Issued: September 29, 1998 Prepared by: Lalitha Rao No. 37 - 98 The following is a list of significant earthquakes during the time period September 21 - 27, 1998 September 24 at 02:00 UTC (Sept.23 at 06:00 pm ADT), ML 4.1, 57 N 51', 170 W 11', depth = 6 km (4 mi): A light earthquake was located in the Pribilof Islands region of Alaska about 32 mi ( 51 km) N of St. Paul 39 mi ( 63 km) NW of St. George 188 mi (302 km) SSE of St. Matthew Is 226 mi (364 km) SW of Mekoryuk 259 mi (417 km) SW of Toksook Bay September 26 at 01:48 UTC (Sept.25 at 05:48 pm ADT), ML 4.2, 54 N 43', 159 W 44', depth = 14 km (9 mi): A light earthquake was located south of Alaska about 52 mi ( 84 km) SE of Sand Point 86 mi (138 km) SSW of Perryville 105 mi (169 km) ESE of King Cove 106 mi (170 km) SSE of Nelson Lagoon 121 mi (194 km) SSW of Chignik September 27 at 00:57 UTC (Sept.26 at 04:57 pm ADT), ML 5.0, 61 N 34', 149 W 39', depth = 35 km (22 mi): A moderate earthquake, felt throughout southcentral Alaska, was located in the Cook Inlet region of Alaska about 7 mi ( 12 km) W of Wasilla 14 mi ( 22 km) NNW of Chugiak 17 mi ( 28 km) SE of Willow 18 mi ( 28 km) N of Eagle River 18 mi ( 29 km) SW of Hatcher Pass _____________________________________________________________________________________________________________________________________________________ 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 9 21 0 43 21.89 63 2.89N 150 25.24W 107.9 2.5 0.16 1.54 1.64 66 16 10 40 A E CENTRAL AK. 98 9 21 4 47 18.89 62 0.68N 147 22.98W 35.8 2.9 0.30 0.92 1.93 42 20 16 20 A E CENTRAL AK. 98 9 21 5 15 44.07 60 0.21N 152 34.34W 98.0 2.8 0.27 1.08 2.60 57 27 18 23 B E COOK INLET. 98 9 21 8 55 53.36 63 19.28N 145 25.95W 13.9 1.2 0.16 3.93 7.76 98 6 2 19 C E E CENTRAL AK. 98 9 21 10 15 22.71 60 30.23N 150 28.47W 59.5 2.7 0.63 1.03 2.51 68 21 15 50 B E KENAI PEN. 98 9 21 11 58 37.71 59 54.35N 151 12.07W 42.1 2.9 0.27 1.14 2.21 55 27 18 16 A E KENAI PEN. 98 9 21 12 2 30.37 59 43.43N 152 36.82W 79.6 2.5 0.23 0.87 2.44 69 28 19 36 A E COOK INLET. 98 9 21 12 22 6.63 54 58.59N 160 46.05W 58.2 2.7 0.16 2.47 4.20 174 14 11 40 B E ALASKA PEN. 98 9 21 14 2 26.80 63 14.66N 150 58.37W 0.0 2.1 0.31 1.24 5.43 99 17 9 35 C E CENTRAL AK. 98 9 21 14 42 6.74 54 28.76N 162 13.42W 80.2 3.2 0.16 5.05 4.17 217 14 11 54 C E ALASKA PEN. 98 9 21 16 38 16.23 60 28.26N 152 1.66W 81.4 2.4 0.26 1.87 4.30 51 17 10 39 B E COOK INLET. 98 9 21 16 42 42.27 60 0.53N 140 34.44W 0.0 2.4 0.55 2.56 5.48 153 15 8 20 C E YAKUTAT BAY. 98 9 21 21 9 19.56 60 43.47N 149 45.19W 37.8 2.0 0.25 1.63 4.22 45 17 8 34 B E KENAI PEN. 98 9 22 1 59 8.39 59 27.31N 153 13.24W 1.3 2.6 0.31 1.28 7.03 65 14 6 13 C a COOK INLET. 