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 January 2 - 8, 1996 Stephen R. Walter U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 San Francisco Bay Area Activity remained light last week. During the seven-day period ending at midnight on Wednesday, January 8, 1997 the U.S. Geological Survey office in Menlo Park recorded 20 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Three were as large as M2. This total compares to 20 earthquakes during the prior seven-day period (December 26 - January 1), six of which were as large as M2. The largest earthquakes in the area were a pair of M2.7 events, neither of which was reported to have been felt. The first occurred last Thursday evening on the central Calaveras fault just east of San Jose (#1/1). This area sees regular activity at the M2-4 level; the largest recent earthquake was a M4.7 just last May. The second M2.7 occurred late Monday evening on the San Andreas about eight miles southwest of Hollister (#3/1). Finally, a minor earthquake occurred Saturday beneath the central San Joaquin Valley about nine miles southwest of Stockton (#2/1). Northern & Central California A M3.5 occurred Sunday evening on the southern Maacama fault about eight miles southwest of Lakeport and was felt by people in the epicentral area (#1/2). Aside from a trio of M2's at the Geysers, the only other notable event in the Coast Ranges was a M2.0 Wednesday morning about eleven miles northwest of Cloverdale (#7/2). To the north the Cape Mendocino area remained relatively quiet though the largest earthquake in the region occurred Monday in the offshore Gorda Plate about 60 miles northwest of Ferndale (#4/2). A pair of M2's on Tuesday on the Mendocino fracture zone, the first a M2.9 that occurred about 55 miles off the coast, the second a M2.8 just ten miles west of the coast (#5/2). Activity onshore was limited to a M2.1 that, at a depth of about 31 km, occurred along the interface of the subducting Gorda Plate with the base of the North American Plate (#3/2). The eastern Sierra Nevada range saw a trio of M2's on Sunday about 18 miles north of Truckee (#2/2) and a M2.9 Wednesday evening about six miles east of Markleeville (#8/2). Central California experienced nothing stronger than a M2.5 on the creeping segment of the San Andreas about five miles northwest of the Pinnacles National Monument (#6/2). Long Valley Caldera The Long Valley area remained quiet during the past week with only one earthquake as large as M2 in the caldera and none in the Sierra Nevada terrane south of the caldera. The lone M2 event occurred