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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 4.7 mbApril 29, 1977
132 km SSE of Cordova, Alaska · depth 8 km
M 4.5 mbApril 24, 1977
63 km SSW of Nikolski, Alaska · depth 59 km
M 4.5 mbApril 20, 1977
41 km NNW of Petersville, Alaska · depth 114 km
M 4.8 mbApril 20, 1977
38 km ESE of Halibut Cove, Alaska · depth 33 km
M 4.9 mbApril 16, 1977
149 km SW of Nikolski, Alaska · depth 15 km
M 4.6 mbApril 2, 1977
254 km S of King Cove, Alaska · depth 33 km
M 4.5 mbMarch 28, 1977
37 km ESE of Egegik, Alaska · depth 61 km
M 4.5 mbMarch 26, 1977
109 km SE of Nikolski, Alaska · depth 29 km
M 4.7 mbMarch 26, 1977
38 km ENE of Nikolski, Alaska · depth 47 km
M 6.0 msMarch 26, 1977
82 km SSE of Nikolski, Alaska · depth 38 km
M 4.6 mbMarch 25, 1977
30 km ENE of Whittier, Alaska · depth 55 km
M 5.1 mbMarch 16, 1977
123 km SE of Chignik, Alaska · depth 18 km
M 4.7 mbMarch 9, 1977
74 km ESE of Nikolski, Alaska · depth 33 km
M 4.8 mbFebruary 25, 1977
72 km S of Port Graham, Alaska · depth 81 km
M 5.0 mbFebruary 21, 1977
44 km WSW of Nelson Lagoon, Alaska · depth 167 km
M 4.7 mbFebruary 20, 1977
Kodiak Island region, Alaska · depth 51 km
M 4.5 mbJanuary 20, 1977
112 km WSW of Pelican, Alaska · depth 36 km
M 5.1 mbJanuary 17, 1977
220 km SE of Sand Point, Alaska · depth 22 km
M 4.5 mlJanuary 13, 1977
142 km W of Yakutat, Alaska · depth 33 km
M 5.1 mbDecember 26, 1976
65 km E of Sand Point, Alaska · depth 40 km
M 4.7 mbNovember 30, 1976
44 km ENE of Pedro Bay, Alaska · depth 127 km
M 4.9 mbNovember 12, 1976
289 km NE of Kaktovik, Alaska · depth 33 km
M 4.9 mbNovember 6, 1976
44 km NE of Pedro Bay, Alaska · depth 119 km
M 4.6 mbOctober 31, 1976
52 km E of Pedro Bay, Alaska · depth 131 km
M 4.9 mbOctober 28, 1976
70 km E of Nikolski, Alaska · depth 50 km
M 4.5 mbOctober 25, 1976
212 km ENE of Saint George, Alaska · depth 33 km
M 4.8 mbOctober 25, 1976
94 km SSE of Akhiok, Alaska · depth 33 km
M 4.9 mbOctober 24, 1976
54 km ENE of Chase, Alaska · depth 75 km
M 5.0 mbOctober 24, 1976
23 km WNW of Aleneva, Alaska · depth 59 km
M 4.6 mbOctober 23, 1976
102 km N of Akutan, Alaska · depth 194 km
M 5.5 mbOctober 22, 1976
105 km SSE of Akhiok, Alaska · depth 26 km
M 4.8 mbOctober 21, 1976
75 km SSW of Nikolski, Alaska · depth 33 km
M 5.4 mbOctober 21, 1976
86 km SSW of Nikolski, Alaska · depth 36 km
M 5.0 mbOctober 20, 1976
100 km SE of Akhiok, Alaska · depth 22 km
M 4.9 mbOctober 18, 1976
56 km ESE of Denali National Park, Alaska · depth 126 km
M 4.9 mbSeptember 21, 1976
17 km ENE of Kodiak, Alaska · depth 33 km
M 4.6 mbSeptember 10, 1976
Fox Islands, Aleutian Islands, Alaska · depth 33 km
M 5.4 mbSeptember 4, 1976
48 km N of Petersville, Alaska · depth 123 km
M 5.5 mbAugust 22, 1976
56 km E of Port Alsworth, Alaska · depth 144 km
M 4.9 mbJuly 20, 1976
120 km SE of Chignik, Alaska · depth 33 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.