 121.365W 5G 0.8 48 CENTRAL CALIFORNIA. ML 3.0 (GS). 164038.7* 39.947N 141.751E 33N 4.7 0.3 18 EASTERN HONSHU, JAPAN 220406.3 29.008N 138.987E 476D 5.9 1.0 153 SOUTH OF HONSHU, JAPAN. Mw 6.6 231839.3 50.818N 129.734W 10G 4.4 1.1 25 VANCOUVER ISLAND REGION 235956.8 33.286N 118.334W 10G 1.2 28 SOUTHERN CALIFORNIA. MD 2.8 MAR 17 000746.1* 37.659N 71.718E 150G 4.4 0.7 25 AFGHANISTAN-TAJIKISTAN BORD REG. 031023.1 37.700N 118.938W 5G 0.7 39 CALIFORNIA-NEVADA BORDER. ML 3.2 031823.1 37.696N 118.923W 5G 1.1 57 CALIFORNIA-NEVADA BORDER. ML 3.3 042044.4 37.647N 118.919W 5G 0.8 14 CALIFORNIA-NEVADA BORDER. ML 2.9 090003.6* 52.763N 158.802E 33N 4.0 0.8 28 NEAR EAST COAST OF KAMCHATKA 141915.6% 33.242S 71.238W 60G 0.3 11 NEAR COAST-CENTRAL CHILE. MD 4.3 144856.3 14.686S 167.247E 164D 5.8 0.8 86 VANUATU ISLANDS. Mw 6.6 (GS), 175820.1* 6.083S 147.529E 33N 5.5 6.0 1.2 30 EASTERN NEW GUINEA REG., P.N.G. MAR 18 020616.5 35.513N 140.908E 33N 5.0 0.8 45 NEAR EAST COAST OF HONSHU, JAPAN 032150.9 35.986N 117.675W 5G 0.7 15 CENTRAL CALIFORNIA. ML 2.9 (GS). 080158.1 49.948N 126.876W 10G 5.1 4.3 0.8 81 VANCOUVER ISLAND REGION 090448.5* 21.440S 178.541W 400G 4.9 0.5 47 FIJI ISLANDS REGION 103015.2 6.091S 147.666E 33N 5.4 5.6 1.0 37 EASTERN NEW GUINEA REG., P.N.G. 220506.1* 43.253N 147.052E 33N 5.1 0.5 45 KURIL ISLANDS MAR 19 150026.5 40.009N 76.675E 33N 5.8 6.0 0.8 94 KYRGYZSTAN-XINJIANG BORDER REG. Mw 6.1 (GS), 6.3 (HRV). At least twenty-four people killed, forty injured, more than 1,000 houses destroyed in Jiashi County. 153135.6 24.920N 109.376W 10G 5.0 1.1 69 GULF OF CALIFORNIA 171242.4 15.835N 97.198W 33N 5.8 5.2 1.0 110 NEAR COAST OF OAXACA, MEXICO. Felt at Mexico City. MAR 20 045325.9 15.774N 97.229W 33N 5.3 4.6 0.9 65 NEAR COAST OF OAXACA, MEXICO 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.