Tuesday morning about one miles southwest of Mammoth Lakes and was apparently not felt locally, unsurprising given a magnitude of only M2.4 (#1/3). USA Seismicity (December 30 - January 7) The National Earthquake Information Center reported a M3.7 last Wednesday just north of Yakima, Washington (#1/4) followed the next day by a M2.9 along the Washington-Oregon border just southeast of Walla Walla (#2/4). Other domestic earthquakes of note include a M3.5 on the Kenai Peninsula of southern Alaska that was felt at Moose Pass and Seward, Alaska (#3/5) and a pair of M3-4 events in the Coso area of southern California (#3/4). The Planet Earth (December 30 - January 7) The largest earthquakes on the planet were a pair of M5.6 events. The first occurred in remote eastern Siberia and apparently produced no significant damage (#4/5). The second, along the Nepal-India border, produced extensive damage in the Khalanga Bassar area and was felt strongly in much of western Nepal (#5/5). Other moderate earthquakes of note include a M5.3 along the northern mid-Atlantic Ridge (#1/5) and a M5.3 in northern Columbia (#2/5). 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 97 JAN 2 1140 56.51 36 23.59 120 55.87 4.64 15 .08 .4 1.7 BIT 1.1 97 JAN 2 1237 9.92 38 47.51 122 44.68 1.28 32 .07 .1 .3 GEY 2.4 97 JAN 2 1441 31.68 37 38.09 118 56.23 5.03 7 .10 .7 .9 SMO 1.7 97 JAN 2 1543 56.62 38 49.56 122 47.70 4.11 15 .04 .2 .5 GEY 1.8 97 JAN 2 1557 51.24 38 46.97 122 45.78 2.25 14 .02 .2 .5 GEY 1.6 97 JAN 2 1738 57.46 38 48.84 122 46.66 1.14 7 .03 .3 .6 GEY 1.3 97 JAN 2 1812 17.48 38 44.89 122 42.77 2.55 30 1 .05 .2 .4 NAP 2.4 97 JAN 2 2127 50.83 38 47.99 122 46.07 1.83 10 .05 .3 .5 GEY 1.5 97 JAN 2 2148 21.52 38 48.34 122 48.18 2.82 12 1 .03 .2 .4 GEY 1.5 97 JAN 2 2158 52.42 36 6.04 120 39.32 3.54 21 1 .06 .2 .8 SLA 1.8 97 JAN 2 2236 9.26 39 0.85 123 3.66 3.23 40 .14 .2 .9 MAA 3.5 97 JAN 3 138 40.88 36 47.80 121 26.88 11.75 18 2 .09 .3 .5 SJB 1.4 97 JAN 3 240 16.63 37 39.01 118 57.28 6.34 7 .03 .6 .8 SMO 1.6 97 JAN 3 339 40.79 37 55.58 122 0.68 13.68 28 1 .13 .3 .6 CON 1.8 97 JAN 3 420 15.85 37 21.46 121 43.71 3.11 73 4 .08 .1 .3 ALU 2.7 97 JAN 3 643 11.30 36 49.32 121 27.81 9.35 10 .15 1.0 2.0 HOL 1.3 97 JAN 3 753 9.78 36 41.07 121 16.93 3.85 12 1 .03 .3 1.0 STN .9 97 JAN 3 1151 48.65 38 49.48 122 47.58 3.87 7 .03 .4 .9 GEY 1.1 97 JAN 3 1536 7.56 38 46.99 122 45.65 2.19 17 .05 .2 .6 GEY 1.6 97 JAN 3 1836 0.98 38 49.16 122 47.66 4.24 35 .04 .1 .3 GEY 2.3 97 JAN 3 1836 2.06 36 36.31 121 12.82 4.05 7 .03 .8 1.0 PIN 1.2 97 JAN 3 2046 29.87 36 46.04 121 16.92 7.79 30 .07 .2 .4 PAI 1.5 