ssued: October 30, 1998 Prepared by: Lalitha Rao No. 41- 98 The following is a list of significant earthquakes during the time period October 19 - 25, 1998 October 19 at 13:34 UTC (05:34 am ADT), mb 4.0, 53 N 53', 163 W 44', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Unimak Island region of Alaska about 69 mi (111 km) SSW of False Pass 85 mi (136 km) ESE of Akutan 100 mi (160 km) SSW of Cold Bay 100 mi (161 km) SW of King Cove 114 mi (183 km) E of Dutch Harbor October 20 at 01:06 UTC (Oct.19, 05:06 pm ADT), ML 4.1, 60 N 3', 140 W 13', depth = 7 km (4 mi): A light earthquake was located in the Yakutat Bay region of Alaska about 40 mi ( 64 km) NNW of Yakutat 51 mi ( 82 km) E of Icy Bay 76 mi (123 km) E of Cape Yakataga 86 mi (139 km) SSW of Burwash Landing 104 mi (168 km) WSW of Haines Junction October 20 at 03:47 UTC (Oct.19, 07:47 pm ADT), mb 4.0, 51 N 24', 173 W 51', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 57 mi ( 91 km) SSE of Atka 103 mi (165 km) SW of Amukta Pass 125 mi (202 km) ESE of Adak 237 mi (381 km) WSW of Nikolski 309 mi (498 km) E of Amchitka October 24 at 04:03 UTC (Oct.23, 07:03 pm AST), ML 4.3, 61 N 31', 149 W 51', depth = 58 km (36 mi): A light earthquake, felt at Anchorage, Palmer, and Wasilla, was located in the Cook Inlet region of Alaska about 14 mi ( 23 km) WSW of Wasilla 15 mi ( 24 km) NW of Chugiak 16 mi ( 26 km) NW of Eagle River 17 mi ( 28 km) SSE of Willow 18 mi ( 30 km) N of Elmendorf AFB October 25 at 14:27 UTC (06:27 am ADT), mb 4.5, 52 N 23', 169 W 36', depth = 64 km (40 mi): A light earthquake was located by NEIC in the Fox Islands region of Alaska about 49 mi ( 79 km) SW of Nikolski 102 mi (164 km) E of Amukta Pass 164 mi (264 km) SW of Unalaska 165 mi (266 km) SW of Dutch Harbor 196 mi (315 km) E of Atka October 25 at 19:08 UTC (11:08 am ADT), mb 4.3, 52 N 11', 169 W 27', depth = 88 km (55 mi): A light earthquake was located by NEIC in the Fox Islands region of Alaska about 57 mi ( 92 km) SSW of Nikolski 109 mi (175 km) E of Amukta Pass 168 mi (271 km) SW of Unalaska 170 mi (273 km) SW of Dutch Harbor 202 mi (325 km) E of Atka October 25 at 19:53 UTC (10:53 am ADT), mb 4.2, 52 N 22', 169 W 31', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Fox Islands region of Alaska about 48 mi ( 77 km) SW of Nikolski 105 mi (170 km) E of Amukta Pass 162 mi (261 km) SW of Unalaska 163 mi (263 km) SW of Dutch Harbor 198 mi (318 km) SW of Akutan October 25 at 20:32 UTC (12:32 am ADT), mb 4.4, 52 N 35', 169 W 31', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Fox