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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 · 200 km WSW of Yakutat, AlaskaNovember 30, 1987M 7.9 · 261 km SE of Chiniak, AlaskaJanuary 23, 2018M 7.9 · 2002 Denali Fault, Alaska EarthquakeNovember 3, 2002M 7.9 · Kodiak Island region, AlaskaOctober 9, 1900M 7.8 · 81 km E of Nikolski, AlaskaJuly 2, 1965M 7.8 · 234 km SSW of Nikolski, AlaskaMarch 7, 1929
All recorded earthquakes
M 5.2 mbSeptember 2, 2026
78 km SSW of Nikolski, Alaska · depth 35 km
M 4.6 mbSeptember 2, 2026
101 km SSW of Nikolski, Alaska · depth 17 km
M 4.9 mlSeptember 2, 2026
85 km SSW of Nikolski, Alaska · depth 19 km
M 5.2 mbSeptember 2, 2026
95 km SSW of Nikolski, Alaska · depth 35 km
M 4.9 mbSeptember 2, 2026
98 km SSW of Nikolski, Alaska · depth 39 km
M 4.6 mbSeptember 1, 2026
84 km SSW of Nikolski, Alaska · depth 35 km
M 4.5 mbSeptember 1, 2026
90 km SSW of Nikolski, Alaska · depth 38 km
M 4.5 mbSeptember 1, 2026
105 km SSW of Nikolski, Alaska · depth 42 km
M 5.3 mwwSeptember 1, 2026
89 km SSW of Nikolski, Alaska · depth 26 km
M 4.8 mlAugust 29, 2026
184 km SE of Perryville, Alaska · depth 5 km
M 4.8 mbAugust 27, 2026
195 km SE of Akutan, Alaska · depth 10 km
M 4.5 mlAugust 17, 2026
41 km SW of Karluk, Alaska · depth 58 km
M 4.8 mwwAugust 11, 2026
95 km SSE of Sand Point, Alaska · depth 37 km
M 5.6 mlAugust 8, 2026
57 km WNW of Skwentna, Alaska · depth 10 km
M 5.0 mlJuly 28, 2026
52 km E of Denali National Park, Alaska · depth 5 km
M 4.9 mlJuly 22, 2026
96 km SSE of Akhiok, Alaska · depth 16 km
M 5.2 mlJuly 16, 2026
122 km SE of McCarthy, Alaska · depth 9 km
M 4.9 mlJuly 16, 2026
106 km NNW of Aleknagik, Alaska · depth 3 km
M 5.4 mwwJuly 14, 2026
93 km SE of False Pass, Alaska · depth 49 km
M 5.2 mwwJuly 14, 2026
106 km SSE of False Pass, Alaska · depth 34 km
M 4.5 mbJuly 12, 2026
30 km SSW of Unalaska, Alaska · depth 96 km
M 5.3 mlJune 29, 2026
35 km SSW of Cordova, Alaska · depth 13 km
M 4.9 mlJune 27, 2026
13 km SSE of Clam Gulch, Alaska · depth 55 km
M 5.0 mwwJune 13, 2026
83 km SSW of Unalaska, Alaska · depth 53 km
M 4.8 mbMay 25, 2026
174 km SW of Nikolski, Alaska · depth 21 km
M 4.8 mwwMay 24, 2026
163 km SW of Nikolski, Alaska · depth 10 km
M 5.3 mwwMay 23, 2026
167 km SW of Nikolski, Alaska · depth 10 km
M 4.9 mbMay 23, 2026
92 km SSW of Nikolski, Alaska · depth 10 km
M 5.6 mwwMay 22, 2026
172 km ENE of Atka, Alaska · depth 15 km
M 4.6 mbMay 22, 2026
110 km SSW of Nikolski, Alaska · depth 10 km
M 4.8 mlMay 19, 2026
26 km W of Ruby, Alaska · depth 14 km
M 4.9 mwwMay 18, 2026
168 km E of Atka, Alaska · depth 10 km
M 4.7 mbMay 14, 2026
84 km S of King Cove, Alaska · depth 48 km
M 4.7 mwrMay 5, 2026
78 km SSE of Akutan, Alaska · depth 44 km
M 4.6 mwrMay 3, 2026
85 km SSE of False Pass, Alaska · depth 41 km
M 5.5 mwwApril 25, 2026
88 km SE of Akutan, Alaska · depth 24 km
M 4.8 mwrApril 24, 2026
73 km SSE of Nikolski, Alaska · depth 32 km
M 5.1 mwwApril 12, 2026
93 km S of King Cove, Alaska · depth 35 km
M 4.7 mwrApril 11, 2026
172 km E of Atka, Alaska · depth 63 km
M 4.9 mwwApril 10, 2026
89 km SE of False Pass, Alaska · depth 27 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.