97 JAN 3 2116 1.46 37 20.48 121 42.60 4.36 21 1 .05 .2 .5 ALU 1.5 97 JAN 4 251 10.66 37 38.90 118 57.16 6.62 15 3 .03 .3 .5 SMO 1.3 97 JAN 4 256 37.44 38 46.40 122 44.13 1.07 15 .05 .2 .5 GEY# 1.6 97 JAN 4 455 55.90 39 46.00 123 33.49 7.02 8 .03 .5 1.0 MAA 1.5 97 JAN 4 1011 48.45 37 36.58 118 48.37 6.87 15 .07 .4 .6 HCF 1.4 97 JAN 4 1348 27.77 37 28.15 118 50.42 4.17 20 .08 .4 1.6 MOR 1.6 97 JAN 4 1352 3.19 37 37.79 118 47.04 4.53 8 1 .02 1.7 .9 EMO 1.3 97 JAN 4 1638 38.24 39 0.86 123 4.03 0.53 13 1 .03 .2 .8 MAA 1.6 97 JAN 4 1643 11.69 37 51.15 121 22.95 18.71 21 .08 .5 .4 JQN 2.1 97 JAN 4 2240 47.68 37 21.59 121 43.87 2.99 43 2 .07 .2 .3 ALU 1.8 97 JAN 5 54 41.57 38 49.11 122 48.59 4.00 7 .04 .4 .8 GEY 1.1 97 JAN 5 202 57.72 36 55.76 121 28.45 3.56 25 1 .09 .2 .5 BUS 1.3 97 JAN 5 257 58.81 36 34.71 121 11.09 6.87 19 1 .06 .3 .5 PIN 1.4 97 JAN 5 516 51.63 36 32.52 121 7.95 7.28 12 1 .02 .3 .8 PIN 1.0 97 JAN 5 610 42.46 37 17.52 121 40.43 2.31 17 1 .02 .2 .4 SFL 1.4 97 JAN 5 834 12.78 38 48.27 122 47.91 3.86 16 1 .03 .2 .4 GEY 1.8 97 JAN 5 900 29.04 37 29.40 118 47.13 0.02 19 .11 .7 .5 MOR## 1.7 97 JAN 5 1133 52.84 36 34.33 121 7.27 8.78 29 .06 .2 .5 BVL 1.7 97 JAN 5 1553 53.57 36 55.81 121 28.41 3.36 30 .12 .2 .6 BUS 1.5 97 JAN 5 1615 4.06 38 49.45 122 47.97 3.85 15 .02 .2 .4 GEY 1.8 97 JAN 5 1827 59.39 39 34.79 120 8.03 2.30 24 1 .18 1.8 2.4 WAK # 2.8 97 JAN 5 1842 12.69 36 53.11 121 37.65 9.50 19 .06 .3 .5 SJB 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 97 JAN 5 2151 6.76 37 17.39 121 40.30 5.48 9 .02 .4 1.9 SFL 1.1 97 JAN 5 2154 45.57 38 32.97 122 31.06 6.45 19 3 .09 .3 .7 NAP 1.5 97 JAN 5 2255 54.29 39 34.55 120 9.23 5.00 14 .10 1.9 3.4 WAK 2.6 97 JAN 6 57 47.18 39 1.34 123 4.47 0.03 7 1 .03 .6 2.2 MAA## 1.6 97 JAN 6 545 44.76 37 38.36 118 51.81 13.01 7 .05 1.5 1.2 SMO 1.2 97 JAN 6 553 25.17 37 38.20 118 56.36 6.20 11 1 .06 .4 .9 SMO 1.1 97 JAN 6 619 26.82 41 7.73 123 18.78 31.45 8 1 .05 .8 1.9 KLA 2.1 97 JAN 6 705 25.07 36 40.14 121 17.55 4.26 30 2 .05 .1 .4 STN 1.7 97 JAN 6 812 14.45 39 32.23 120 16.11 12.59 14 .04 2.3 1.7 WAK 2.6 97 JAN 6 833 21.20 36 13.80 120 25.14 10.82 8 .01 1.4 3.0 COA 1.4 97 JAN 6 1452 49.47 38 49.37 122 48.30 3.74 10 .05 .3 .6 GEY 1.6 97 JAN 6 1727 16.04 38 49.62 122 47.68 0.12 7 .11 .4 2.3 GEY # 1.3 97 JAN 6 1727 41.69 38 48.73 122 48.88 4.02 17 .03 .2 .6 GEY 1.7 97 JAN 6 1942 36.41 37 39.67 118 52.35 6.05 10 1 .03 .7 1.4 DOM 1.5 97 JAN 6 1953 35.48 38 48.40 122 48.03 1.56 15 1 .04 .2 .3 GEY 1.7 97 JAN 6 2040 49.66 38 46.37 122 44.07 1.11 9 1 .03 .3 .6 GEY 1.4 97 JAN 6 2041 3.84 36 26.84 121 0.45 2.06 18 1 .06 .2 .6 