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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 4.5 mbAugust 19, 2010
73 km S of Akhiok, Alaska · depth 10 km
M 4.6 mbAugust 18, 2010
75 km SSW of Sand Point, Alaska · depth 2 km
M 5.1 mwcAugust 17, 2010
107 km W of Nikolski, Alaska · depth 10 km
M 4.6 mbAugust 17, 2010
117 km SE of Akutan, Alaska · depth 34 km
M 4.5 mbAugust 15, 2010
50 km SW of Nikolski, Alaska · depth 10 km
M 4.6 mwAugust 14, 2010
53 km ENE of Pedro Bay, Alaska · depth 141 km
M 4.5 mbAugust 4, 2010
47 km WSW of Nikolski, Alaska · depth 13 km
M 4.5 mbAugust 1, 2010
39 km WSW of Nikolski, Alaska · depth 5 km
M 4.6 mbAugust 1, 2010
30 km SW of Nikolski, Alaska · depth 10 km
M 4.5 mbJuly 30, 2010
60 km SSE of Kokhanok, Alaska · depth 123 km
M 4.6 mbJuly 29, 2010
48 km WSW of Nikolski, Alaska · depth 10 km
M 4.6 mbJuly 29, 2010
65 km W of Nikolski, Alaska · depth 10 km
M 5.2 mwcJuly 28, 2010
47 km SW of Nikolski, Alaska · depth 15 km
M 5.6 mwcJuly 28, 2010
Fox Islands, Aleutian Islands, Alaska · depth 10 km
M 4.5 mbJuly 26, 2010
58 km WSW of Nikolski, Alaska · depth 4 km
M 4.6 mbJuly 23, 2010
54 km WSW of Nikolski, Alaska · depth 5 km
M 5.1 mwcJuly 21, 2010
63 km WSW of Nikolski, Alaska · depth 5 km
M 5.0 mwcJuly 20, 2010
52 km SW of Nikolski, Alaska · depth 13 km
M 5.0 mwcJuly 19, 2010
59 km WSW of Nikolski, Alaska · depth 5 km
M 4.5 mbJuly 19, 2010
52 km WSW of Nikolski, Alaska · depth 6 km
M 5.1 mwcJuly 19, 2010
43 km WSW of Nikolski, Alaska · depth 3 km
M 4.5 mbJuly 19, 2010
47 km SW of Nikolski, Alaska · depth 7 km
M 4.6 mbJuly 19, 2010
53 km WSW of Nikolski, Alaska · depth 10 km
M 4.7 mbJuly 19, 2010
37 km SW of Nikolski, Alaska · depth 4 km
M 4.6 mbJuly 19, 2010
62 km WSW of Nikolski, Alaska · depth 10 km
M 5.5 mwcJuly 19, 2010
53 km WSW of Nikolski, Alaska · depth 10 km
M 5.7 mwcJuly 19, 2010
44 km SW of Nikolski, Alaska · depth 10 km
M 4.7 mbJuly 19, 2010
51 km WSW of Nikolski, Alaska · depth 4 km
M 4.8 mlJuly 18, 2010
49 km WSW of Nikolski, Alaska · depth 10 km
M 6.0 mwbJuly 18, 2010
59 km WSW of Nikolski, Alaska · depth 10 km
M 4.8 mbJuly 18, 2010
51 km WSW of Nikolski, Alaska · depth 3 km
M 4.7 mbJuly 18, 2010
55 km WSW of Nikolski, Alaska · depth 7 km
M 4.5 mbJuly 18, 2010
54 km SW of Nikolski, Alaska · depth 5 km
M 6.7 mwcJuly 18, 2010
66 km W of Nikolski, Alaska · depth 14 km
M 4.6 mbJuly 10, 2010
75 km SE of Akutan, Alaska · depth 44 km
M 4.8 mwJuly 8, 2010
25 km WNW of Willow, Alaska · depth 15 km
M 4.8 mbJuly 1, 2010
149 km S of False Pass, Alaska · depth 42 km
M 4.6 mwJune 25, 2010
10 km NNW of Glacier View, Alaska · depth 34 km
M 4.8 mwJune 20, 2010
11 km SW of Tatitlek, Alaska · depth 11 km
M 4.9 mwcJune 18, 2010
114 km SSW of Nikolski, Alaska · depth 11 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.