Islands region of Alaska about 37 mi ( 59 km) SW of Nikolski 106 mi (171 km) E of Amukta Pass 153 mi (246 km) SW of Unalaska 154 mi (248 km) SW of Dutch Harbor 189 mi (304 km) WSW of Akutan _____________________________________________________________________________________________________________________________________________________ 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 10 19 2 4 16.23 60 3.54N 140 40.84W 7.3 3.0 0.43 1.33 1.00 147 15 11 24 A E YAKUTAT BAY. 98 10 19 3 36 14.93 60 1.73N 153 4.90W 0.0 -0.3 0.09 2.09 12.92 140 7 5 2 D a COOK INLET. 98 10 19 5 3 32.71 59 48.77N 139 41.45W 0.1 3.5 0.20 46.87 39.50 309 14 7 157 D E YAKUTAT BAY. 98 10 19 9 3 6.05 63 51.60N 148 53.12W 12.2 2.1 0.35 0.86 1.26 69 16 11 14 A E CENTRAL AK. 98 10 19 9 6 19.65 63 3.72N 151 0.10W 133.1 2.4 0.15 2.18 3.86 96 16 7 55 B E CENTRAL AK. 98 10 19 11 33 28.65 61 31.84N 146 41.79W 37.1 1.7 0.48 0.70 2.08 68 16 10 42 A E PR WILLIAM SOUND. 98 10 19 13 34 54.51 53 52.50N 163 44.40W 33.0N 4.0mb R UNIMAK IS. 98 10 19 16 28 41.34 61 27.32N 149 52.92W 30.3 1.6 0.41 1.31 2.00 81 15 12 22 A E COOK INLET. 98 10 19 17 18 21.30 63 25.20N 151 8.51W 0.0 1.2 0.12 4.50 23.24 208 5 3 18 D E CENTRAL AK. 98 10 19 19 16 6.37 61 25.49N 147 18.22W 12.9 2.3 0.38 0.79 2.19 56 13 10 37 A E PR WILLIAM SOUND. 98 10 20 0 46 56.94 61 15.89N 151 54.54W 93.7 1.5 0.43 25.11 8.08 149 6 4 7 D E COOK INLET. 98 10 20 1 6 11.49 60 3.22N 140 13.48W 6.8 4.1 0.31 4.37 7.89 163 17 11 63 C E YAKUTAT BAY. 98 10 20 1 8 48.29 63 13.34N 149 39.67W 93.2 2.2 0.20 1.65 1.52 102 15 7 27 A E CENTRAL AK. 98 10 20 2 13 11.32 63 23.20N 149 29.43W 109.8 2.3 0.19 2.00 3.64 80 17 11 32 B E CENTRAL AK. 98 10 20 3 47 57.11 51 24.12N 173 50.58W 33.0N 4.0mb R ANDREANOF ISLS. 98 10 20 4 59 0.25 61 14.73N 146 51.15W 15.4 2.3 0.29 0.68 1.74 53 17 11 25 A E PR WILLIAM SOUND. 98 10 20 6 11 12.36 60 23.15N 152 1.33W 90.1 2.2 0.14 2.26 4.15 53 17 9 30 B E COOK INLET. 98 10 20 11 12 19.70 63 17.01N 151 8.55W 13.6 2.1 0.29 2.15 1.93 174 15 5 32 A E CENTRAL AK. 98 10 20 13 13 48.49 61 37.76N 149 29.60W 33.4 1.8 0.32 1.20 1.18 58 16 13 20 A E COOK INLET. 98 10 20 15 26 18.05 61 46.42N 151 49.72W 102.1 2.7 0.23 1.56 2.93 66 16 10 45 B E COOK INLET. 98 10 20 16 35 17.04 63 53.78N 150 23.80W 17.4 1.9 0.29 1.95 1.80 185 10 7 46 A E CENTRAL AK. 98 10 20 19 9 32.12 63 15.12N 150 34.02W 139.9 2.0 0.17 3.48 3.01 162 15 6 26 B E CENTRAL AK. 98 10 20 19 31 22.46 60 57.09N 150 27.42W 53.0 2.4 0.43 1.18 2.42 67 17 10 5 A E KENAI PEN. 98 10 20 20 10 25.59 54 19.39N 162 23.31W 0.0 3.3 0.47 5.13 3.03 257 16 7 72 C E ALASKA PEN. 98 10 20 20 44 56.54 60 2.16N 153 5.17W 0.0 0.2 0.14 0.69 1.72 139 7 6 3 A a COOK INLET. 