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Home / Earthquakes / Alaska

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 5.4 mwwSeptember 21, 2023
47 km S of Sand Point, Alaska · depth 50 km
M 4.9 mbSeptember 12, 2023
108 km SSW of False Pass, Alaska · depth 47 km
M 4.7 mbSeptember 12, 2023
south of Alaska · depth 5 km
M 5.0 mwwSeptember 10, 2023
121 km SSW of Sand Point, Alaska · depth 26 km
M 5.1 mwwAugust 30, 2023
Alaska Peninsula · depth 47 km
M 4.5 mbAugust 30, 2023
123 km SW of Point Hope, Alaska · depth 26 km
M 4.6 mbAugust 28, 2023
78 km ESE of King Cove, Alaska · depth 54 km
M 4.5 mwrAugust 20, 2023
79 km SSW of Sand Point, Alaska · depth 46 km
M 5.2 mwwAugust 20, 2023
179 km SE of Nikolski, Alaska · depth 10 km
M 4.5 mbAugust 16, 2023
86 km SSW of Nikolski, Alaska · depth 43 km
M 5.0 mwwAugust 14, 2023
101 km ESE of Akutan, Alaska · depth 36 km
M 4.8 mwrAugust 6, 2023
157 km E of McCarthy, Alaska · depth 3 km
M 4.7 mbAugust 6, 2023
48 km ESE of Pedro Bay, Alaska · depth 108 km
M 5.6 mwwAugust 3, 2023
85 km SSW of Sand Point, Alaska · depth 35 km
M 4.5 mwrAugust 1, 2023
139 km SE of Akutan, Alaska · depth 7 km
M 4.5 mwrJuly 30, 2023
93 km S of Unalaska, Alaska · depth 35 km
M 5.0 mwwJuly 28, 2023
66 km SE of Kokhanok, Alaska · depth 107 km
M 4.6 mwrJuly 28, 2023
Alaska Peninsula · depth 6 km
M 4.7 mwrJuly 26, 2023
87 km SSW of Sand Point, Alaska · depth 37 km
M 4.5 mwrJuly 24, 2023
59 km SSW of Sand Point, Alaska · depth 42 km
M 4.6 mbJuly 18, 2023
Alaska Peninsula · depth 43 km
M 4.5 mbJuly 18, 2023
266 km SSW of Nikolski, Alaska · depth 18 km
M 4.8 mwwJuly 17, 2023
113 km S of False Pass, Alaska · depth 48 km
M 4.7 mwrJuly 16, 2023
91 km SSW of Sand Point, Alaska · depth 42 km
M 4.5 mbJuly 16, 2023
117 km S of Sand Point, Alaska · depth 40 km
M 4.5 mbJuly 16, 2023
114 km S of Sand Point, Alaska · depth 42 km
M 5.8 mbJuly 16, 2023
81 km SSW of Sand Point, Alaska · depth 35 km
M 7.2 mwwJuly 16, 2023
2023 Sand Point, Alaska Earthquake · depth 25 km
M 4.5 mwrJuly 3, 2023
3 km SSW of Eagle River, Alaska · depth 36 km
M 4.8 mbJuly 1, 2023
88 km WSW of Nikolski, Alaska · depth 80 km
M 5.0 mwwJune 18, 2023
59 km N of Karluk, Alaska · depth 84 km
M 4.7 mbJune 16, 2023
150 km SE of Chignik, Alaska · depth 10 km
M 4.8 mbJune 11, 2023
14 km E of Central, Alaska · depth 15 km
M 4.5 mwrJune 7, 2023
105 km ESE of Ugashik, Alaska · depth 2 km
M 4.7 mbJune 6, 2023
151 km S of False Pass, Alaska · depth 17 km
M 4.6 mwrJune 4, 2023
144 km S of False Pass, Alaska · depth 14 km
M 4.6 mwrJune 3, 2023
150 km S of False Pass, Alaska · depth 10 km
M 4.6 mwwJune 3, 2023
136 km S of False Pass, Alaska · depth 21 km
M 5.4 mwwMay 13, 2023
71 km WNW of Nikolski, Alaska · depth 112 km
M 4.6 mbMay 13, 2023
Southern Alaska · depth 16 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.