BIT 1.6 97 JAN 6 2046 0.45 36 26.75 121 0.56 2.48 9 .04 .3 .5 BIT 1.5 97 JAN 6 2113 45.82 39 17.00 123 13.52 6.06 16 .16 .4 2.0 MAA 1.6 97 JAN 6 2137 41.67 36 13.74 120 16.36 5.27 10 2 .13 1.9 5.0 COA 1.9 97 JAN 6 2139 6.75 36 38.94 120 50.70 5.05 8 .04 .6 1.3 ORT 2.0 97 JAN 6 2215 40.43 40 46.76 125 18.99 5.01 47 .13 2.110.5 DEL - 3.7 97 JAN 6 2239 21.19 36 56.44 121 25.56 7.71 21 1 .09 .3 .7 HOL 1.3 97 JAN 7 58 9.78 38 49.05 122 48.42 4.35 7 .01 .4 .7 GEY 1.0 97 JAN 7 403 1.87 37 39.18 119 23.15 6.92 7 1 .06 1.0 8.7 KAI - 1.6 97 JAN 7 734 51.54 36 44.61 121 26.18 5.97 61 3 .21 .2 .5 SJB 2.7 97 JAN 7 740 57.08 36 45.33 121 25.81 6.32 18 1 .14 .4 .7 SJB 1.3 97 JAN 7 1017 0.15 40 22.50 125 25.08 26.36 15 1 .38 8.430.6 MEN - 2.9 97 JAN 7 1049 12.26 38 48.83 122 48.09 3.63 12 .05 .3 .6 GEY 1.5 97 JAN 7 1053 10.67 36 55.74 121 28.31 3.69 18 1 .12 .3 .8 BUS 1.2 97 JAN 7 1302 46.57 38 47.02 122 47.07 1.58 7 .03 .3 .9 GEY 1.2 97 JAN 7 1509 30.68 36 48.55 121 2.21 3.20 8 .05 .3 8.9 ORT - 1.2 97 JAN 7 1532 48.05 38 47.14 122 45.43 1.70 8 .03 .3 .8 GEY 1.3 97 JAN 7 1635 42.59 37 38.27 118 58.94 7.11 24 2 .08 .3 .5 SMO 2.4 97 JAN 7 1918 35.64 36 32.52 121 7.85 6.31 23 .06 .2 .7 PIN 1.7 97 JAN 7 2151 25.36 38 49.36 122 48.35 3.19 7 .03 .3 3.0 GEY 1.2 97 JAN 8 133 38.25 40 22.54 124 29.92 17.37 11 .06 2.1 .2 MEN 2.8 97 JAN 8 422 9.52 36 35.73 121 11.86 7.55 51 .07 .1 .4 PIN 2.5 97 JAN 8 703 52.79 38 49.07 122 48.52 3.50 18 .05 .2 .4 GEY 1.7 97 JAN 8 710 32.25 38 0.91 118 45.74 7.08 16 .08 3.0 5.6 MOL 1.7 97 JAN 8 731 56.23 36 44.37 120 57.55 0.88 32 .17 .310.7 ORT## 1.9 97 JAN 8 929 0.10 38 2.31 118 45.45 5.41 18 .07 1.4 4.0 MOL 2.1 97 JAN 8 1111 48.62 36 28.42 120 59.29 0.02 12 .18 1.0 1.3 BIT # 1.1 97 JAN 8 1252 2.80 36 27.61 121 0.67 4.36 15 .05 .4 .6 BIT .9 97 JAN 8 1723 36.68 39 0.57 123 4.22 0.46 7 .01 .6 1.5 MAA 1.5 --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 97 JAN 8 1818 7.89 38 51.44 123 12.92 1.40 11 .05 1.2 7.4 PAR - 2.0 97 JAN 8 2327 46.94 38 49.31 122 48.56 3.83 15 .04 .2 .5 GEY 1.6 97 JAN 9 331 51.94 38 41.01 119 40.09 0.08 25 .35 1.5 2.5 WAK # 2.9 97 JAN 9 349 49.98 38 48.43 122 48.81 3.84 8 .03 .3 .7 GEY 1.6 97 JAN 9 350 6.62 37 26.90 121 48.01 6.10 7 .04 .4 .9 ALU 1.0 97 JAN 9 646 31.85 37 34.77 118 51.47 6.53 12 .07 .7 .5 MOR 1.5 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 ------------------------------------------------------------------------------ DEC 30 002703.6 51.468N 176.211W 33N 4.2 1.3 27 ANDREANOF IS.,ALEUT.IS.ML 4.3 030345.1 39.204N 9.110W 10G 0.4 10 PORTUGAL. mbLg 3.6 (MDD). 