Issued: August 11, 1998 Prepared by: Nan Macgregor-Scott No. 30 - 98 The following is a list of significant earthquakes during the time period Augut 3 - 9, 1998 August 3 at 15:39 UTC (07:39 am ADT), ML 4.8, 53 N 57Õ, 162 W 40Õ, depth = 0 km (0 mi): A light earthquake, felt in False Pass, was located south of Alaska about 69 mi (111 km) SSE of False Pass 78 mi (125 km) S of King Cove 85 mi (137 km) S of Cold Bay 127 mi (205 km) E of Akutan 129 mi (208 km) SW of Sand Point August 4 at 02:13 UTC (06:13 pm ADT), ML 4.1, 61 N 48Õ, 150 W 60Õ, depth = 65 km (40 mi): A light earthquake, felt in Anchorage, was located in the Cook Inlet region of Alaska about 13 mi ( 21 km) SSE of Skwentna 32 mi ( 51 km) W of Willow 47 mi ( 75 km) SW of Talkeetna 50 mi ( 81 km) N of Tyonek 54 mi ( 86 km) WNW of Wasilla August 5 at 05:17 UTC (09:17 pm ADT), ML 3.7, 60 N 8Õ, 152 W 55Õ, depth = 128 km (79 mi): A minor earthquake was located in the Cook Inlet region of Alaska about 43 mi ( 70 km) W of Ninilchik 45 mi ( 73 km) NW of Anchor Point 48 mi ( 77 km) ENE of Pedro Bay 49 mi ( 78 km) E of Port Alsworth 53 mi ( 85 km) W of Clam Gulch August 5 at 13:35 UTC (05:35 am ADT), ML 3.7, 63 N 30Õ, 151 W 10Õ, depth = 11 km (7 mi): A minor earthquake was located in the central region of Alaska about 7 mi ( 11 km) WSW of Kantishna 32 mi ( 51 km) W of Eielson Visitor Ctr. 44 mi ( 71 km) SE of Lake Minchumina 69 mi (111 km) W of Cantwell 70 mi (113 km) W of Denali Park entrance August 6 at 15:22 UTC (07:22 am ADT), mb 5.0, 51 N 19Õ, 177 W 21Õ, depth fixed at 33 km (21 mi): A moderate earthquake was located by NEIC in the Andreanof Islands region of Alaska about 49 mi ( 79 km) SW of Adak 148 mi (238 km) WSW of Atka 159 mi (256 km) E of Amchitka 240 mi (386 km) WSW of Amukta Pass 297 mi (478 km) ESE of Buldir Is August 9 at 09:58 UTC (01:58 am ADT), ML 3.9, 52 N 42Õ, 163 W 18Õ, depth = 26 km (16 mi): A minor earthquake was located south of Alaska about 142 mi (229 km) SE of Akutan 149 mi (239 km) S of False Pass 156 mi (252 km) ESE of Unalaska 157 mi (252 km) ESE of Dutch Harbor 168 mi (270 km) SSW of King Cove _____________________________________________________________________________________________________________________________________________________ DATE TIME LATITUDE LONGITUDE DEPTH PREF. RMS SEH SEZ GAP PHASES MIN Q T REGION, OTHER MAGNITUDES, FELT REPORTS AND COMMENTS