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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 5.5 msJuly 24, 1979
137 km S of Sand Point, Alaska · depth 33 km
M 4.7 mbJuly 18, 1979
84 km SSE of Ugashik, Alaska · depth 80 km
M 4.8 mbJuly 18, 1979
94 km SSE of Ugashik, Alaska · depth 57 km
M 5.3 mbJuly 17, 1979
55 km NNE of Chickaloon, Alaska · depth 58 km
M 4.6 mbJuly 16, 1979
96 km W of Nikiski, Alaska · depth 141 km
M 5.4 mbJuly 15, 1979
160 km SW of Nikolski, Alaska · depth 39 km
M 5.1 msJuly 11, 1979
105 km S of Port Alexander, Alaska · depth 10 km
M 4.9 mbJuly 10, 1979
62 km SE of Denali National Park, Alaska · depth 130 km
M 4.6 mbJuly 9, 1979
105 km ENE of Circle, Alaska · depth 33 km
M 4.9 mbJuly 5, 1979
126 km S of Unalaska, Alaska · depth 21 km
M 5.1 msJuly 4, 1979
117 km E of Nikolski, Alaska · depth 33 km
M 4.6 mbJune 25, 1979
101 km NW of Yakutat, Alaska · depth 19 km
M 4.6 mbJune 22, 1979
134 km S of False Pass, AK · depth 33 km
M 4.5 mbJune 12, 1979
104 km SSW of Unalaska, Alaska · depth 40 km
M 4.6 mbJune 4, 1979
99 km SSW of Unalaska, Alaska · depth 33 km
M 5.0 mbMay 30, 1979
54 km NW of Nelson Lagoon, Alaska · depth 206 km
M 4.9 mbMay 29, 1979
136 km W of Nikolski, Alaska · depth 102 km
M 4.7 mbMay 27, 1979
118 km ESE of Nikolski, Alaska · depth 33 km
M 4.6 mbMay 26, 1979
116 km E of Nikolski, Alaska · depth 33 km
M 4.5 mbMay 26, 1979
120 km SSW of Unalaska, Alaska · depth 26 km
M 4.6 mbMay 25, 1979
114 km SSW of Unalaska, Alaska · depth 33 km
M 4.8 mbMay 25, 1979
169 km ESE of Nikolski, Alaska · depth 33 km
M 6.2 msMay 25, 1979
129 km ESE of Nikolski, Alaska · depth 23 km
M 4.9 mbMay 23, 1979
94 km SSE of Ugashik, Alaska · depth 71 km
M 6.4 mbMay 20, 1979
104 km SSE of Ugashik, Alaska · depth 71 km
M 4.8 mbMay 20, 1979
183 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbMay 16, 1979
105 km NW of Yakutat, Alaska · depth 15 km
M 4.5 mbMay 12, 1979
70 km N of Akutan, Alaska · depth 111 km
M 5.1 mbMay 8, 1979
39 km ESE of Nikolski, Alaska · depth 39 km
M 4.6 mbMay 5, 1979
59 km SE of Cantwell, Alaska · depth 77 km
M 4.8 mbApril 21, 1979
79 km SSW of Nikolski, Alaska · depth 36 km
M 5.3 mbApril 20, 1979
106 km NW of Yakutat, Alaska · depth 15 km
M 5.1 mbApril 18, 1979
229 km SSW of Nikolski, AK · depth 33 km
M 4.6 mbApril 16, 1979
108 km SW of Nikolski, Alaska · depth 39 km
M 4.7 mbApril 14, 1979
78 km S of False Pass, Alaska · depth 55 km
M 4.7 mbApril 14, 1979
43 km ESE of Perryville, Alaska · depth 47 km
M 4.7 mbApril 11, 1979
95 km SSW of Sand Point, Alaska · depth 33 km
M 4.5 mbApril 4, 1979
Southern Alaska · depth 174 km
M 4.8 mbMarch 30, 1979
69 km SSW of Unalaska, Alaska · depth 37 km
M 4.5 mbMarch 22, 1979
192 km SSE of Perryville, 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.