043913.0* 13.285N 125.602E 33N 4.5 1.3 12 PHILIPPINE ISLANDS REGION 084226.8* 37.379N 20.650E 33N 3.3 1.1 19 IONIAN SEA 100129.5* 36.172N 139.868E 86* 3.7 1.1 6 EASTERN HONSHU, JAPAN 101901.7* 44.407N 150.056E 33N 3.7 1.6 14 EAST OF KURIL ISLANDS 140334.2? 16.87 S 173.71 W 33N 4.5 1.3 12 TONGA ISLANDS 190616.8 11.335S 166.087E 100G 5.1 1.1 64 SANTA CRUZ ISLANDS 230640.1* 28.743N 130.143E 33N 3.5 1.2 18 RYUKYU ISLANDS 231408.3* 17.311N 146.201E 100G 4.8 1.5 15 MARIANA ISLANDS 232148.3 61.777N 154.338W 10G 0.9 41 SOUTHERN ALASKA. ML 3.3 DEC 31 004739.5? 31.78 S 69.83 W 150G 0.4 10 SAN JUAN PROV., ARGENTINA. MD 3.4 063950.0* 9.668N 126.452E 33N 4.7 0.9 19 MINDANAO, PHILIPPINE ISLANDS 121446.2 38.763N 72.146E 33N 4.6 1.2 23 TAJIKISTAN 134936.4 21.686N 143.074E 320* 4.6 1.2 38 MARIANA ISLANDS REGION 140621.9 34.299N 37.114W 10G 4.4 0.6 23 NORTHERN MID-ATLANTIC RIDGE 151436.7 6.883S 126.950E 405* 5.0 0.9 38 BANDA SEA 151555.8 58.918N 152.197W 31* 1.0 17 KODIAK ISLAND REGION. ML 3.7 164200.8& 65.520N 148.620W 9 30 NORTHERN ALASKA. . ML 3.3 174447.1% 40.423N 8.384W 10G 0.6 7 PORTUGAL. mbLg 3.5 (MDD). 233925.7 53.394N 142.734E 33N 4.8 0.8 34 SAKHALIN ISLAND 235333.5* 28.066N 143.510E 33N 4.0 1.8 24 BONIN ISLANDS REGION 235740.7 34.357N 37.265W 10G 5.3 5.0 0.7 62 NORTHERN MID-ATLANTIC RIDGE JAN 01 023221.2? 15.54 S 173.27 W 33N 4.0 1.0 19 TONGA ISLANDS 033044.6 30.235N 68.109E 33N 4.5 0.9 23 PAKISTAN 035358.3% 33.292S 71.913W 20G 0.4 10 NEAR COAST-CENTRAL CHILE. MD 3.8 043552.0 6.767N 72.984W 164D 5.3 0.9 97 NORTHERN COLOMBIA 052800.8 15.125S 75.667W 33N 4.5 0.9 34 NEAR COAST OF PERU 054922.3 34.378N 37.315W 10G 4.7 1.2 44 NORTHERN MID-ATLANTIC RIDGE 103851.0 34.784N 25.245E 33N 4.0 0.9 23 CRETE 114456.5 34.410N 37.330W 10G 4.5 4.7 1.0 48 NORTHERN MID-ATLANTIC RIDGE 125403.9% 32.858S 71.363W 50G 0.4 10 NEAR COAST-CENTRAL CHILE. MD 3.7 161853.4* 52.164N 176.035W 88 3.7 0.8 20 ANDREANOF ISLANDS, ALEUTIAN IS. 165242.4? 13.94 N 92.28 W 33N 4.4 0.9 14 OFF COAST OF CHIAPAS, MEXICO 175243.8* 10.586N 63.304W 33N 3.5 1.4 8 NEAR COAST OF VENEZUELA. MD 3.4 180703.4* 8.449S 157.481E 33N 4.2 1.0 12 SOLOMON ISLANDS 193242.8? 16.58 N 94.22 W 33N 3.8 1.6 14 OAXACA, MEXICO 195707.2* 23.650S 179.843E 550G 5.0 0.8 12 SOUTH OF FIJI ISLANDS 203406.3? 47.94 N 152.74 E 33N 4.5 1.5 9 KURIL ISLANDS 222701.1& 46.771N 120.459W 19 46 WASHINGTON. . MD 3.7 JAN 02 025751.7 23.824S 179.955W 500G 4.9 0.7 71 SOUTH OF FIJI ISLANDS 101819.4 23.992S 66.732W 200G 4.2 0.8 18 JUJUY PROV., ARGENTINA 103938.6% 34.429S 70.462W 10G 0.3 10 CHILE-ARGENTINA BORDER. MD 3.5 105234.9 10.578N 92.748E 33N 5.1 1.2 55 ANDAMAN ISLANDS, INDIA 111146.4 35.546N 135.651E 357 4.5 1.1 89 WESTERN HONSHU, JAPAN 123114.5* 0.405N 126.479E 45? 