YR MO DY HR MN SEC DEG MIN DEG MIN KM MAG SEC. KM KM DEG P S DIS _____________________________________________________________________________________________________________________________________________________ 98 8 3 0 16 46.27 58 40.39N 155 20.68W 139.8 2.4 0.11 10.95 12.18 134 11 4 33 D E ALASKA PEN. 98 8 3 0 47 26.93 60 58.06N 147 2.22W 25.5 0.8 0.07 4.88 6.81 104 9 6 10 C E PR WILLIAM SOUND. 98 8 3 1 29 40.39 61 40.55N 150 53.37W 51.2 2.0 0.12 2.33 5.64 86 13 5 25 C E COOK INLET. 98 8 3 2 37 4.89 60 8.31N 153 34.08W 155.6 2.2 0.19 13.64 11.20 93 13 3 26 D E COOK INLET. 98 8 3 3 38 28.95 60 56.31N 147 6.87W 24.0 1.6 0.20 1.59 1.78 52 17 10 7 A E PR WILLIAM SOUND. 98 8 3 8 6 10.53 62 29.81N 149 57.77W 60.2 2.6 0.15 1.78 4.82 57 15 8 19 B E CENTRAL AK. 98 8 3 8 10 32.44 60 3.96N 152 51.51W 100.7 1.9 0.17 7.99 9.86 53 14 5 6 C E COOK INLET. 98 8 3 10 33 22.21 60 6.84N 151 32.58W 48.9 2.5 0.22 2.26 3.75 46 16 5 16 B E KENAI PEN. 98 8 3 10 38 35.12 54 8.27N 162 42.15W 0.0 2.8 0.42 20.31 21.47 211 17 4 93 D E ALASKA PEN. 98 8 3 11 36 26.70 59 28.17N 152 48.64W 84.2 1.9 0.15 5.70 9.47 94 12 6 31 C E COOK INLET. 98 8 3 14 32 3.00 53 55.94N 163 15.44W 15.7 2.8 0.50 13.36 27.40 235 15 8 85 D E UNIMAK IS. 98 8 3 15 39 11.45 53 57.45N 162 39.59W 0.0 4.8 0.50 7.49 17.41 222 17 4 110 D E SOUTH OF AK. 98 8 3 15 49 28.70 59 24.82N 152 51.17W 77.5 2.3 0.13 3.03 8.18 82 14 4 30 C E COOK INLET. 98 8 3 17 25 44.87 63 17.38N 151 8.95W 12.9 2.0 0.16 5.93 8.07 76 11 4 32 C E CENTRAL AK. 98 8 3 17 44 18.83 64 23.91N 147 58.79W 10.7 2.6 0.37 0.85 6.67 68 10 5 50 C E CENTRAL AK. 98 8 3 18 22 15.02 53 56.99N 163 13.94W 16.8 3.0 0.42 11.84 25.47 243 14 6 84 D E UNIMAK IS. 98 8 3 18 57 12.81 60 59.32N 147 29.10W 28.2 1.9 0.14 1.23 2.47 55 16 6 24 A E PR WILLIAM SOUND. 98 8 3 19 15 30.05 59 59.90N 153 4.03W 0.0 -0.3 0.08 1.36 2.10 147 6 7 1 A a COOK INLET. 98 8 3 20 23 22.39 64 45.95N 147 24.16W 14.0 2.3 0.19 1.07 2.82 87 14 5 23 B E CENTRAL AK. 98 8 4 0 4 39.25 61 39.75N 146 25.32W 29.7 1.4 0.29 2.07 5.31 86 15 12 33 C E PR WILLIAM SOUND. 98 8 4 2 13 40.46 61 47.51N 150 59.86W 64.8 4.1 0.22 1.07 2.06 79 18 8 35 A E COOK INLET. 