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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 mbMarch 24, 1980
77 km E of Nikolski, Alaska · depth 33 km
M 4.8 mbMarch 24, 1980
87 km NNE of Nikolski, Alaska · depth 33 km
M 6.1 mbMarch 24, 1980
102 km ESE of Nikolski, Alaska · depth 33 km
M 6.9 msMarch 24, 1980
80 km E of Nikolski, Alaska · depth 33 km
M 4.9 mbMarch 24, 1980
80 km E of Nikolski, Alaska · depth 33 km
M 4.9 mbMarch 17, 1980
58 km ENE of Pedro Bay, Alaska · depth 132 km
M 4.5 mbMarch 14, 1980
170 km SSE of Chignik, Alaska · depth 33 km
M 5.4 mbMarch 12, 1980
88 km S of Nikolski, Alaska · depth 40 km
M 5.2 mbMarch 11, 1980
84 km S of Nikolski, Alaska · depth 20 km
M 4.6 mbMarch 10, 1980
13 km S of Larsen Bay, Alaska · depth 79 km
M 4.8 mbMarch 10, 1980
53 km SE of False Pass, Alaska · depth 52 km
M 4.5 mbMarch 9, 1980
74 km SSE of Akhiok, Alaska · depth 33 km
M 4.6 mbFebruary 20, 1980
53 km SE of Ugashik, Alaska · depth 97 km
M 4.5 mbJanuary 26, 1980
52 km N of Wales, Alaska · depth 33 km
M 4.5 mbJanuary 22, 1980
77 km SW of Nikolski, Alaska · depth 49 km
M 4.5 mbJanuary 20, 1980
105 km SSE of Old Harbor, Alaska · depth 33 km
M 4.7 mbJanuary 16, 1980
203 km S of False Pass, Alaska · depth 36 km
M 4.6 mbJanuary 12, 1980
109 km SW of Nikolski, Alaska · depth 35 km
M 4.8 mbJanuary 8, 1980
49 km SW of Nikolski, Alaska · depth 58 km
M 4.8 mbDecember 14, 1979
230 km SE of Akutan, Alaska · depth 33 km
M 5.4 mbDecember 9, 1979
92 km W of Nikolski, Alaska · depth 102 km
M 4.9 mbDecember 9, 1979
107 km NW of Yakutat, Alaska · depth 15 km
M 5.0 mbDecember 4, 1979
124 km ESE of Akutan, Alaska · depth 39 km
M 4.5 mbNovember 24, 1979
134 km WSW of Nikolski, Alaska · depth 33 km
M 5.1 mbNovember 14, 1979
6 km WNW of Point MacKenzie, Alaska · depth 57 km
M 4.7 mbNovember 10, 1979
129 km NW of Yakutat, Alaska · depth 15 km
M 4.8 mbOctober 29, 1979
58 km SW of Nikolski, Alaska · depth 25 km
M 4.5 mbOctober 17, 1979
83 km WNW of Yakutat, Alaska · depth 15 km
M 4.6 mbSeptember 22, 1979
31 km WSW of Unalaska, Alaska · depth 33 km
M 4.8 mbSeptember 21, 1979
84 km SSW of Sand Point, Alaska · depth 39 km
M 4.6 mbSeptember 9, 1979
Fox Islands, Aleutian Islands, Alaska · depth 15 km
M 4.7 mbSeptember 8, 1979
96 km SE of Chenega, Alaska · depth 33 km
M 5.8 mbSeptember 1, 1979
41 km ESE of Akutan, Alaska · depth 69 km
M 5.1 mbAugust 31, 1979
81 km SSE of King Cove, Alaska · depth 20 km
M 4.6 mbAugust 31, 1979
61 km SSE of Nikolski, Alaska · depth 33 km
M 4.8 mbAugust 25, 1979
175 km SSE of King Cove, Alaska · depth 33 km
M 4.6 mbAugust 22, 1979
57 km S of Port Graham, Alaska · depth 33 km
M 5.0 mbAugust 10, 1979
156 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbAugust 10, 1979
139 km SW of Nikolski, Alaska · depth 33 km
M 5.0 mbJuly 26, 1979
232 km SE of Atka, 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.