5.2 1.2 35 NORTHERN MOLUCCA SEA 152222.2 37.743N 21.070E 33N 4.5 1.7 47 SOUTHERN GREECE. ML 4.6 174022.1 60.380N 149.519W 33N 0.7 86 KENAI PENINSULA, ALASKA. ML 3.5 (PMR), 3.4 (AEIC). Felt at Cooper Landing, Moose Pass and Seward. 182021.5* 14.183S 166.702E 33N 5.3 5.2 0.9 22 VANUATU ISLANDS 190358.4& 45.863N 118.181W 8 23 OREGON.. MD 2.9 200854.0* 4.305S 143.692E 33N 4.7 0.9 27 NEW GUINEA, PAPUA NEW GUINEA 205840.3 31.945S 67.304W 150G 0.8 16 SAN JUAN PROV., ARGENTINA. MD 4.7 213021.0* 0.700N 123.959E 33N 5.4 1.8 28 MINAHASSA PENINSULA, SULAWESI 223608.3 38.977N 123.071W 5G 1.2 59 NEAR COAST OF NORTHERN CALIF. ML 3.8 (GS). Felt in the epicentral area. JAN 03 000038.1 34.421N 32.033E 10G 4.6 0.4 20 CYPRUS REGION 001101.7% 34.422S 70.453W 10G 0.3 10 CHILE-ARGENTINA BORDER. MD 3.6 022217.9 13.401N 88.358W 177D 5.3 1.0 50 EL SALVADOR 035822.0 19.014S 174.971W 138D 5.6 0.6 78 TONGA ISLANDS. Mw 6.0 215128.8 61.086N 167.443E 10G 5.6 4.9 0.9 124 EASTERN SIBERIA, RUSSIA JAN 04 022754.5 63.106N 150.469W 33N 1.2 10 CENTRAL ALASKA. ML 3.1 (PMR). 033603.6 12.488N 89.103W 33N 4.9 0.9 50 OFF COAST-CENTRAL AMERICA 095907.5* 7.139S 122.567E 592 5.2 1.3 29 FLORES SEA 112145.1 29.687S 71.344W 33N 4.9 0.6 27 NEAR COAST-CENTRAL CHILE 132931.3* 7.513S 128.740E 150G 5.5 1.0 33 BANDA SEA 145834.9 36.025N 117.596W 5G 0.7 53 CALIFORNIA-NEVADA BORDER. ML 4.0 152527.1 36.015N 117.576W 5G 0.9 46 CALIFORNIA-NEVADA BORDER. ML 3.5 165109.3* 18.040S 178.357W 600G 4.7 0.8 30 FIJI ISLANDS REGION 184452.4* 12.515N 88.880W 33N 5.0 0.8 41 OFF COAST-CENTRAL AMERICA 184946.1 36.102N 117.728W 5G 1.5 11 CALIFORNIA-NEVADA BORDER. ML 2.6 JAN 05 084725.5* 29.920N 80.487E 33N 5.6 5.3 0.8 72 NEPAL-INDIA BORDER. Extensive damage in the Khalanga Bazzar area. Felt strongly in much of western Nepal. 103419.5* 24.674N 122.390E 33N 5.2 4.9 0.7 25 TAIWAN REGION 122927.8* 5.689S 154.617E 126D 5.2 1.1 21 SOLOMON ISLANDS 182757.4 39.627N 120.095W 5G 0.9 21 NORTHERN CALIFORNIA. ML 2.8 JAN 06 052116.1* 11.970S 166.742E 33N 4.9 0.5 17 SANTA CRUZ ISLANDS 221540.2 40.744N 125.366W 23 0.6 41 OFF COAST-NORTHERN CALIF. ML 3.7 232107.0* 21.958S 179.758W 500G 4.5 0.7 21 FIJI ISLANDS REGION JAN 07 021420.5* 34.716N 24.984E 33N 4.9 1.2 37 CRETE 073451.2 36.716N 121.435W 5G 1.0 29 CENTRAL CALIFORNIA. ML 2.8 (GS). 084534.7* 16.521N 98.674W 33N 4.6 0.5 22 NEAR COAST OF GUERRERO, MEXICO 090254.0* 43.085N 142.908E 33N 4.6 0.6 32 HOKKAIDO, JAPAN REGION 221548.6* 58.417N 145.984W 10G 0.8 7 GULF OF ALASKA 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.