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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 4.8 mbJanuary 12, 1982
37 km SSW of Nanwalek, Alaska · depth 68 km
M 4.9 mbDecember 30, 1981
31 km SSW of South Van Horn, Alaska · depth 24 km
M 4.8 mbDecember 30, 1981
78 km SW of Nikolski, Alaska · depth 45 km
M 4.9 mbDecember 9, 1981
south of Alaska · depth 33 km
M 4.8 mbDecember 7, 1981
Kodiak Island region, Alaska · depth 33 km
M 4.6 mbDecember 6, 1981
19 km N of Chickaloon, Alaska · depth 63 km
M 4.7 mbNovember 18, 1981
120 km SSW of False Pass, Alaska · depth 60 km
M 4.8 mbNovember 17, 1981
21 km WNW of Clam Gulch, Alaska · depth 74 km
M 4.5 mbNovember 16, 1981
65 km ENE of Pedro Bay, Alaska · depth 126 km
M 5.1 mbNovember 14, 1981
81 km E of Akutan, Alaska · depth 66 km
M 4.6 mbNovember 10, 1981
70 km SSW of Nikolski, Alaska · depth 41 km
M 5.5 mbNovember 9, 1981
89 km SE of Unalaska, Alaska · depth 33 km
M 4.7 mbNovember 9, 1981
83 km NNW of Karluk, Alaska · depth 129 km
M 4.9 mbNovember 4, 1981
174 km SW of Nikolski, Alaska · depth 41 km
M 4.5 mbOctober 31, 1981
178 km SE of Akutan, Alaska · depth 33 km
M 4.5 mbOctober 25, 1981
62 km SW of Nikolski, Alaska · depth 51 km
M 4.6 mbOctober 25, 1981
28 km SW of Port Lions, Alaska · depth 64 km
M 4.8 mbOctober 19, 1981
64 km ESE of Red Dog Mine, Alaska · depth 15 km
M 4.5 mlOctober 16, 1981
101 km NW of Yakutat, Alaska · depth 15 km
M 4.5 mbOctober 13, 1981
52 km W of Dutch Harbor, Alaska · depth 111 km
M 4.7 mbOctober 6, 1981
54 km WNW of Cantwell, Alaska · depth 28 km
M 4.6 mbOctober 3, 1981
128 km WSW of Nikolski, Alaska · depth 46 km
M 4.7 mbSeptember 26, 1981
29 km N of Fishhook, Alaska · depth 58 km
M 4.5 mbSeptember 25, 1981
240 km SSE of Nikolski, Alaska · depth 33 km
M 4.8 msSeptember 2, 1981
154 km SSE of King Cove, Alaska · depth 33 km
M 5.1 mbAugust 28, 1981
63 km SSW of Nikolski, Alaska · depth 39 km
M 5.1 mbAugust 28, 1981
21 km N of Susitna, Alaska · depth 71 km
M 5.1 mbAugust 15, 1981
101 km E of Chignik, Alaska · depth 53 km
M 4.5 mbAugust 9, 1981
163 km SW of Nikolski, Alaska · depth 38 km
M 5.2 mbAugust 1, 1981
63 km E of Port Alsworth, Alaska · depth 114 km
M 4.6 mbJuly 26, 1981
9 km WNW of Point Possession, Alaska · depth 72 km
M 4.5 mbJuly 25, 1981
77 km NE of Ouzinkie, Alaska · depth 33 km
M 4.5 mbJuly 21, 1981
21 km WSW of Nanwalek, Alaska · depth 84 km
M 4.5 mbJuly 16, 1981
76 km ESE of Red Dog Mine, Alaska · depth 33 km
M 4.7 mbJuly 14, 1981
80 km SSW of Nikolski, Alaska · depth 28 km
M 4.9 mbJuly 13, 1981
66 km ESE of Red Dog Mine, Alaska · depth 12 km
M 5.2 mbJuly 12, 1981
Fox Islands, Aleutian Islands, Alaska · depth 39 km
M 4.8 mbJuly 12, 1981
northern Alaska · depth 33 km
M 5.2 mbJuly 12, 1981
76 km E of Noatak, Alaska · depth 33 km
M 5.0 mbJuly 11, 1981
130 km WSW of Nikolski, Alaska · depth 52 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.