98 10 20 21 16 2.45 63 12.25N 151 18.40W 11.0 3.0 0.31 1.73 1.33 103 16 7 43 A E CENTRAL AK. 98 10 21 1 34 18.40 61 20.64N 152 16.01W 0.0 2.3 0.28 0.99 1.23 57 20 10 9 A E COOK INLET. 98 10 21 2 20 32.91 59 51.22N 153 21.88W 133.0 2.5 0.16 2.43 2.73 73 24 14 20 B E COOK INLET. 98 10 21 7 7 2.73 54 51.15N 159 17.53W 0.0 3.1 0.21 6.98 2.28 259 15 11 56 C E SOUTH OF AK. 98 10 21 13 3 49.52 59 2.94N 152 48.94W 68.9 2.4 0.26 1.02 1.72 94 25 16 47 A E COOK INLET. 98 10 21 14 44 25.79 58 56.53N 152 10.70W 69.6 2.7 0.28 1.22 3.30 110 24 17 39 B E KODIAK IS REG. 98 10 21 14 52 52.38 60 42.03N 147 25.98W 9.1 2.1 0.33 0.96 1.81 75 19 8 27 A E PR WILLIAM SOUND. 98 10 21 19 48 55.14 63 22.59N 145 35.28W 4.6 2.3 0.14 1.16 2.52 89 15 9 9 B E E CENTRAL AK. 98 10 21 20 33 1.17 63 33.43N 153 15.59W 5.8 3.2 0.51 5.65 5.74 219 16 5 116 C E CENTRAL AK. 98 10 21 21 31 5.62 61 40.58N 151 27.72W 10.9 1.6 0.36 2.16 1.45 88 15 12 48 A E COOK INLET. 98 10 22 5 19 53.06 61 18.51N 152 14.82W 0.0 -0.1 0.12 0.68 3.53 146 9 7 5 B a COOK INLET. 98 10 22 5 20 29.29 61 43.39N 149 48.56W 37.0 1.6 0.24 1.39 3.19 79 16 11 9 B E COOK INLET. 98 10 22 6 19 14.12 61 29.79N 146 39.53W 19.8 2.8 0.16 0.66 7.94 53 18 9 39 C E PR WILLIAM SOUND. 98 10 22 10 32 54.68 63 29.59N 151 4.17W 16.6 2.8 0.38 1.98 1.07 172 17 9 10 A E CENTRAL AK. 98 10 22 11 18 53.42 55 16.71N 161 22.69W 91.5 2.1 0.15 6.45 4.20 155 14 10 28 C E ALASKA PEN. 98 10 22 14 20 45.72 63 27.34N 151 4.73W 12.0 2.4 0.25 2.01 1.75 106 16 6 13 A E CENTRAL AK. 98 10 22 16 17 59.75 60 24.61N 152 38.96W 109.8 2.4 0.33 2.26 2.44 100 18 7 8 A E COOK INLET. 98 10 22 16 27 43.17 66 49.11N 146 55.99W 9.7 3.3 0.32 3.64 2.78 158 15 8 80 B E N CENTRAL AK. 98 10 22 16 38 56.49 53 37.11N 163 24.53W 33.5 3.7 0.29 5.58 98.98 262 19 7 122 D E UNIMAK IS. 98 10 22 18 39 55.75 61 47.53N 151 35.03W 101.0 1.2 0.24 7.65 9.01 153 9 3 58 C E COOK INLET. 98 10 22 19 21 49.35 60 58.20N 146 28.79W 15.3 0.7 0.20 3.21 3.99 112 9 5 11 B E PR WILLIAM SOUND. 98 10 22 23 14 57.06 60 49.37N 144 36.22W 19.1 1.7 0.27 1.12 6.73 66 14 4 49 C E CAPE YAKATAGA. 98 10 23 2 15 3.09 61 27.91N 147 25.32W 29.0 1.3 0.19 0.71 3.74 58 15 10 36 B E PR WILLIAM SOUND. 98 10 23 6 38 53.07 60 55.05N 147 10.80W 25.0 1.0 0.19 1.45 1.12 133 9 5 6 A E PR WILLIAM SOUND. 