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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 14, 2019
16 km SSW of Akutan, Alaska · depth 67 km
M 5.7 mwwSeptember 10, 2019
223 km WSW of Pelican, Alaska · depth 10 km
M 4.5 mlSeptember 8, 2019
76 km NW of Yakutat, Alaska · depth 11 km
M 4.6 mlSeptember 6, 2019
65 km SSW of Tanana, Alaska · depth 11 km
M 4.7 mwwSeptember 3, 2019
70 km ESE of Sand Point, Alaska · depth 26 km
M 5.0 mwwSeptember 1, 2019
64 km WSW of Covenant Life, Alaska · depth 10 km
M 4.6 mlAugust 14, 2019
92 km WSW of Elfin Cove, Alaska · depth 20 km
M 4.9 mwwAugust 10, 2019
95 km SSE of Nikolski, Alaska · depth 11 km
M 5.2 mwwAugust 3, 2019
189 km SSE of Unalaska, Alaska · depth 23 km
M 5.5 mwwJuly 9, 2019
92 km E of Nikolski, Alaska · depth 33 km
M 4.7 mlJuly 3, 2019
2 km SW of Kasilof, Alaska · depth 61 km
M 4.5 mbJuly 3, 2019
98 km SSE of False Pass, Alaska · depth 35 km
M 4.6 mlJuly 3, 2019
115 km NNE of Arctic Village, Alaska · depth 13 km
M 5.3 mwwJuly 3, 2019
115 km NNE of Arctic Village, Alaska · depth 14 km
M 4.6 mlJuly 2, 2019
17 km SSW of Nanwalek, Alaska · depth 52 km
M 4.5 mlJuly 2, 2019
68 km S of Shungnak, Alaska · depth 8 km
M 4.9 mlJune 30, 2019
21 km SW of Karluk, Alaska · depth 76 km
M 4.5 mlJune 15, 2019
66 km S of Shungnak, Alaska · depth 6 km
M 5.0 mbJune 7, 2019
87 km ENE of Ouzinkie, Alaska · depth 25 km
M 5.8 mlMay 27, 2019
61 km SSW of Nanwalek, Alaska · depth 64 km
M 4.6 mlApril 23, 2019
67 km S of Shungnak, Alaska · depth 7 km
M 4.5 mbApril 18, 2019
57 km SSE of Nikolski, Alaska · depth 35 km
M 4.8 mlApril 16, 2019
65 km S of Shungnak, Alaska · depth 9 km
M 4.5 mlApril 11, 2019
15 km NNW of Four Mile Road, Alaska · depth 20 km
M 4.8 mwwApril 8, 2019
232 km SE of Chiniak, Alaska · depth 7 km
M 4.8 mlApril 8, 2019
64 km WNW of Tanana, Alaska · depth 9 km
M 4.6 mbApril 8, 2019
127 km SSW of Unalaska, Alaska · depth 35 km
M 4.7 mbApril 8, 2019
121 km SSW of Nikolski, Alaska · depth 23 km
M 4.6 mlApril 7, 2019
74 km S of Akhiok, Alaska · depth 22 km
M 4.5 mbMarch 26, 2019
48 km W of Nelson Lagoon, Alaska · depth 169 km
M 5.0 mwwMarch 26, 2019
northern Alaska · depth 9 km
M 4.5 mlMarch 12, 2019
68 km S of Shungnak, Alaska · depth 8 km
M 4.8 mlMarch 11, 2019
110 km WNW of Yakutat, Alaska · depth 14 km
M 4.8 mlMarch 9, 2019
Southeastern Alaska · depth 28 km
M 4.8 mlMarch 7, 2019
93 km E of King Salmon, Alaska · depth 133 km
M 4.7 mwwMarch 7, 2019
90 km W of False Pass, Alaska · depth 166 km
M 5.2 mwwMarch 6, 2019
64 km S of Shungnak, Alaska · depth 9 km
M 4.6 mbFebruary 22, 2019
279 km SE of Chiniak, Alaska · depth 6 km
M 5.1 mwwFebruary 15, 2019
138 km SSE of False Pass, Alaska · depth 35 km
M 4.8 mlFebruary 10, 2019
64 km S of Shungnak, Alaska · depth 8 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.