98 9 22 2 9 7.95 62 57.18N 151 13.23W 124.6 1.9 0.11 8.64 11.52 95 15 4 69 D E CENTRAL AK. 98 9 22 3 28 1.50 60 49.50N 150 42.47W 36.5 1.6 0.11 2.88 6.01 64 13 3 30 C E KENAI PEN. 98 9 22 4 59 57.44 64 41.16N 146 53.49W 8.9 1.2 0.09 3.14 6.94 94 13 4 10 C E CENTRAL AK. 98 9 22 5 12 40.42 61 10.62N 145 15.29W 28.2 1.0 0.17 3.95 29.30 74 13 4 50 D E PR WILLIAM SOUND. 98 9 22 5 17 26.44 59 31.96N 152 13.14W 81.5 2.1 0.15 3.11 6.64 95 13 6 35 C E COOK INLET. 98 9 22 6 27 47.02 59 56.75N 151 46.49W 45.6 2.6 0.11 2.26 6.02 58 13 5 29 C E KENAI PEN. 98 9 22 8 29 50.86 61 42.94N 149 48.29W 38.6 1.2 0.28 5.04 15.45 84 10 5 8 D E COOK INLET. 98 9 22 9 23 0.33 62 16.68N 147 24.79W 51.7 1.8 0.13 3.58 5.75 56 15 7 50 C E CENTRAL AK. 98 9 22 9 39 55.41 53 56.92N 166 10.62W 15.7 1.3 0.21 14.33 25.03 198 10 4 21 D E FOX ISLS. 98 9 22 12 12 45.59 53 56.27N 166 12.49W 13.2 2.5 0.13 3.19 1.79 190 12 12 23 B E FOX ISLS. 98 9 22 12 31 42.93 59 52.65N 153 15.06W 125.4 2.2 0.28 6.25 7.58 68 14 4 14 C E COOK INLET. 98 9 22 12 52 36.99 62 17.59N 148 40.75W 18.0 1.9 0.09 7.35 14.17 70 10 5 57 D E CENTRAL AK. 98 9 22 13 8 27.68 53 56.55N 166 13.28W 10.4 1.7 0.08 6.93 37.67 195 11 5 23 D E FOX ISLS. 98 9 22 14 3 20.58 53 57.13N 166 12.73W 15.0 2.7 0.13 2.74 1.06 191 11 10 22 B E FOX ISLS. 98 9 22 14 13 19.44 53 55.63N 166 11.89W 13.2 2.5 0.10 2.55 1.69 194 12 11 23 B E FOX ISLS. 98 9 22 14 23 32.10 60 59.59N 147 19.45W 22.6 1.9 0.22 1.88 2.20 53 18 5 18 A E PR WILLIAM SOUND. 98 9 22 17 10 44.59 63 16.55N 151 3.58W 6.8 2.4 0.12 3.18 4.83 76 16 5 32 B E CENTRAL AK. 98 9 22 21 55 23.82 60 44.75N 148 55.49W 28.7 1.4 0.06 2.43 5.82 62 11 5 35 C E KENAI PEN. 98 9 22 21 57 45.45 59 1.60N 154 32.99W 138.9 2.1 0.17 14.05 15.78 146 10 3 53 D E COOK INLET. 98 9 22 22 24 15.53 62 26.02N 148 27.87W 10.4 1.4 0.21 5.60 14.07 87 11 6 70 D E CENTRAL AK. 98 9 22 22 54 56.90 59 4.96N 154 19.79W 126.0 3.7 0.20 2.71 5.60 75 13 8 11 C E COOK INLET. 98 9 22 23 4 10.37 61 27.80N 147 28.80W 20.0 2.3 0.17 0.92 5.91 76 18 5 35 C E PR WILLIAM SOUND. 98 9 22 23 28 42.20 60 7.20N 151 53.96W 52.7 2.3 0.16 3.90 9.57 45 17 7 35 C E KENAI PEN. 98 9 23 0 31 28.74 61 46.38N 150 37.39W 55.1 1.8 0.20 1.29 2.72 78 15 8 35 B E COOK INLET. 98 9 23 2 38 29.15 61 25.92N 151 39.92W 74.7 1.8 0.23 5.56 2.93 124 15 8 12 C E COOK INLET. 98 9 23 6 28 21.20 60 7.01N 151 57.79W 57.6 1.6 0.34 1.45 3.66 75 22 11 38 B E KENAI PEN. 98 9 23 7 33 3.16 64 49.65N 147 30.01W 13.6 1.0 0.13 0.81 1.61 83 13 12 18 A E CENTRAL AK. 98 9 23 10 0 27.36 64 32.49N 148 1.32W 23.7 2.1 0.22 0.80 0.54 61 18 14 8 A E CENTRAL AK. 98 9 23 10 19 56.37 61 32.20N 146 38.01W 29.0 2.6 0.26 0.77 3.69 49 18 12 38 B E PR WILLIAM SOUND. 