98 10 23 10 30 30.08 61 6.07N 152 12.08W 109.5 2.2 0.18 5.46 5.93 112 15 3 13 C E COOK INLET. _____________________________________________________________________________________________________________________________________________________ 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 10 23 10 30 30.73 61 5.01N 152 8.14W 102.1 1.6 0.23 3.38 4.27 74 17 5 12 B E COOK INLET. 98 10 23 10 46 43.53 60 23.80N 146 56.11W 10.9 1.2 0.16 2.04 3.58 229 8 4 41 B E PR WILLIAM SOUND. 98 10 23 13 3 17.25 59 36.15N 148 24.84W 5.0 1.9 0.30 7.00 6.30 230 15 4 58 C E KENAI PEN. 98 10 23 16 14 7.80 62 9.39N 150 55.12W 46.8 1.4 0.50 5.04 6.60 141 9 5 44 C E CENTRAL AK. 98 10 23 21 14 57.71 63 36.30N 151 6.48W 46.7 1.5 0.05 7.12 6.58 280 4 2 11 C E CENTRAL AK. 98 10 24 0 5 33.09 64 55.44N 147 21.00W 14.4 0.4 0.22 2.69 4.55 142 6 4 7 B E CENTRAL AK. 98 10 24 3 42 24.47 61 45.05N 149 46.96W 9.3 2.2 0.15 0.96 3.73 54 15 9 63 B E COOK INLET. 98 10 24 3 56 44.79 61 1.45N 149 53.79W 37.6 3.1 0.42 1.04 1.87 73 12 4 19 A E COOK INLET. 98 10 24 4 3 50.81 61 30.79N 149 50.53W 58.1 4.3 0.35 0.89 4.11 63 15 5 36 B E COOK INLET. 98 10 24 8 41 4.97 62 58.87N 148 5.62W 68.3 1.9 0.23 2.04 4.45 62 12 5 38 B E CENTRAL AK. 98 10 24 12 35 59.54 62 53.98N 149 38.54W 76.2 1.6 0.25 1.85 2.40 109 14 6 9 A E CENTRAL AK. 98 10 24 12 50 59.39 61 38.45N 146 28.47W 32.4 2.0 0.28 1.02 2.22 54 14 7 34 A E PR WILLIAM SOUND. 98 10 24 14 5 26.60 60 31.47N 151 11.18W 72.0 2.0 0.23 1.49 3.17 82 14 10 25 B E KENAI PEN. 98 10 24 17 2 58.35 59 36.67N 153 11.06W 101.4 2.9 0.14 1.96 2.56 122 15 13 5 B E COOK INLET. 98 10 24 19 44 54.53 60 1.89N 153 7.13W 125.4 2.6 0.28 8.73 3.42 149 18 10 3 C E COOK INLET. 98 10 24 22 37 52.84 53 51.36N 165 23.11W 63.2 3.3 0.14 7.68 5.01 224 15 12 35 C E FOX ISLS. 98 10 25 0 2 0.68 61 0.57N 151 15.79W 67.0 2.3 0.37 1.25 3.01 86 16 11 22 B E COOK INLET. 98 10 25 0 40 20.21 63 12.57N 150 40.87W 138.8 2.4 0.15 2.49 4.31 99 16 5 33 B E CENTRAL AK. 98 10 25 2 19 37.34 61 40.28N 148 1.84W 10.7 1.8 0.29 1.70 3.37 110 15 5 22 B E PR WILLIAM SOUND. 98 10 25 2 20 57.57 59 51.98N 152 36.10W 94.4 1.7 0.25 3.16 4.48 116 13 6 28 B E COOK INLET. 98 10 25 2 32 54.72 63 33.01N 147 53.33W 8.7 2.4 0.36 0.94 1.98 72 17 8 51 A E CENTRAL AK. 98 10 25 9 16 28.79 62 51.47N 150 48.74W 96.4 2.5 0.14 2.17 3.22 83 17 8 58 B E CENTRAL AK. 98 10 25 10 43 44.23 62 2.03N 148 27.87W 36.6 1.7 0.29 4.38 3.07 85 15 8 26 B E CENTRAL AK. 98 10 25 14 27 43.42 52 22.98N 169 36.06W 64.3 4.5mb R FOX ISLS. 98 10 25 19 8 32.79 52 11.40N 169 27.00W 88.2 4.3mb R FOX ISLS. 98 10 25 19 53 35.79 52 22.02N 169 30.72W 33.0N 4.2mb R FOX ISLS. 98 10 25 20 32 31.46 52 34.68N 169 30.78W 33.0N 4.4mb R FOX ISLS.