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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 5.2 mwcFebruary 4, 1999
96 km S of King Cove, Alaska · depth 33 km
M 6.6 mwcJanuary 28, 1999
18 km WSW of Nikolski, Alaska · depth 67 km
M 6.0 mwcJanuary 16, 1999
Gulf of Alaska · depth 21 km
M 5.2 mwcJanuary 16, 1999
254 km SSW of Nikolski, Alaska · depth 33 km
M 4.5 mbJanuary 15, 1999
116 km SSE of Akhiok, Alaska · depth 10 km
M 4.5 mbJanuary 10, 1999
138 km SSE of Perryville, Alaska · depth 11 km
M 4.8 mbDecember 22, 1998
south of Alaska · depth 10 km
M 4.8 mbDecember 22, 1998
south of Alaska · depth 10 km
M 4.6 mbDecember 16, 1998
39 km SW of Sitka, Alaska · depth 12 km
M 4.6 mbDecember 16, 1998
110 km SSW of Port Alexander, Alaska · depth 10 km
M 4.5 mbDecember 9, 1998
97 km SSE of False Pass, Alaska · depth 26 km
M 4.5 mbDecember 7, 1998
86 km SSW of Nikolski, Alaska · depth 33 km
M 5.8 mwcDecember 5, 1998
98 km SSW of Nikolski, Alaska · depth 33 km
M 5.2 mwcDecember 4, 1998
100 km SSW of Nikolski, Alaska · depth 33 km
M 5.4 mwbDecember 1, 1998
149 km SE of Akutan, Alaska · depth 22 km
M 5.2 mwcNovember 28, 1998
99 km SSE of False Pass, Alaska · depth 12 km
M 4.5 mbNovember 20, 1998
111 km SE of Akutan, Alaska · depth 33 km
M 4.7 mbNovember 15, 1998
58 km SSE of Akhiok, Alaska · depth -3 km
M 4.9 mbNovember 11, 1998
107 km SE of Akutan, Alaska · depth 33 km
M 5.7 mwNovember 8, 1998
101 km SE of Old Harbor, Alaska · depth 10 km
M 4.6 mbNovember 3, 1998
82 km E of Nikolski, Alaska · depth 60 km
M 4.6 mbNovember 1, 1998
87 km SW of False Pass, Alaska · depth 33 km
M 4.7 mbOctober 31, 1998
95 km NW of Yakutat, Alaska · depth 2 km
M 4.8 mbOctober 25, 1998
77 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbOctober 25, 1998
76 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbOctober 25, 1998
82 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbOctober 22, 1998
175 km S of False Pass, Alaska · depth 33 km
M 5.5 mwcOctober 17, 1998
136 km S of False Pass, Alaska · depth 33 km
M 5.4 mwcOctober 17, 1998
143 km S of False Pass, Alaska · depth 33 km
M 4.9 mbSeptember 30, 1998
162 km S of False Pass, Alaska · depth 27 km
M 4.5 mbSeptember 28, 1998
79 km SE of Akutan, Alaska · depth 47 km
M 5.0 mwSeptember 27, 1998
6 km NNW of Knik-Fairview, Alaska · depth 35 km
M 4.5 mbSeptember 24, 1998
106 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 12, 1998
227 km SE of Unalaska, Alaska · depth 33 km
M 4.6 mbSeptember 2, 1998
36 km WNW of Valdez, Alaska · depth 25 km
M 4.5 mbAugust 27, 1998
126 km SSW of False Pass, Alaska · depth 12 km
M 4.9 mlAugust 24, 1998
23 km WSW of Anchor Point, Alaska · depth 67 km
M 4.7 mbAugust 24, 1998
107 km NNW of Nikolski, Alaska · depth 182 km
M 4.6 mbAugust 22, 1998
100 km SE of Nikolski, Alaska · depth 66 km
M 4.5 mbAugust 22, 1998
62 km E of Pedro Bay, Alaska · depth 107 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.