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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 6.8 mwJanuary 28, 1967
79 km SW of Nikolski, Alaska · depth 36 km
M 5.6 mwJanuary 19, 1967
80 km SW of Nikolski, Alaska · depth 26 km
M 5.9 mwJanuary 18, 1967
50 km SSE of Nikolski, Alaska · depth 39 km
M 5.3 mwDecember 20, 1966
63 km NW of Beaver, Alaska · depth 10 km
M 5.3 mwDecember 20, 1966
69 km NW of Beaver, Alaska · depth 10 km
M 5.6 mwNovember 11, 1966
73 km SSW of Nikolski, Alaska · depth 25 km
M 5.6 mwOctober 7, 1966
11 km NW of Big Lake, Alaska · depth 55 km
M 5.3 mwSeptember 1, 1966
3 km NNE of Houston, Alaska · depth 48 km
M 5.6 mwAugust 30, 1966
58 km WNW of Tatitlek, Alaska · depth 35 km
M 5.7 mwAugust 30, 1966
67 km S of Glacier View, Alaska · depth 29 km
M 5.5 mwAugust 15, 1966
31 km SW of Cordova, Alaska · depth 15 km
M 5.8 mwAugust 12, 1966
280 km SSE of False Pass, Alaska · depth 17 km
M 5.3 mwAugust 7, 1966
128 km SSE of Cordova, Alaska · depth 20 km
M 6.9 mwAugust 7, 1966
275 km SE of Atka, Alaska · depth 11 km
M 5.4 mwJune 22, 1966
62 km S of Glacier View, Alaska · depth 30 km
M 6.0 mwMay 19, 1966
106 km ESE of Akutan, Alaska · depth 30 km
M 5.4 mwApril 22, 1966
36 km SSW of Chiniak, Alaska · depth 22 km
M 6.1 mwApril 16, 1966
36 km ESE of Akhiok, Alaska · depth 35 km
M 5.8 mwApril 11, 1966
103 km SE of Old Harbor, Alaska · depth 25 km
M 5.5 mwApril 9, 1966
94 km SSE of Old Harbor, Alaska · depth 22 km
M 5.7 mwApril 8, 1966
100 km SSE of Old Harbor, Alaska · depth 31 km
M 5.6 mwApril 6, 1966
68 km SSW of Akhiok, Alaska · depth 26 km
M 6.2 mwJanuary 22, 1966
125 km S of Akhiok, Alaska · depth 27 km
M 5.8 mwDecember 30, 1965
95 km E of Akutan, Alaska · depth 45 km
M 5.6 mwDecember 23, 1965
115 km NNW of Yakutat, Alaska · depth 22 km
M 6.3 mwDecember 22, 1965
37 km NNW of Aleneva, Alaska · depth 51 km
M 5.8 mwDecember 4, 1965
236 km SSW of Nikolski, Alaska · depth 15 km
M 5.6 mwOctober 23, 1965
35 km SE of Akutan, Alaska · depth 45 km
M 5.7 mwOctober 12, 1965
91 km SSE of Akhiok, Alaska · depth 28 km
M 6.1 mwSeptember 30, 1965
171 km SE of Cordova, Alaska · depth 20 km
M 5.7 mwSeptember 18, 1965
143 km S of Cordova, Alaska · depth 15 km
M 5.6 mwSeptember 8, 1965
159 km SSW of Akhiok, Alaska · depth 18 km
M 5.6 mwSeptember 8, 1965
13 km S of Chiniak, Alaska · depth 25 km
M 6.8 mwSeptember 4, 1965
17 km N of Ouzinkie, Alaska · depth 29 km
M 5.6 mwAugust 24, 1965
138 km S of Cordova, Alaska · depth 15 km
M 5.7 mwAugust 11, 1965
122 km SE of Chenega, Alaska · depth 13 km
M 5.2 mwAugust 3, 1965
48 km NW of Chignik Lake, Alaska · depth 35 km
M 5.6 mwJuly 29, 1965
226 km SE of Atka, Alaska · depth 20 km
M 5.7 mwJuly 29, 1965
237 km SE of Atka, Alaska · depth 15 km
M 6.9 mwJuly 29, 1965
240 km SE of Atka, Alaska · depth 23 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.