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Alaska Earthquake History
Since October 9, 1900, the USGS has recorded 5,198 earthquakes of magnitude 4.5 or greater in Alaska, 420 of them magnitude 6 or above. The strongest was M 9.2.
By decade
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Strongest in Alaska
M 9.2 · The 1964 Prince William Sound, Alaska EarthquakeMarch 28, 1964M 8.6 · The 1946 Unimak Island, Alaska EarthquakeApril 1, 1946M 8.2 · 1938 Semidi Islands, Alaska EarthquakeNovember 10, 1938M 8.2 · 2021 Chignik, Alaska EarthquakeJuly 29, 2021M 7.9 · 261 km SE of Chiniak, AlaskaJanuary 23, 2018M 7.9 · 2002 Denali Fault, Alaska EarthquakeNovember 3, 2002M 7.9 · 200 km WSW of Yakutat, AlaskaNovember 30, 1987M 7.9 · Kodiak Island region, AlaskaOctober 9, 1900M 7.8 · 81 km E of Nikolski, AlaskaJuly 2, 1965M 7.8 · 22 km W of Elfin Cove, AlaskaJuly 10, 1958
All recorded earthquakes
M 4.6 mbOctober 2, 1982
163 km S of False Pass, Alaska · depth 33 km
M 4.5 mbSeptember 21, 1982
123 km SSW of Unalaska, Alaska · depth 33 km
M 4.8 mbSeptember 20, 1982
133 km ESE of Nikolski, Alaska · depth 33 km
M 4.7 mbSeptember 18, 1982
Fox Islands, Aleutian Islands, Alaska · depth 33 km
M 5.0 mbSeptember 16, 1982
107 km SSW of Unalaska, Alaska · depth 33 km
M 4.7 mbSeptember 13, 1982
129 km SSW of Unalaska, Alaska · depth 33 km
M 4.8 mbSeptember 13, 1982
136 km ESE of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 12, 1982
155 km ESE of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 12, 1982
151 km ESE of Nikolski, Alaska · depth 33 km
M 5.5 mbSeptember 12, 1982
122 km SSW of Unalaska, Alaska · depth 33 km
M 4.5 mbSeptember 12, 1982
148 km ESE of Nikolski, Alaska · depth 33 km
M 5.2 mbSeptember 12, 1982
138 km S of Unalaska, Alaska · depth 33 km
M 4.7 mbSeptember 12, 1982
157 km ESE of Nikolski, Alaska · depth 33 km
M 4.5 mbSeptember 12, 1982
152 km ESE of Nikolski, Alaska · depth 33 km
M 4.7 mbSeptember 12, 1982
120 km SSW of Unalaska, Alaska · depth 33 km
M 4.8 mbSeptember 12, 1982
162 km ESE of Nikolski, Alaska · depth 33 km
M 5.1 mbSeptember 12, 1982
102 km SSW of Unalaska, Alaska · depth 33 km
M 4.8 mbSeptember 12, 1982
134 km S of Unalaska, Alaska · depth 33 km
M 5.9 msSeptember 12, 1982
133 km ESE of Nikolski, Alaska · depth 33 km
M 4.5 mbSeptember 10, 1982
200 km SE of Chiniak, Alaska · depth 33 km
M 4.5 mbSeptember 7, 1982
100 km SE of Chiniak, Alaska · depth 33 km
M 5.7 mbSeptember 6, 1982
95 km SSE of Chiniak, Alaska · depth 33 km
M 4.7 mbSeptember 4, 1982
140 km S of False Pass, Alaska · depth 33 km
M 4.8 mbSeptember 3, 1982
136 km ESE of Nikolski, Alaska · depth 33 km
M 5.2 mbAugust 30, 1982
74 km SE of King Cove, Alaska · depth 35 km
M 4.7 mbAugust 26, 1982
107 km SSW of False Pass, Alaska · depth 33 km
M 4.7 mbAugust 25, 1982
74 km N of Yakutat, Alaska · depth 15 km
M 5.3 mbAugust 24, 1982
58 km SSE of Akutan, Alaska · depth 33 km
M 5.0 mbAugust 21, 1982
143 km S of False Pass, Alaska · depth 38 km
M 5.2 mbAugust 19, 1982
93 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbAugust 18, 1982
170 km SE of Akutan, Alaska · depth 44 km
M 4.9 mbAugust 12, 1982
116 km ESE of Chignik, Alaska · depth 33 km
M 4.9 mbAugust 10, 1982
68 km ENE of Pedro Bay, Alaska · depth 132 km
M 4.8 mbAugust 7, 1982
northern Alaska · depth 15 km
M 4.7 mbAugust 7, 1982
74 km N of Yakutat, Alaska · depth 15 km
M 5.0 mbJuly 28, 1982
90 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbJuly 28, 1982
90 km SSW of Nikolski, Alaska · depth 33 km
M 4.9 mbJuly 22, 1982
76 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbJuly 22, 1982
172 km SSW of Nikolski, Alaska · depth 33 km
M 4.8 mbJuly 21, 1982
169 km SSE of Chignik, Alaska · depth 33 km
Source: U.S. Geological Survey, Earthquake Hazards Program. Older and smaller earthquakes are under-counted relative to recent decades as instrumentation improved. A record of past shaking is not a forecast. See About the Data.