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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 mbJuly 7, 1981
69 km ESE of Red Dog Mine, Alaska · depth 33 km
M 4.7 mbJuly 6, 1981
97 km E of Red Dog Mine, Alaska · depth 33 km
M 4.9 msJuly 4, 1981
58 km ENE of Noatak, Alaska · depth 33 km
M 4.5 mbJune 28, 1981
77 km NNW of Yakutat, Alaska · depth 15 km
M 4.5 mbJune 27, 1981
143 km S of False Pass, Alaska · depth 31 km
M 4.7 mbJune 25, 1981
72 km SE of Pedro Bay, Alaska · depth 111 km
M 4.8 mbJune 25, 1981
58 km SE of Sand Point, Alaska · depth 33 km
M 4.9 mbJune 22, 1981
121 km ESE of Nikolski, Alaska · depth 43 km
M 4.6 mbJune 18, 1981
54 km SE of Old Harbor, Alaska · depth 33 km
M 5.0 mbJune 13, 1981
136 km S of False Pass, Alaska · depth 23 km
M 5.0 mbJune 7, 1981
53 km SE of Akutan, Alaska · depth 33 km
M 5.5 mbJune 5, 1981
198 km SSE of Unalaska, Alaska · depth 33 km
M 4.6 mbMay 21, 1981
61 km W of Anchor Point, Alaska · depth 117 km
M 4.7 mbApril 27, 1981
72 km SSE of Nikolski, AK · depth 33 km
M 4.5 mbApril 23, 1981
50 km S of Cantwell, Alaska · depth 81 km
M 4.6 mbApril 17, 1981
70 km NNW of Karluk, Alaska · depth 91 km
M 4.6 mbApril 14, 1981
Fox Islands, Aleutian Islands, Alaska · depth 38 km
M 4.5 mlApril 10, 1981
4 km N of Stevens Village, Alaska · depth 33 km
M 4.8 mbApril 4, 1981
128 km S of False Pass, Alaska · depth 16 km
M 4.5 mbApril 2, 1981
37 km S of Northway, Alaska · depth 33 km
M 5.5 mbMarch 24, 1981
62 km ESE of Nikolski, Alaska · depth 33 km
M 4.5 mbMarch 24, 1981
92 km SE of Nikolski, Alaska · depth 33 km
M 5.0 mbMarch 21, 1981
52 km S of Kokhanok, Alaska · depth 136 km
M 4.8 mbMarch 15, 1981
35 km NW of Sand Point, AK · depth 41 km
M 4.9 mbMarch 5, 1981
73 km SSE of Old Harbor, Alaska · depth 33 km
M 4.6 mbFebruary 23, 1981
183 km WSW of Nikolski, Alaska · depth 33 km
M 4.8 mbFebruary 17, 1981
62 km SE of Denali National Park, Alaska · depth 123 km
M 5.1 mbFebruary 15, 1981
233 km SE of Atka, Alaska · depth 33 km
M 4.5 mbFebruary 12, 1981
62 km WSW of Akhiok, Alaska · depth 45 km
M 4.8 mbFebruary 4, 1981
208 km SE of Akutan, Alaska · depth 33 km
M 4.8 mbJanuary 31, 1981
42 km SSW of Nanwalek, Alaska · depth 62 km
M 4.6 mbJanuary 29, 1981
120 km SE of Akutan, Alaska · depth 33 km
M 4.7 mbJanuary 20, 1981
87 km WNW of Karluk, Alaska · depth 84 km
M 4.5 mbJanuary 19, 1981
43 km SE of Denali National Park, Alaska · depth 124 km
M 4.7 mbJanuary 19, 1981
181 km SE of Perryville, Alaska · depth 33 km
M 4.8 mbJanuary 18, 1981
39 km ESE of Sand Point, Alaska · depth 47 km
M 4.8 mbJanuary 14, 1981
104 km SSW of Nikolski, Alaska · depth 21 km
M 4.5 mbJanuary 14, 1981
13 km WNW of Nikolski, Alaska · depth 33 km
M 5.0 mbJanuary 12, 1981
117 km S of Unalaska, Alaska · depth 15 km
M 4.5 mbJanuary 12, 1981
101 km S of Sand Point, Alaska · depth 20 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.