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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 4.5 mbApril 11, 1974
152 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbApril 10, 1974
47 km S of Nikolski, Alaska · depth 15 km
M 4.6 mbApril 6, 1974
37 km WSW of Port Lions, Alaska · depth 53 km
M 6.0 mbApril 6, 1974
24 km S of Sand Point, Alaska · depth 40 km
M 5.7 mbApril 6, 1974
26 km S of Sand Point, Alaska · depth 27 km
M 5.7 mbMarch 29, 1974
6 km NE of Larsen Bay, Alaska · depth 44 km
M 5.1 mbMarch 22, 1974
137 km S of False Pass, Alaska · depth 33 km
M 4.9 mbMarch 22, 1974
128 km S of False Pass, Alaska · depth 33 km
M 4.5 mbMarch 14, 1974
183 km SE of Nikolski, Alaska · depth 33 km
M 4.5 mbMarch 10, 1974
74 km SE of Denali National Park, Alaska · depth 117 km
M 5.0 mbFebruary 28, 1974
96 km S of Unalaska, Alaska · depth 33 km
M 4.5 mbFebruary 24, 1974
55 km NNW of Nikolski, Alaska · depth 98 km
M 4.7 mbFebruary 17, 1974
134 km S of False Pass, Alaska · depth 33 km
M 4.5 mbFebruary 15, 1974
65 km SE of Denali National Park, Alaska · depth 126 km
M 4.6 mbFebruary 10, 1974
41 km SW of Nanwalek, Alaska · depth 61 km
M 6.5 msFebruary 6, 1974
81 km ESE of Akutan, Alaska · depth 2 km
M 5.0 mbFebruary 5, 1974
70 km ENE of Chase, Alaska · depth 75 km
M 5.1 mbFebruary 2, 1974
23 km S of Glacier View, Alaska · depth 48 km
M 4.8 mbJanuary 31, 1974
77 km S of Nikolski, Alaska · depth 44 km
M 5.6 mbJanuary 31, 1974
65 km S of Nikolski, Alaska · depth 36 km
M 5.3 mbJanuary 26, 1974
186 km WSW of Nikolski, AK · depth 54 km
M 4.8 mbJanuary 24, 1974
24 km S of Glacier View, Alaska · depth 40 km
M 4.6 mbJanuary 22, 1974
55 km E of Port Alsworth, Alaska · depth 152 km
M 5.0 mbJanuary 19, 1974
59 km E of Nikolski, Alaska · depth 59 km
M 4.9 mbJanuary 7, 1974
21 km E of Pedro Bay, Alaska · depth 128 km
M 5.4 mbJanuary 5, 1974
190 km E of Atka, Alaska · depth 41 km
M 4.6 mbDecember 22, 1973
130 km SSE of Nikolski, Alaska · depth 33 km
M 4.6 mbDecember 21, 1973
44 km WNW of Nikolski, Alaska · depth 33 km
M 4.7 mbDecember 21, 1973
65 km SW of Nikolski, Alaska · depth 49 km
M 4.7 mbDecember 21, 1973
82 km SSW of Nikolski, Alaska · depth 49 km
M 4.8 mbDecember 21, 1973
84 km SSW of Nikolski, Alaska · depth 44 km
M 4.7 mbDecember 21, 1973
79 km SSW of Nikolski, Alaska · depth 47 km
M 4.8 mbDecember 15, 1973
39 km NNW of Aleneva, Alaska · depth 52 km
M 4.7 mbDecember 8, 1973
141 km S of False Pass, Alaska · depth 44 km
M 5.6 mbDecember 2, 1973
73 km S of Nikolski, Alaska · depth 40 km
M 4.5 mbNovember 17, 1973
47 km E of Pedro Bay, Alaska · depth 128 km
M 4.6 mbNovember 4, 1973
128 km SSE of Alcan Border, Alaska · depth 7 km
M 4.8 mbOctober 26, 1973
6 km S of Mud Bay, Alaska · depth 33 km
M 4.8 mbOctober 21, 1973
122 km S of False Pass, Alaska · depth 44 km
M 4.9 mbOctober 16, 1973
159 km W of Nikolski, Alaska · depth 112 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.