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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 5.0 mbDecember 29, 1990
146 km SW of Nikolski, Alaska · depth 58 km
M 5.3 mbDecember 28, 1990
49 km S of Cantwell, Alaska · depth 74 km
M 4.8 mbDecember 24, 1990
95 km E of Akutan, Alaska · depth 53 km
M 4.8 mbDecember 16, 1990
90 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbDecember 11, 1990
6 km E of Fox River, Alaska · depth 37 km
M 5.0 mbDecember 7, 1990
6 km ENE of Susitna, Alaska · depth 50 km
M 4.7 mbDecember 5, 1990
77 km SE of Nikolski, Alaska · depth 33 km
M 4.9 mbNovember 26, 1990
21 km SE of Susitna North, Alaska · depth 45 km
M 6.0 mwNovember 21, 1990
206 km ESE of Atka, Alaska · depth 33 km
M 4.8 mbNovember 16, 1990
171 km SW of Nikolski, Alaska · depth 56 km
M 4.6 mbNovember 4, 1990
10 km NW of Port Lions, Alaska · depth 46 km
M 4.6 mbNovember 4, 1990
77 km SSE of Akhiok, Alaska · depth 33 km
M 4.7 mbOctober 20, 1990
107 km SSW of Nikolski, Alaska · depth 33 km
M 4.5 mbSeptember 27, 1990
209 km SW of Yakutat, Alaska · depth 10 km
M 4.6 mbSeptember 21, 1990
6 km NNW of Chickaloon, Alaska · depth 56 km
M 4.7 mbSeptember 20, 1990
27 km SSE of Akutan, Alaska · depth 80 km
M 5.6 mwSeptember 14, 1990
south of Alaska · depth 33 km
M 4.8 mbSeptember 14, 1990
65 km SSE of Nikolski, Alaska · depth 33 km
M 5.1 mbSeptember 14, 1990
90 km S of Nikolski, Alaska · depth 33 km
M 4.9 msSeptember 4, 1990
60 km SSE of Nikolski, Alaska · depth 33 km
M 4.7 mbAugust 28, 1990
17 km S of Nikolski, Alaska · depth 33 km
M 5.2 mwAugust 28, 1990
85 km SSE of Nikolski, Alaska · depth 33 km
M 4.5 mbAugust 23, 1990
26 km N of Fishhook, Alaska · depth 39 km
M 4.7 mbAugust 20, 1990
20 km WNW of Clam Gulch, Alaska · depth 58 km
M 4.5 mbAugust 18, 1990
227 km SW of Yakutat, Alaska · depth 10 km
M 4.9 mbAugust 17, 1990
115 km SE of Nikolski, Alaska · depth 33 km
M 4.8 mbAugust 17, 1990
105 km ESE of Nikolski, Alaska · depth 33 km
M 5.5 mwAugust 13, 1990
13 km NW of Happy Valley, Alaska · depth 72 km
M 4.6 mbAugust 6, 1990
82 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbJuly 30, 1990
131 km ESE of Akutan, Alaska · depth 33 km
M 5.3 mwJuly 25, 1990
291 km SSE of Perryville, Alaska · depth 48 km
M 4.7 mbJuly 23, 1990
153 km S of False Pass, Alaska · depth 33 km
M 5.3 mwJuly 15, 1990
35 km ESE of Nikolski, Alaska · depth 60 km
M 4.5 mbJuly 13, 1990
96 km SE of King Cove, Alaska · depth 97 km
M 5.5 mwJuly 11, 1990
27 km WSW of Covenant Life, Alaska · depth 10 km
M 4.5 mbJuly 11, 1990
78 km S of False Pass, Alaska · depth 33 km
M 4.6 mbJune 21, 1990
25 km ESE of Akutan, Alaska · depth 73 km
M 5.0 msJune 19, 1990
65 km SSE of King Cove, Alaska · depth 33 km
M 5.0 mbJune 14, 1990
69 km SW of Akhiok, Alaska · depth 29 km
M 5.1 mbJune 8, 1990
77 km SSW of Nikolski, 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.