98 9 23 12 10 52.26 63 0.24N 148 3.29W 62.5 2.2 0.14 1.08 1.52 52 16 8 35 A E CENTRAL AK. 98 9 23 12 22 11.90 59 51.06N 152 49.86W 95.7 3.2 0.22 1.08 2.06 58 29 19 18 A E COOK INLET. 98 9 23 13 44 53.85 63 40.32N 149 34.70W 126.2 2.0 0.17 1.55 2.89 106 15 7 33 B E CENTRAL AK. 98 9 23 20 56 35.88 60 53.03N 147 9.30W 21.4 1.8 0.27 0.99 1.38 56 17 7 3 A E PR WILLIAM SOUND. 98 9 23 21 42 57.42 59 24.75N 152 36.05W 77.3 2.6 0.18 1.09 3.33 92 23 16 44 B E COOK INLET. 98 9 24 2 0 44.35 57 51.18N 170 11.47W 6.2 4.1 1.13 99.00 74.32 318 13 4 481 D R PRIBILOF ISLS. 98 9 24 2 24 4.57 54 37.60N 161 31.95W 3.5 2.8 0.16 3.76 3.03 210 14 7 60 B E ALASKA 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 9 24 3 22 33.15 53 52.83N 166 9.96W 4.7 2.8 0.19 1.91 4.20 202 15 7 27 B E FOX ISLS. 98 9 24 4 15 21.95 63 35.86N 149 54.38W 141.7 2.4 0.18 1.80 3.79 62 12 5 25 B E CENTRAL AK. 98 9 24 6 16 1.75 61 24.33N 144 33.70W 34.6 2.2 0.15 2.03 4.23 116 14 5 40 B E CAPE YAKATAGA. 98 9 24 8 45 0.15 55 6.01N 162 5.35W 3.7 1.7 0.12 1.05 12.12 121 9 6 12 D E ALASKA PEN. 98 9 24 9 10 15.64 61 9.41N 148 40.28W 33.4 1.7 0.11 1.17 2.57 67 14 6 31 B E PR WILLIAM SOUND. 98 9 24 10 53 6.51 63 17.72N 151 15.27W 0.0 1.6 0.39 8.60 76.92 178 8 3 33 D E CENTRAL AK. 98 9 24 11 42 28.31 64 47.08N 149 1.84W 0.0 0.6 0.30 5.61 66.23 133 7 4 23 D E CENTRAL AK. 98 9 24 13 5 5.20 64 46.00N 149 5.56W 20.6 1.6 0.13 3.79 2.71 131 12 4 21 B E CENTRAL AK. 98 9 24 13 5 56.33 60 37.92N 147 34.36W 17.6 0.7 0.38 5.49 11.90 80 10 4 38 D E PR WILLIAM SOUND. 98 9 24 14 31 51.66 59 27.22N 152 54.17W 109.3 1.8 0.36 10.74 12.93 78 12 4 28 D E COOK INLET. 98 9 24 14 35 1.20 61 1.82N 147 41.78W 10.0 1.9 0.33 0.80 2.80 97 14 8 17 B E PR WILLIAM SOUND. 98 9 24 15 3 45.72 61 23.29N 147 47.68W 35.3 1.2 0.14 2.04 9.10 108 11 7 23 C E PR WILLIAM SOUND. 98 9 24 15 43 25.85 58 10.73N 155 21.26W 0.0 0.1 0.07 1.77 17.35 83 9 8 4 D a ALASKA PEN. 98 9 24 16 1 14.07 60 39.05N 143 2.79W 10.2 1.7 0.19 1.48 1.51 56 14 9 12 A E CAPE YAKATAGA. 98 9 24 16 3 5.34 60 39.08N 143 1.43W 9.6 1.9 0.20 0.89 0.77 60 15 4 12 A E CAPE YAKATAGA. 98 9 24 16 18 18.64 60 57.51N 150 41.87W 47.6 1.9 0.13 3.51 8.17 68 11 3 38 C E KENAI PEN. 98 9 24 18 1 40.19 64 30.07N 147 52.40W 0.0 0.6 0.13 4.22 98.97 150 7 4 11 D E CENTRAL AK. 98 9 24 18 42 34.82 63 51.49N 148 56.53W 14.0 1.9 0.22 2.38 2.20 81 14 9 14 A E CENTRAL AK. 98 9 24 19 21 57.09 63 2.97N 150 33.56W 109.0 1.7 0.07 11.26 9.79 101 11 5 47 D E CENTRAL AK. 98 9 24 23 0 24.01 58 11.43N 155 19.17W 1.7 1.2 0.04 1.19 3.00 99 9 9 2 B a ALASKA PEN. 98 9 25 0 52 48.94 62 59.89N 151 31.43W 138.2 2.0 0.13 5.26 6.62 195 16 5 69 C E CENTRAL AK. 98 9 25 2 40 2.78 60 54.49N 150 27.19W 30.0 1.9 0.43 1.52 2.30 51 21 11 10 A E KENAI PEN. 98 9 25 3 1 36.93 59 26.94N 152 47.11W 75.8 2.8 0.20 1.41 2.26 82 21 10 34 A E COOK INLET. 