98 8 4 3 13 1.95 60 46.60N 148 48.54W 2.3 1.6 0.25 1.75 2.57 65 15 6 27 B E KENAI PEN. 98 8 4 3 33 21.91 60 22.42N 150 59.93W 44.0 1.8 0.25 1.22 2.38 66 19 17 40 A E KENAI PEN. 98 8 4 7 58 28.99 63 15.84N 151 4.86W 12.3 3.3 0.23 1.26 1.03 101 16 8 33 A E CENTRAL AK. 98 8 4 8 7 12.80 63 15.52N 151 4.11W 5.1 1.7 0.20 1.80 6.95 101 17 6 34 C E CENTRAL AK. 98 8 4 9 18 27.98 54 36.43N 160 55.51W 15.0 2.5 0.25 6.83 10.49 245 11 9 65 D E ALASKA PEN. 98 8 4 12 5 10.27 61 44.77N 149 51.90W 38.5 2.1 0.30 1.21 2.19 57 17 13 11 A E COOK INLET. 98 8 4 14 53 45.07 53 30.56N 165 30.33W 0.0 2.3 0.14 5.99 6.16 254 12 7 68 C E FOX ISLS. 98 8 4 14 54 28.72 58 16.26N 155 6.94W 6.0 1.2 0.12 2.49 2.47 184 10 7 4 A a ALASKA PEN. 98 8 4 17 5 59.81 63 1.52N 149 13.86W 74.8 2.3 0.20 2.24 1.77 51 19 16 21 A E CENTRAL AK. 98 8 4 18 42 49.40 60 1.03N 153 3.25W 0.0 -0.4 0.34 2.08 2.72 94 6 5 2 B a COOK INLET. 98 8 4 18 43 13.45 60 8.71N 153 13.35W 125.1 2.1 0.36 2.77 4.04 101 17 7 11 B E COOK INLET. 98 8 4 20 24 40.27 62 9.84N 149 33.45W 49.3 1.6 0.31 1.41 1.68 51 15 13 46 A E CENTRAL AK. 98 8 4 20 57 49.59 64 49.92N 147 6.47W 0.0 -0.2 0.29 4.07 98.97 244 3 3 13 D E CENTRAL AK. 98 8 4 21 24 23.20 63 22.71N 151 14.99W 8.8 1.8 0.24 2.21 2.17 79 15 9 25 A E CENTRAL AK. 98 8 4 22 2 0.20 64 45.59N 147 26.40W 10.5 1.6 0.15 2.35 6.34 82 7 2 22 C E CENTRAL AK. 98 8 5 0 39 52.41 64 23.91N 147 46.26W 0.0 0.7 0.17 5.66 98.98 130 6 3 28 D E CENTRAL AK. 98 8 5 5 17 34.04 60 7.98N 152 54.52W 127.8 3.7 0.27 2.31 4.73 74 16 5 7 B E COOK INLET. 98 8 5 8 29 44.58 61 22.12N 149 58.11W 43.1 1.5 0.15 3.24 5.34 84 11 6 22 C E COOK INLET. 98 8 5 11 12 6.42 58 8.96N 142 45.18W 10.0G 2.5 0.43 20.33 36.60 204 17 4 220 D E GULF OF ALASKA. 98 8 5 11 42 17.21 63 3.93N 151 2.45W 125.4 2.1 0.26 7.41 9.20 71 12 4 55 C E CENTRAL AK. 98 8 5 12 20 54.49 63 4.59N 149 33.72W 87.2 2.0 0.09 3.04 4.05 64 14 5 12 B E CENTRAL AK. 98 8 5 12 43 10.41 62 53.64N 151 21.66W 105.9 2.0 0.14 4.41 8.60 87 13 7 77 C E CENTRAL AK. 98 8 5 12 48 58.12 63 4.07N 150 56.77W 121.0 2.2 0.11 3.64 7.65 71 12 5 54 C E CENTRAL AK. 98 8 5 13 7 17.92 62 53.86N 150 58.25W 102.9 2.1 0.14 4.75 9.18 89 15 4 66 C E CENTRAL AK. 98 8 5 13 35 52.80 63 29.92N 151 9.50W 10.6 3.7 0.52 2.57 1.23 109 18 9 13 B E CENTRAL AK. 98 8 5 14 54 16.89 60 14.81N 150 35.23W 28.3 2.3 0.14 1.97 8.52 94 15 4 36 C E KENAI PEN. 98 8 5 18 14 13.95 61 48.34N 148 41.38W 17.1 0.8 0.10 5.02 4.88 137 8 4 13 C E PR WILLIAM SOUND. 98 8 5 22 41 42.63 61 30.44N 152 0.61W 93.4 1.8 0.19 9.06 13.08 65 10 4 34 D E COOK INLET. 