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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 mbJanuary 14, 1990
132 km ESE of Chignik, Alaska · depth 33 km
M 4.5 mbJanuary 12, 1990
73 km SSW of Nikolski, Alaska · depth 33 km
M 4.5 mbJanuary 12, 1990
29 km SE of Minto, Alaska · depth 19 km
M 4.8 mbJanuary 12, 1990
60 km W of Nikolski, Alaska · depth 33 km
M 4.6 mbJanuary 11, 1990
87 km SSE of Old Harbor, Alaska · depth 33 km
M 4.6 mbJanuary 11, 1990
south of Alaska · depth 33 km
M 5.5 mwJanuary 10, 1990
94 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbJanuary 9, 1990
106 km WNW of Nikolski, Alaska · depth 33 km
M 5.8 mwJanuary 9, 1990
114 km SSW of Nikolski, Alaska · depth 33 km
M 4.9 mbJanuary 8, 1990
98 km SSW of Nikolski, Alaska · depth 33 km
M 5.0 mbJanuary 8, 1990
104 km SSW of Nikolski, Alaska · depth 33 km
M 6.0 mwJanuary 8, 1990
107 km SSW of Nikolski, Alaska · depth 33 km
M 4.9 mbJanuary 7, 1990
22 km NNE of Four Mile Road, Alaska · depth 20 km
M 4.9 mbJanuary 7, 1990
16 km SE of Minto, Alaska · depth 20 km
M 5.4 mbDecember 21, 1989
57 km S of McGrath, Alaska · depth -0 km
M 4.7 mbDecember 21, 1989
39 km NNE of Cold Bay, Alaska · depth 150 km
M 4.6 mbDecember 20, 1989
154 km SE of Akutan, Alaska · depth 16 km
M 4.8 mbDecember 7, 1989
Fox Islands, Aleutian Islands, Alaska · depth 33 km
M 4.8 mbDecember 6, 1989
51 km SW of Cantwell, Alaska · depth 102 km
M 4.6 mbDecember 1, 1989
172 km WSW of Yakutat, Alaska · depth 10 km
M 4.5 mbNovember 28, 1989
244 km SW of Yakutat, Alaska · depth 10 km
M 4.6 mbNovember 14, 1989
46 km ESE of Nikolski, Alaska · depth 33 km
M 4.7 mbNovember 13, 1989
28 km WSW of Aleneva, Alaska · depth 56 km
M 4.5 mbNovember 10, 1989
155 km SW of Nikolski, Alaska · depth 33 km
M 4.7 mbNovember 7, 1989
123 km SSW of Unalaska, Alaska · depth 33 km
M 4.5 mbOctober 25, 1989
44 km SW of Nikolski, Alaska · depth 33 km
M 4.9 mbOctober 22, 1989
133 km WSW of Nikolski, Alaska · depth 33 km
M 4.9 mbOctober 20, 1989
165 km SW of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 18, 1989
123 km SE of Old Harbor, Alaska · depth 0 km
M 4.8 mbOctober 13, 1989
110 km SSE of False Pass, Alaska · depth 33 km
M 5.0 mbOctober 9, 1989
23 km NE of Kobuk, Alaska · depth 10 km
M 4.8 mbOctober 2, 1989
46 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbSeptember 30, 1989
43 km W of Aleneva, Alaska · depth 67 km
M 4.5 mbSeptember 24, 1989
50 km NNE of Aleneva, Alaska · depth 47 km
M 4.7 mbSeptember 22, 1989
31 km WNW of False Pass, Alaska · depth 170 km
M 4.7 mbSeptember 17, 1989
141 km S of False Pass, Alaska · depth 33 km
M 4.9 mbSeptember 16, 1989
176 km SE of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 11, 1989
160 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 5, 1989
167 km S of False Pass, Alaska · depth 33 km
M 7.0 mwSeptember 4, 1989
164 km SE of Chignik, 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.