98 9 25 4 16 18.11 61 8.43N 151 8.08W 60.2 3.0 0.49 0.90 1.91 49 16 11 7 A E COOK INLET. 98 9 25 4 28 38.36 59 57.09N 151 49.01W 45.3 2.0 0.25 1.06 3.42 103 18 14 31 B E KENAI PEN. 98 9 25 6 10 32.19 61 14.29N 147 46.02W 14.4 0.5 0.14 1.77 0.96 199 4 4 6 A E PR WILLIAM SOUND. 98 9 25 6 32 55.18 63 24.55N 149 36.76W 108.6 2.5 0.21 1.90 2.91 94 18 9 34 B E CENTRAL AK. 98 9 25 10 43 17.99 63 25.79N 149 35.79W 109.0 1.9 0.19 2.16 4.26 109 15 7 35 B E CENTRAL AK. 98 9 25 13 45 11.69 61 23.20N 147 6.53W 1.3 0.7 0.38 3.28 5.18 233 6 4 42 C PR WILLIAM SOUND. 98 9 25 13 45 22.02 61 3.45N 151 47.27W 77.9 1.7 0.18 2.86 4.03 78 16 9 20 B E COOK INLET. 98 9 25 15 52 42.13 61 33.00N 150 37.82W 65.2 3.5 0.47 1.68 2.50 103 15 9 47 A E COOK INLET. 98 9 25 17 1 11.83 60 1.11N 153 5.40W 0.0 -0.4 0.04 21.92 12.73 224 4 3 1 D a COOK INLET. 98 9 25 17 14 35.03 64 46.08N 147 24.01W 12.5 1.7 0.19 0.52 2.34 74 10 8 24 A E CENTRAL AK. 98 9 25 18 53 46.18 62 4.72N 147 29.69W 41.1 2.3 0.41 1.32 1.69 63 15 9 29 A E CENTRAL AK. 98 9 25 19 17 49.10 64 48.06N 146 39.65W 0.0 0.1 0.06 99.00 99.00 360 3 1 11 D E CENTRAL AK. 98 9 25 21 23 44.04 60 41.04N 147 32.30W 14.7 3.4 0.29 1.00 1.86 45 18 9 33 A E PR WILLIAM SOUND. 98 9 25 23 38 19.94 53 55.19N 166 11.33W 10.1 2.9 0.20 1.47 4.51 194 15 14 24 B E FOX ISLS. 98 9 26 0 0 10.73 58 14.10N 155 11.64W 3.7 0.2 0.11 2.15 3.44 136 4 3 1 B a ALASKA PEN. 98 9 26 0 46 24.76 53 56.79N 166 13.49W 9.2 1.4 0.10 10.03 7.49 194 10 5 23 D E FOX ISLS. 98 9 26 1 48 14.55 54 43.21N 159 44.23W 13.9 4.2 0.28 6.89 9.08 251 15 4 39 C E SOUTH OF AK. 98 9 26 1 50 53.35 61 19.91N 151 50.65W 49.4 1.5 0.30 6.67 8.07 79 11 5 9 C E COOK INLET. 98 9 26 2 26 56.67 61 48.18N 148 32.03W 31.0 1.3 0.13 2.68 4.96 88 8 5 11 B E PR WILLIAM SOUND. 98 9 26 7 26 8.76 59 26.56N 153 12.52W 6.3 2.1 0.20 3.51 6.03 68 12 5 12 C E COOK INLET. 98 9 26 8 34 12.43 61 58.32N 146 59.89W 44.2 2.6 0.22 1.92 4.25 93 11 6 23 B E PR WILLIAM SOUND. 98 9 26 9 0 20.15 61 57.56N 147 45.97W 39.6 1.4 0.23 6.00 5.34 115 12 5 27 C E PR WILLIAM SOUND. 98 9 26 11 53 16.08 61 5.34N 148 6.93W 31.1 2.0 0.19 1.19 2.14 52 19 10 22 A E PR WILLIAM SOUND. 98 9 26 12 9 1.68 58 14.89N 155 11.17W 5.0 0.0 0.08 5.28 5.16 129 7 4 1 C a ALASKA PEN. 98 9 26 15 59 48.14 59 53.83N 153 5.92W 117.6 1.8 0.13 12.72 12.83 115 11 4 7 D E COOK INLET. 