98 8 6 2 14 28.65 60 29.61N 148 20.44W 5.0 1.3 0.40 1.87 2.55 83 11 5 41 B KENAI PEN. _____________________________________________________________________________________________________________________________________________________ DATE TIME LATITUDE LONGITUDE DEPTH PREF. RMS SEH SEZ GAP PHASES MIN Q T REGION, OTHER MAGNITUDES, FELT REPORTS AND COMMENTS YR MO DY HR MN SEC DEG MIN DEG MIN KM MAG SEC. KM KM DEG P S DIS _____________________________________________________________________________________________________________________________________________________ 98 8 6 2 52 21.66 61 29.33N 146 42.21W 8.3 1.2 0.16 1.60 3.25 129 14 13 42 B E PR WILLIAM SOUND. 98 8 6 4 23 24.67 60 8.92N 153 6.48W 111.0 2.5 0.25 3.47 1.68 98 25 12 10 B E COOK INLET. 98 8 6 7 49 41.52 62 6.42N 148 19.65W 34.0 2.0 0.24 2.30 2.98 61 15 12 33 B E CENTRAL AK. 98 8 6 12 36 47.36 62 3.78N 147 43.02W 29.6 1.6 0.23 2.14 4.62 82 16 13 33 B E CENTRAL AK. 98 8 6 15 22 46.46 51 18.66N 177 20.64W 33.0N 5.0mb R ANDREANOF ISLS. 98 8 6 17 5 0.13 61 50.90N 149 44.71W 40.5 2.3 0.22 1.27 2.73 94 16 9 23 B E COOK INLET. 98 8 6 17 5 15.71 60 33.46N 140 35.62W 73.3 0.9 0.16 6.31 9.10 183 8 3 61 C YAKUTAT BAY. 98 8 6 20 51 7.81 54 5.71N 163 9.89W 57.0 2.7 0.55 6.91 11.01 236 15 6 72 D E UNIMAK IS. 98 8 6 21 26 12.73 60 58.60N 150 26.56W 9.3 1.7 0.30 0.99 1.92 58 23 15 42 A E KENAI PEN. 98 8 6 22 9 41.24 59 32.05N 152 30.23W 77.0 2.4 0.24 1.42 2.85 86 22 18 43 B E COOK INLET. 98 8 6 23 4 3.61 62 3.47N 147 58.30W 37.3 2.8 0.30 0.94 1.61 54 17 14 34 A E CENTRAL AK. 98 8 7 5 30 2.93 61 33.98N 147 47.46W 11.6 1.8 0.17 1.24 2.02 54 15 5 39 A E PR WILLIAM SOUND. 98 8 7 6 21 51.73 60 33.28N 145 27.05W 4.0 1.6 0.19 5.09 4.10 108 16 5 14 C E PR WILLIAM SOUND. 98 8 7 6 26 20.42 62 3.40N 147 32.37W 35.1 1.1 0.25 7.04 9.83 78 13 5 27 C E CENTRAL AK. 98 8 7 8 8 2.30 59 53.48N 149 34.43W 7.0 2.9 0.37 5.27 3.92 137 16 4 25 C E KENAI PEN. 98 8 7 8 10 27.35 53 22.21N 167 20.17W 6.6 2.2 0.37 35.50 19.60 334 10 6 56 D E FOX ISLS. 98 8 7 12 25 36.13 54 12.45N 163 5.08W 3.0 2.3 0.19 5.08 3.52 225 14 6 65 C E UNIMAK IS. 98 8 7 13 5 26.92 60 2.05N 153 4.15W 0.0 -0.6 0.06 0.85 2.28 115 6 8 3 A a COOK INLET. 98 8 7 15 8 19.36 60 39.13N 141 44.51W 12.0 1.1 0.17 3.71 6.65 91 9 5 33 C E YAKUTAT BAY. 98 8 7 17 3 43.51 59 51.88N 152 2.78W 74.0 2.3 0.20 5.33 11.49 71 12 5 32 D E COOK INLET. 