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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 4.8 mbFebruary 21, 1986
107 km SSW of Akhiok, Alaska · depth 33 km
M 4.7 mbFebruary 20, 1986
59 km E of Nikolski, Alaska · depth 33 km
M 5.0 mbFebruary 13, 1986
64 km SSE of Sand Point, Alaska · depth 33 km
M 5.1 mbFebruary 6, 1986
116 km NNE of Kobuk, Alaska · depth 33 km
M 4.5 mbFebruary 5, 1986
115 km NNE of Kobuk, Alaska · depth 33 km
M 4.8 mbJanuary 29, 1986
227 km S of False Pass, Alaska · depth 33 km
M 4.6 mbJanuary 6, 1986
32 km SSE of Sand Point, Alaska · depth 33 km
M 4.6 mbDecember 31, 1985
27 km W of Anchor Point, Alaska · depth 38 km
M 5.1 mbDecember 30, 1985
21 km ENE of Denali National Park, Alaska · depth 33 km
M 5.5 mbDecember 30, 1985
9 km E of Susitna, Alaska · depth 62 km
M 4.8 mbDecember 29, 1985
30 km ENE of Akutan, Alaska · depth 132 km
M 5.3 mbDecember 28, 1985
117 km SSE of Ugashik, Alaska · depth 59 km
M 4.5 mbDecember 25, 1985
27 km W of Anchor Point, Alaska · depth 94 km
M 4.7 mbDecember 14, 1985
156 km WSW of Nikolski, Alaska · depth 33 km
M 4.8 mbDecember 8, 1985
123 km SSW of False Pass, Alaska · depth 33 km
M 4.8 mbDecember 8, 1985
40 km E of Fox River, Alaska · depth 39 km
M 4.8 mbDecember 7, 1985
84 km ENE of Akutan, Alaska · depth 33 km
M 4.6 mbNovember 27, 1985
84 km SE of Akhiok, Alaska · depth 33 km
M 4.5 mbNovember 16, 1985
100 km SE of Sand Point, Alaska · depth 33 km
M 4.6 mbNovember 15, 1985
94 km SE of Sand Point, Alaska · depth 33 km
M 4.6 mbNovember 14, 1985
78 km SE of Sand Point, Alaska · depth 33 km
M 6.1 mwNovember 14, 1985
79 km SE of Sand Point, Alaska · depth 33 km
M 4.5 mbNovember 13, 1985
14 km W of Salamatof, Alaska · depth 79 km
M 4.7 mbNovember 12, 1985
118 km WSW of Nikolski, Alaska · depth 33 km
M 5.1 mwNovember 5, 1985
31 km W of Petersville, Alaska · depth 81 km
M 4.7 mbNovember 2, 1985
103 km ESE of Akutan, Alaska · depth 33 km
M 4.8 mbNovember 2, 1985
100 km SE of Chignik, Alaska · depth 33 km
M 4.6 mbOctober 31, 1985
98 km SSW of Unalaska, Alaska · depth 33 km
M 4.7 mbOctober 31, 1985
75 km ENE of Ugashik, Alaska · depth 33 km
M 6.2 mwOctober 31, 1985
74 km SSW of Unalaska, Alaska · depth 30 km
M 5.3 mwOctober 27, 1985
95 km WNW of Aleneva, Alaska · depth 83 km
M 5.4 mwOctober 26, 1985
82 km SE of Sand Point, Alaska · depth 33 km
M 4.8 mbOctober 26, 1985
106 km SE of Akutan, Alaska · depth 33 km
M 6.0 mwOctober 25, 1985
194 km WSW of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 24, 1985
91 km SW of False Pass, Alaska · depth 64 km
M 4.8 mbOctober 18, 1985
51 km ESE of Nikolski, Alaska · depth 33 km
M 4.9 mbOctober 10, 1985
71 km SE of Sand Point, Alaska · depth 33 km
M 5.0 mbOctober 9, 1985
80 km SE of Sand Point, Alaska · depth 33 km
M 6.6 mwOctober 9, 1985
85 km SE of Sand Point, Alaska · depth 30 km
M 4.9 mbOctober 9, 1985
134 km S of False Pass, 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.