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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 4.6 mbJune 24, 2011
Fox Islands, Aleutian Islands, Alaska · depth 55 km
M 4.6 mbJune 24, 2011
161 km E of Atka, Alaska · depth 54 km
M 4.7 mbJune 24, 2011
173 km E of Atka, Alaska · depth 67 km
M 4.7 mbJune 24, 2011
181 km ESE of Atka, Alaska · depth 44 km
M 7.3 mwwJune 24, 2011
Fox Islands, Aleutian Islands, Alaska · depth 52 km
M 4.8 mbJune 19, 2011
41 km W of Dutch Harbor, Alaska · depth 109 km
M 4.5 mbJune 18, 2011
33 km NNE of Chickaloon, Alaska · depth 29 km
M 5.1 mwJune 16, 2011
14 km NE of Nikiski, Alaska · depth 59 km
M 4.6 mbJune 5, 2011
Alaska Peninsula · depth 3 km
M 4.8 mbMay 26, 2011
74 km S of Akhiok, Alaska · depth 13 km
M 5.0 mwMay 21, 2011
12 km N of Port Clarence, Alaska · depth 20 km
M 4.8 mbMay 20, 2011
Southern Alaska · depth 137 km
M 4.5 mbMay 13, 2011
48 km WNW of Happy Valley, Alaska · depth 101 km
M 4.5 mbMay 12, 2011
210 km SE of Perryville, Alaska · depth 21 km
M 5.1 mwcMay 9, 2011
57 km SSE of Sand Point, Alaska · depth 21 km
M 5.8 mwwMay 5, 2011
37 km SSW of Sand Point, Alaska · depth 36 km
M 5.7 mwwMay 5, 2011
27 km S of Sand Point, Alaska · depth 39 km
M 5.0 mwApril 25, 2011
47 km SW of Nanwalek, Alaska · depth 57 km
M 4.5 mbApril 17, 2011
Alaska Peninsula · depth 10 km
M 4.6 mwApril 4, 2011
84 km SW of Nanwalek, Alaska · depth 69 km
M 4.6 mbApril 2, 2011
140 km SE of Old Harbor, Alaska · depth 10 km
M 4.9 mbApril 2, 2011
100 km ESE of Chignik, Alaska · depth 24 km
M 4.7 mbMarch 1, 2011
36 km W of Akhiok, Alaska · depth 37 km
M 5.0 mwcFebruary 15, 2011
50 km SW of Nikolski, Alaska · depth 15 km
M 4.8 mwFebruary 10, 2011
76 km WNW of Aleneva, Alaska · depth 78 km
M 4.7 mbFebruary 9, 2011
147 km W of Nikolski, Alaska · depth 106 km
M 4.6 mbFebruary 6, 2011
35 km SSW of Nelson Lagoon, Alaska · depth 43 km
M 4.5 mwFebruary 4, 2011
31 km SE of Point Possession, Alaska · depth 41 km
M 4.7 mbFebruary 2, 2011
54 km S of Sand Point, Alaska · depth 21 km
M 5.9 mwwFebruary 2, 2011
40 km S of Sand Point, Alaska · depth 35 km
M 5.2 mwJanuary 23, 2011
42 km E of Denali National Park, Alaska · depth 16 km
M 4.8 mbJanuary 21, 2011
131 km ESE of Nikolski, Alaska · depth 10 km
M 4.5 mbJanuary 18, 2011
64 km SSE of Kokhanok, Alaska · depth 136 km
M 4.7 mbDecember 31, 2010
126 km S of Unalaska, Alaska · depth 8 km
M 5.0 mwDecember 30, 2010
113 km SE of Ugashik, Alaska · depth 58 km
M 5.0 mwcDecember 19, 2010
154 km S of False Pass, Alaska · depth 26 km
M 4.8 mbDecember 16, 2010
203 km S of Nikolski, Alaska · depth 25 km
M 5.0 mwcDecember 14, 2010
109 km SSW of Nikolski, Alaska · depth 13 km
M 5.3 mwcDecember 14, 2010
92 km SSW of Nikolski, Alaska · depth 31 km
M 4.6 mwDecember 10, 2010
13 km SE of Skagway, Alaska · depth 1 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.