98 8 7 17 23 50.34 64 47.45N 149 2.00W 20.1 0.7 0.38 7.79 5.80 137 7 4 24 C E CENTRAL AK. 98 8 7 20 47 7.40 58 5.66N 156 30.01W 2.0 2.3 0.23 2.28 1.81 315 10 7 41 A E ALASKA PEN. 98 8 7 22 47 22.04 59 57.15N 153 30.05W 136.5 2.6 0.17 5.19 8.25 75 14 6 24 C E COOK INLET. 98 8 7 22 58 4.67 65 11.56N 147 21.42W 0.0 1.3 0.15 12.06 33.50 249 9 4 23 D E N CENTRAL AK. 98 8 8 0 1 48.98 62 13.13N 147 36.85W 49.9 1.9 0.23 2.06 3.06 99 17 9 46 B E CENTRAL AK. 98 8 8 7 40 24.32 63 49.36N 146 33.20W 0.0 2.3 0.34 1.26 10.13 114 15 6 60 D E CENTRAL AK. 98 8 8 9 53 20.74 62 3.90N 150 36.37W 68.4 2.5 0.20 1.02 1.83 75 15 12 42 A E CENTRAL AK. 98 8 8 13 21 47.28 63 32.54N 150 54.36W 5.9 1.3 0.20 4.07 1.88 138 9 4 1 B E CENTRAL AK. 98 8 8 14 23 27.84 62 56.05N 150 33.55W 93.4 2.1 0.20 1.30 2.78 74 16 7 47 B E CENTRAL AK. 98 8 8 15 21 7.11 61 42.16N 150 50.43W 53.9 1.5 0.28 1.00 2.45 75 14 8 27 A E COOK INLET. 98 8 8 20 12 31.68 61 23.35N 147 41.79W 28.7 2.4 0.19 0.58 2.23 61 15 12 23 A E PR WILLIAM SOUND. 98 8 8 20 33 8.38 63 3.16N 149 40.90W 88.6 2.6 0.23 1.40 2.44 65 15 12 9 A E CENTRAL AK. 98 8 8 22 30 48.43 60 49.93N 150 11.74W 39.5 2.4 0.32 0.91 1.88 42 24 14 22 A E KENAI PEN. 98 8 8 23 30 8.96 61 6.72N 152 8.88W 116.0 2.6 0.26 4.49 4.26 98 17 8 9 B E COOK INLET. 98 8 8 23 38 54.92 58 26.68N 152 40.60W 38.3 2.6 0.21 2.92 4.61 108 16 8 25 B E KODIAK IS REG. 98 8 9 0 19 39.23 54 16.67N 160 57.70W 20.0 3.0 0.42 16.55 40.61 253 14 6 94 D E ALASKA PEN. 98 8 9 2 35 54.18 61 57.00N 147 52.72W 37.7 2.0 0.18 3.19 6.14 67 14 10 29 C E PR WILLIAM SOUND. 98 8 9 5 5 25.51 63 8.28N 151 12.80W 12.9 1.7 0.33 6.94 5.13 99 16 5 49 C E CENTRAL AK. 98 8 9 5 50 4.26 61 19.52N 147 37.11W 31.2 2.0 0.09 1.19 5.48 62 15 7 18 C E PR WILLIAM SOUND. 98 8 9 6 30 0.86 61 20.10N 149 30.35W 43.3 1.6 0.12 1.67 2.65 61 11 5 10 B E COOK INLET. 98 8 9 7 28 56.93 60 23.34N 151 42.90W 48.7 1.9 0.29 3.93 9.90 50 15 5 43 C E KENAI PEN. 98 8 9 9 58 9.22 52 42.20N 163 18.41W 25.8 3.9 0.33 34.14 96.35 284 16 7 223 D E SOUTH OF AK. 98 8 9 15 9 19.76 53 9.20N 164 31.55W 25.4 3.1 0.21 11.92 99.00 260 13 4 132 D E UNIMAK IS. 98 8 9 18 27 32.10 60 40.96N 151 33.89W 50.2 1.3 0.40 5.54 11.24 51 14 6 19 D E KENAI PEN. 98 8 9 18 53 51.77 61 34.76N 147 34.96W 38.3 1.8 0.21 3.45 6.50 87 15 10 31 C E PR WILLIAM SOUND. 98 8 9 21 36 47.71 60 48.59N 152 33.87W 103.5 1.6 0.25 15.92 16.38 100 11 4 28 D E COOK INLET. 98 8 9 23 13 10.13 63 27.11N 151 7.55W 11.3 2.3 0.23 3.04 3.01 79 11 3 15 B E CENTRAL AK.