98 9 26 16 59 33.36 62 13.16N 150 41.53W 9.8 1.8 0.29 3.92 9.97 80 13 6 76 C E CENTRAL AK. 98 9 26 19 38 31.31 60 49.00N 146 46.33W 22.7 1.4 0.24 1.38 1.57 76 16 6 14 A E PR WILLIAM SOUND. _____________________________________________________________________________________________________________________________________________________ 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 9 26 20 11 47.76 61 25.15N 147 40.11W 33.3 1.5 0.07 1.64 3.37 63 16 8 27 B E PR WILLIAM SOUND. 98 9 26 20 59 11.01 62 3.36N 149 28.43W 53.0 1.2 0.32 8.57 15.62 140 10 4 43 D E CENTRAL AK. 98 9 26 21 2 10.46 64 39.60N 146 54.60W 4.8 1.1 0.26 5.26 23.05 179 9 7 12 D E CENTRAL AK. 98 9 26 21 7 36.57 60 29.12N 145 9.63W 12.0 1.6 0.17 4.96 1.95 64 17 8 6 B E PR WILLIAM SOUND. 98 9 26 21 45 56.26 60 4.95N 153 7.86W 120.3 1.7 0.14 8.95 10.77 94 14 3 3 D E COOK INLET. 98 9 26 21 56 12.90 59 54.72N 153 0.49W 114.4 2.0 0.16 6.21 10.26 55 15 4 6 D E COOK INLET. 98 9 26 23 7 41.69 63 26.98N 151 9.05W 11.3 2.1 0.21 6.00 3.07 79 11 3 16 C E CENTRAL AK. 98 9 27 0 6 57.87 63 3.92N 150 18.60W 91.8 1.9 0.24 4.37 5.02 62 18 5 35 C E CENTRAL AK. 98 9 27 0 57 59.99 61 34.09N 149 39.37W 34.8 5.0 0.30 1.18 1.89 59 16 3 15 A E COOK INLET. 98 9 27 2 10 58.54 61 35.28N 149 40.80W 37.0 1.3 0.34 1.21 1.38 71 16 7 13 A E COOK INLET. 98 9 27 3 58 19.65 54 5.66N 164 5.30W 18.8 3.1 0.28 3.13 7.50 221 13 12 53 C E UNIMAK IS. 98 9 27 4 52 12.94 61 35.19N 149 34.07W 31.4 2.6 0.47 0.84 1.23 65 17 13 18 A E COOK INLET. 98 9 27 5 36 41.55 60 45.86N 149 46.86W 31.0 2.5 0.24 1.07 3.76 59 19 10 37 B E KENAI PEN. 98 9 27 6 45 47.58 61 21.79N 149 54.40W 33.0 2.7 0.31 1.71 1.90 62 16 4 20 A E COOK INLET. 98 9 27 7 5 42.66 61 34.40N 149 40.01W 34.2 1.7 0.25 1.18 2.03 69 17 11 14 A E COOK INLET. 98 9 27 7 41 22.89 60 47.24N 147 28.63W 28.1 2.0 0.24 0.68 2.41 65 18 10 23 A E PR WILLIAM SOUND. 98 9 27 13 32 50.24 64 26.95N 147 11.16W 14.7 0.1 0.22 3.82 3.34 163 5 3 12 B E CENTRAL AK. 98 9 27 13 36 16.74 61 37.05N 146 22.62W 27.3 1.9 0.24 1.18 2.30 63 14 7 28 A E PR WILLIAM SOUND. 98 9 27 16 26 54.88 63 3.13N 150 46.15W 115.1 2.2 0.23 2.22 3.11 83 15 8 51 B E CENTRAL AK. 98 9 27 17 2 21.62 63 48.68N 145 32.54W 27.0 1.3 0.42 5.96 55.30 134 9 4 45 D E E CENTRAL AK. 98 9 27 17 22 26.12 53 55.40N 166 11.68W 10.2 2.4 0.22 2.51 7.00 193 15 11 24 C E FOX ISLS. 98 9 27 21 17 30.07 61 38.32N 149 53.15W 58.8 1.3 0.12 2.97 5.43 179 9 6 40 C E COOK INLET. 98 9 27 21 36 13.14 60 23.88N 147 46.45W 11.4 1.4 0.17 1.39 3.31 97 18 10 40 B E PR WILLIAM SOUND. 98 9 27 21 43 13.19 60 58.82N 146 33.11W 17.9 1.5 0.37 1.06 1.17 49 16 7 9 A E PR WILLIAM SOUND.